./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/weaver/chl-poker-hand-symm.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 6f8a234fc2a7dd634bd03f872a0d7e8707283ecf0f996c6ed729f53ab07d6660 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 08:20:30,706 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 08:20:30,768 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-12 08:20:30,773 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 08:20:30,773 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 08:20:30,809 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 08:20:30,810 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 08:20:30,810 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 08:20:30,811 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 08:20:30,812 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 08:20:30,812 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 08:20:30,813 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 08:20:30,813 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 08:20:30,816 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 08:20:30,816 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 08:20:30,817 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 08:20:30,817 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 08:20:30,817 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 08:20:30,817 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 08:20:30,818 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 08:20:30,818 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 08:20:30,819 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 08:20:30,822 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 08:20:30,823 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 08:20:30,823 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 08:20:30,823 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 08:20:30,823 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 08:20:30,823 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 08:20:30,824 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 08:20:30,824 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 08:20:30,824 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 08:20:30,824 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 08:20:30,825 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 08:20:30,825 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 08:20:30,826 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 08:20:30,827 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 08:20:30,827 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 08:20:30,828 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 08:20:30,828 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 08:20:30,828 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 08:20:30,829 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 08:20:30,829 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 08:20:30,830 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6f8a234fc2a7dd634bd03f872a0d7e8707283ecf0f996c6ed729f53ab07d6660 [2024-11-12 08:20:31,093 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 08:20:31,118 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 08:20:31,123 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 08:20:31,124 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 08:20:31,124 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 08:20:31,126 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c [2024-11-12 08:20:32,632 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 08:20:32,865 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 08:20:32,865 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c [2024-11-12 08:20:32,879 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e9dbc3fc/dfd3f9a44a2d4edeacbbdd603c103e67/FLAGa07d5d775 [2024-11-12 08:20:32,898 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e9dbc3fc/dfd3f9a44a2d4edeacbbdd603c103e67 [2024-11-12 08:20:32,901 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 08:20:32,903 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 08:20:32,904 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 08:20:32,904 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 08:20:32,912 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 08:20:32,912 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:20:32" (1/1) ... [2024-11-12 08:20:32,913 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1edf19ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:20:32, skipping insertion in model container [2024-11-12 08:20:32,914 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:20:32" (1/1) ... [2024-11-12 08:20:32,948 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 08:20:33,274 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c[12847,12860] [2024-11-12 08:20:33,286 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 08:20:33,305 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 08:20:33,382 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c[12847,12860] [2024-11-12 08:20:33,390 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 08:20:33,414 INFO L204 MainTranslator]: Completed translation [2024-11-12 08:20:33,415 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:20:33 WrapperNode [2024-11-12 08:20:33,415 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 08:20:33,416 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 08:20:33,417 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 08:20:33,417 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 08:20:33,424 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:20:33" (1/1) ... [2024-11-12 08:20:33,456 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:20:33" (1/1) ... [2024-11-12 08:20:33,556 INFO L138 Inliner]: procedures = 24, calls = 297, calls flagged for inlining = 69, calls inlined = 97, statements flattened = 1559 [2024-11-12 08:20:33,557 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 08:20:33,558 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 08:20:33,558 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 08:20:33,558 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 08:20:33,569 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:20:33" (1/1) ... [2024-11-12 08:20:33,570 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:20:33" (1/1) ... [2024-11-12 08:20:33,591 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:20:33" (1/1) ... [2024-11-12 08:20:33,647 INFO L175 MemorySlicer]: Split 186 memory accesses to 2 slices as follows [2, 184]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 8 writes are split as follows [0, 8]. [2024-11-12 08:20:33,650 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:20:33" (1/1) ... [2024-11-12 08:20:33,650 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:20:33" (1/1) ... [2024-11-12 08:20:33,697 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:20:33" (1/1) ... [2024-11-12 08:20:33,715 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:20:33" (1/1) ... [2024-11-12 08:20:33,719 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:20:33" (1/1) ... [2024-11-12 08:20:33,727 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:20:33" (1/1) ... [2024-11-12 08:20:33,742 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 08:20:33,746 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 08:20:33,746 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 08:20:33,747 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 08:20:33,748 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:20:33" (1/1) ... [2024-11-12 08:20:33,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 08:20:33,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:20:33,793 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) [2024-11-12 08:20:33,797 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 [2024-11-12 08:20:33,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 08:20:33,846 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-12 08:20:33,847 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-12 08:20:33,847 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-12 08:20:33,848 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-12 08:20:33,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 08:20:33,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-12 08:20:33,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-12 08:20:33,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-12 08:20:33,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-12 08:20:33,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-12 08:20:33,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-12 08:20:33,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 08:20:33,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 08:20:33,851 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-12 08:20:33,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-12 08:20:33,855 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 08:20:34,066 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 08:20:34,069 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 08:20:35,885 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 08:20:35,886 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 08:20:37,564 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 08:20:37,565 INFO L316 CfgBuilder]: Removed 12 assume(true) statements. [2024-11-12 08:20:37,565 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:20:37 BoogieIcfgContainer [2024-11-12 08:20:37,566 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 08:20:37,569 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 08:20:37,570 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 08:20:37,573 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 08:20:37,573 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 08:20:32" (1/3) ... [2024-11-12 08:20:37,574 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c6d04d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:20:37, skipping insertion in model container [2024-11-12 08:20:37,574 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:20:33" (2/3) ... [2024-11-12 08:20:37,574 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c6d04d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:20:37, skipping insertion in model container [2024-11-12 08:20:37,574 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:20:37" (3/3) ... [2024-11-12 08:20:37,578 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-poker-hand-symm.wvr.c [2024-11-12 08:20:37,597 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 08:20:37,598 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-12 08:20:37,598 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 08:20:37,902 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-12 08:20:37,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 94 transitions, 202 flow [2024-11-12 08:20:38,010 INFO L124 PetriNetUnfolderBase]: 28/92 cut-off events. [2024-11-12 08:20:38,010 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-12 08:20:38,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 92 events. 28/92 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 242 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 71. Up to 7 conditions per place. [2024-11-12 08:20:38,017 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 94 transitions, 202 flow [2024-11-12 08:20:38,021 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 91 transitions, 194 flow [2024-11-12 08:20:38,033 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 08:20:38,042 INFO L333 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, 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;@72299ecf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 08:20:38,042 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-12 08:20:38,089 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 08:20:38,089 INFO L124 PetriNetUnfolderBase]: 28/90 cut-off events. [2024-11-12 08:20:38,089 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-12 08:20:38,090 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:20:38,090 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:20:38,091 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:20:38,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:20:38,097 INFO L85 PathProgramCache]: Analyzing trace with hash -901911410, now seen corresponding path program 1 times [2024-11-12 08:20:38,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:20:38,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692879167] [2024-11-12 08:20:38,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:20:38,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:20:38,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:20:38,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:20:38,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:20:38,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692879167] [2024-11-12 08:20:38,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692879167] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:20:38,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:20:38,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 08:20:38,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629388873] [2024-11-12 08:20:38,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:20:38,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 08:20:38,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:20:38,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 08:20:38,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 08:20:38,835 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-12 08:20:38,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 91 transitions, 194 flow. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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) [2024-11-12 08:20:38,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:20:38,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-12 08:20:38,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:20:40,288 INFO L124 PetriNetUnfolderBase]: 2502/3740 cut-off events. [2024-11-12 08:20:40,289 INFO L125 PetriNetUnfolderBase]: For 87/87 co-relation queries the response was YES. [2024-11-12 08:20:40,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7558 conditions, 3740 events. 2502/3740 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 17699 event pairs, 1702 based on Foata normal form. 0/2940 useless extension candidates. Maximal degree in co-relation 7372. Up to 3738 conditions per place. [2024-11-12 08:20:40,324 INFO L140 encePairwiseOnDemand]: 85/94 looper letters, 84 selfloop transitions, 4 changer transitions 0/89 dead transitions. [2024-11-12 08:20:40,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 89 transitions, 366 flow [2024-11-12 08:20:40,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 08:20:40,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 08:20:40,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2024-11-12 08:20:40,343 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36524822695035464 [2024-11-12 08:20:40,345 INFO L175 Difference]: Start difference. First operand has 70 places, 91 transitions, 194 flow. Second operand 3 states and 103 transitions. [2024-11-12 08:20:40,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 89 transitions, 366 flow [2024-11-12 08:20:40,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 89 transitions, 358 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-12 08:20:40,358 INFO L231 Difference]: Finished difference. Result has 69 places, 89 transitions, 200 flow [2024-11-12 08:20:40,361 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=200, PETRI_PLACES=69, PETRI_TRANSITIONS=89} [2024-11-12 08:20:40,365 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, -1 predicate places. [2024-11-12 08:20:40,367 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 89 transitions, 200 flow [2024-11-12 08:20:40,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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) [2024-11-12 08:20:40,368 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:20:40,369 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:20:40,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 08:20:40,370 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:20:40,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:20:40,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1016506388, now seen corresponding path program 1 times [2024-11-12 08:20:40,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:20:40,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103479693] [2024-11-12 08:20:40,372 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:20:40,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:20:40,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:20:40,633 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 08:20:40,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:20:40,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103479693] [2024-11-12 08:20:40,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103479693] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:20:40,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:20:40,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 08:20:40,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743659039] [2024-11-12 08:20:40,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:20:40,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 08:20:40,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:20:40,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 08:20:40,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 08:20:40,638 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-12 08:20:40,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 89 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2024-11-12 08:20:40,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:20:40,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-12 08:20:40,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:20:41,714 INFO L124 PetriNetUnfolderBase]: 2502/3742 cut-off events. [2024-11-12 08:20:41,715 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-11-12 08:20:41,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7521 conditions, 3742 events. 2502/3742 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 17721 event pairs, 1702 based on Foata normal form. 0/2944 useless extension candidates. Maximal degree in co-relation 7472. Up to 3738 conditions per place. [2024-11-12 08:20:41,735 INFO L140 encePairwiseOnDemand]: 85/94 looper letters, 82 selfloop transitions, 8 changer transitions 0/91 dead transitions. [2024-11-12 08:20:41,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 91 transitions, 384 flow [2024-11-12 08:20:41,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 08:20:41,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 08:20:41,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2024-11-12 08:20:41,738 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35815602836879434 [2024-11-12 08:20:41,738 INFO L175 Difference]: Start difference. First operand has 69 places, 89 transitions, 200 flow. Second operand 3 states and 101 transitions. [2024-11-12 08:20:41,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 91 transitions, 384 flow [2024-11-12 08:20:41,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 91 transitions, 380 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 08:20:41,742 INFO L231 Difference]: Finished difference. Result has 71 places, 91 transitions, 230 flow [2024-11-12 08:20:41,743 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=230, PETRI_PLACES=71, PETRI_TRANSITIONS=91} [2024-11-12 08:20:41,744 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 1 predicate places. [2024-11-12 08:20:41,745 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 91 transitions, 230 flow [2024-11-12 08:20:41,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2024-11-12 08:20:41,745 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:20:41,746 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:20:41,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 08:20:41,747 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:20:41,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:20:41,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1952730255, now seen corresponding path program 1 times [2024-11-12 08:20:41,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:20:41,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995956604] [2024-11-12 08:20:41,749 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:20:41,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:20:41,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:20:41,983 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 08:20:41,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:20:41,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995956604] [2024-11-12 08:20:41,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995956604] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:20:41,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716229861] [2024-11-12 08:20:41,985 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:20:41,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:20:41,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:20:41,988 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:20:41,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 08:20:42,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:20:42,430 INFO L256 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-12 08:20:42,437 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:20:42,494 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 08:20:42,494 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:20:42,533 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 08:20:42,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716229861] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:20:42,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:20:42,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2024-11-12 08:20:42,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014702156] [2024-11-12 08:20:42,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:20:42,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-12 08:20:42,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:20:42,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-12 08:20:42,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2024-11-12 08:20:42,538 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-12 08:20:42,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 91 transitions, 230 flow. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 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) [2024-11-12 08:20:42,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:20:42,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-12 08:20:42,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:20:43,699 INFO L124 PetriNetUnfolderBase]: 2502/3762 cut-off events. [2024-11-12 08:20:43,700 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2024-11-12 08:20:43,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7587 conditions, 3762 events. 2502/3762 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 17721 event pairs, 1702 based on Foata normal form. 8/2973 useless extension candidates. Maximal degree in co-relation 7481. Up to 3738 conditions per place. [2024-11-12 08:20:43,719 INFO L140 encePairwiseOnDemand]: 77/94 looper letters, 78 selfloop transitions, 32 changer transitions 0/111 dead transitions. [2024-11-12 08:20:43,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 111 transitions, 514 flow [2024-11-12 08:20:43,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-12 08:20:43,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-12 08:20:43,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-11-12 08:20:43,724 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2047872340425532 [2024-11-12 08:20:43,725 INFO L175 Difference]: Start difference. First operand has 71 places, 91 transitions, 230 flow. Second operand 8 states and 154 transitions. [2024-11-12 08:20:43,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 111 transitions, 514 flow [2024-11-12 08:20:43,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 111 transitions, 506 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 08:20:43,731 INFO L231 Difference]: Finished difference. Result has 80 places, 111 transitions, 408 flow [2024-11-12 08:20:43,732 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=408, PETRI_PLACES=80, PETRI_TRANSITIONS=111} [2024-11-12 08:20:43,732 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 10 predicate places. [2024-11-12 08:20:43,733 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 111 transitions, 408 flow [2024-11-12 08:20:43,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 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) [2024-11-12 08:20:43,734 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:20:43,734 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:20:43,752 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-12 08:20:43,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:20:43,939 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:20:43,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:20:43,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1433088952, now seen corresponding path program 1 times [2024-11-12 08:20:43,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:20:43,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898891197] [2024-11-12 08:20:43,940 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:20:43,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:20:44,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:20:44,243 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-12 08:20:44,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:20:44,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898891197] [2024-11-12 08:20:44,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898891197] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:20:44,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398116280] [2024-11-12 08:20:44,244 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:20:44,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:20:44,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:20:44,247 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:20:44,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-12 08:20:44,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:20:44,710 INFO L256 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-12 08:20:44,714 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:20:44,804 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-12 08:20:44,804 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:20:44,863 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-12 08:20:44,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398116280] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:20:44,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:20:44,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-12 08:20:44,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528048187] [2024-11-12 08:20:44,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:20:44,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-12 08:20:44,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:20:44,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-12 08:20:44,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2024-11-12 08:20:44,869 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-12 08:20:44,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 111 transitions, 408 flow. Second operand has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 13 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:20:44,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:20:44,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-12 08:20:44,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:20:46,099 INFO L124 PetriNetUnfolderBase]: 2502/3774 cut-off events. [2024-11-12 08:20:46,100 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-11-12 08:20:46,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7687 conditions, 3774 events. 2502/3774 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 17720 event pairs, 1702 based on Foata normal form. 11/2992 useless extension candidates. Maximal degree in co-relation 7495. Up to 3738 conditions per place. [2024-11-12 08:20:46,136 INFO L140 encePairwiseOnDemand]: 77/94 looper letters, 78 selfloop transitions, 44 changer transitions 0/123 dead transitions. [2024-11-12 08:20:46,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 123 transitions, 708 flow [2024-11-12 08:20:46,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-12 08:20:46,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-12 08:20:46,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 167 transitions. [2024-11-12 08:20:46,140 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.16150870406189555 [2024-11-12 08:20:46,141 INFO L175 Difference]: Start difference. First operand has 80 places, 111 transitions, 408 flow. Second operand 11 states and 167 transitions. [2024-11-12 08:20:46,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 123 transitions, 708 flow [2024-11-12 08:20:46,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 123 transitions, 654 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-11-12 08:20:46,149 INFO L231 Difference]: Finished difference. Result has 88 places, 123 transitions, 524 flow [2024-11-12 08:20:46,150 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=524, PETRI_PLACES=88, PETRI_TRANSITIONS=123} [2024-11-12 08:20:46,152 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 18 predicate places. [2024-11-12 08:20:46,152 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 123 transitions, 524 flow [2024-11-12 08:20:46,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 13 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:20:46,153 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:20:46,153 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:20:46,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-12 08:20:46,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-12 08:20:46,355 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:20:46,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:20:46,356 INFO L85 PathProgramCache]: Analyzing trace with hash 719978097, now seen corresponding path program 2 times [2024-11-12 08:20:46,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:20:46,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264906884] [2024-11-12 08:20:46,356 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:20:46,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:20:46,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:20:46,846 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-12 08:20:46,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:20:46,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264906884] [2024-11-12 08:20:46,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264906884] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:20:46,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61677188] [2024-11-12 08:20:46,847 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 08:20:46,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:20:46,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:20:46,851 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:20:46,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-12 08:20:47,254 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-12 08:20:47,255 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:20:47,260 INFO L256 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-12 08:20:47,265 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:20:47,334 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 08:20:47,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 23 [2024-11-12 08:20:47,381 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-12 08:20:47,384 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 08:20:47,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61677188] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:20:47,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 08:20:47,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-11-12 08:20:47,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301946363] [2024-11-12 08:20:47,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:20:47,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 08:20:47,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:20:47,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 08:20:47,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-11-12 08:20:47,388 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-12 08:20:47,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 123 transitions, 524 flow. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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) [2024-11-12 08:20:47,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:20:47,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-12 08:20:47,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:20:49,104 INFO L124 PetriNetUnfolderBase]: 3916/5918 cut-off events. [2024-11-12 08:20:49,104 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-12 08:20:49,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12015 conditions, 5918 events. 3916/5918 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 30625 event pairs, 1413 based on Foata normal form. 1/4715 useless extension candidates. Maximal degree in co-relation 11775. Up to 3014 conditions per place. [2024-11-12 08:20:49,135 INFO L140 encePairwiseOnDemand]: 73/94 looper letters, 197 selfloop transitions, 22 changer transitions 9/229 dead transitions. [2024-11-12 08:20:49,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 229 transitions, 1198 flow [2024-11-12 08:20:49,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 08:20:49,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 08:20:49,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 209 transitions. [2024-11-12 08:20:49,138 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44468085106382976 [2024-11-12 08:20:49,138 INFO L175 Difference]: Start difference. First operand has 88 places, 123 transitions, 524 flow. Second operand 5 states and 209 transitions. [2024-11-12 08:20:49,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 229 transitions, 1198 flow [2024-11-12 08:20:49,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 229 transitions, 1122 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-11-12 08:20:49,149 INFO L231 Difference]: Finished difference. Result has 91 places, 141 transitions, 591 flow [2024-11-12 08:20:49,150 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=591, PETRI_PLACES=91, PETRI_TRANSITIONS=141} [2024-11-12 08:20:49,151 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 21 predicate places. [2024-11-12 08:20:49,151 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 141 transitions, 591 flow [2024-11-12 08:20:49,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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) [2024-11-12 08:20:49,151 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:20:49,151 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:20:49,168 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-12 08:20:49,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:20:49,352 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:20:49,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:20:49,353 INFO L85 PathProgramCache]: Analyzing trace with hash -489758041, now seen corresponding path program 3 times [2024-11-12 08:20:49,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:20:49,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086540603] [2024-11-12 08:20:49,354 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:20:49,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:20:49,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:20:49,742 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-12 08:20:49,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:20:49,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086540603] [2024-11-12 08:20:49,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086540603] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:20:49,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236948307] [2024-11-12 08:20:49,743 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 08:20:49,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:20:49,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:20:49,746 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:20:49,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-12 08:20:50,129 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-12 08:20:50,129 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:20:50,135 INFO L256 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-12 08:20:50,138 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:20:50,168 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 08:20:50,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 23 [2024-11-12 08:20:50,201 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-12 08:20:50,205 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 08:20:50,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236948307] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:20:50,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 08:20:50,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-11-12 08:20:50,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740794170] [2024-11-12 08:20:50,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:20:50,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 08:20:50,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:20:50,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 08:20:50,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-11-12 08:20:50,208 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-12 08:20:50,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 141 transitions, 591 flow. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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) [2024-11-12 08:20:50,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:20:50,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-12 08:20:50,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:20:52,054 INFO L124 PetriNetUnfolderBase]: 4031/6134 cut-off events. [2024-11-12 08:20:52,055 INFO L125 PetriNetUnfolderBase]: For 884/884 co-relation queries the response was YES. [2024-11-12 08:20:52,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14752 conditions, 6134 events. 4031/6134 cut-off events. For 884/884 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 32437 event pairs, 1419 based on Foata normal form. 1/4899 useless extension candidates. Maximal degree in co-relation 14718. Up to 3289 conditions per place. [2024-11-12 08:20:52,088 INFO L140 encePairwiseOnDemand]: 73/94 looper letters, 195 selfloop transitions, 22 changer transitions 9/227 dead transitions. [2024-11-12 08:20:52,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 227 transitions, 1242 flow [2024-11-12 08:20:52,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 08:20:52,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 08:20:52,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 207 transitions. [2024-11-12 08:20:52,091 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44042553191489364 [2024-11-12 08:20:52,091 INFO L175 Difference]: Start difference. First operand has 91 places, 141 transitions, 591 flow. Second operand 5 states and 207 transitions. [2024-11-12 08:20:52,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 227 transitions, 1242 flow [2024-11-12 08:20:52,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 227 transitions, 1234 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-12 08:20:52,107 INFO L231 Difference]: Finished difference. Result has 96 places, 141 transitions, 641 flow [2024-11-12 08:20:52,108 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=585, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=641, PETRI_PLACES=96, PETRI_TRANSITIONS=141} [2024-11-12 08:20:52,109 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 26 predicate places. [2024-11-12 08:20:52,110 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 141 transitions, 641 flow [2024-11-12 08:20:52,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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) [2024-11-12 08:20:52,111 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:20:52,111 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:20:52,134 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-12 08:20:52,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:20:52,312 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:20:52,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:20:52,313 INFO L85 PathProgramCache]: Analyzing trace with hash 2113688169, now seen corresponding path program 1 times [2024-11-12 08:20:52,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:20:52,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046543680] [2024-11-12 08:20:52,314 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:20:52,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:20:52,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:20:52,766 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-12 08:20:52,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:20:52,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046543680] [2024-11-12 08:20:52,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046543680] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:20:52,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158221297] [2024-11-12 08:20:52,767 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:20:52,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:20:52,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:20:52,770 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:20:52,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-12 08:20:53,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:20:53,212 INFO L256 TraceCheckSpWp]: Trace formula consists of 690 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-12 08:20:53,216 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:20:53,316 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-12 08:20:53,316 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:20:53,455 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-12 08:20:53,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158221297] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:20:53,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:20:53,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2024-11-12 08:20:53,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844175876] [2024-11-12 08:20:53,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:20:53,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-12 08:20:53,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:20:53,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-12 08:20:53,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=205, Unknown=0, NotChecked=0, Total=380 [2024-11-12 08:20:53,459 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-12 08:20:53,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 141 transitions, 641 flow. Second operand has 20 states, 20 states have (on average 5.8) internal successors, (116), 20 states have internal predecessors, (116), 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) [2024-11-12 08:20:53,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:20:53,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-12 08:20:53,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:20:54,947 INFO L124 PetriNetUnfolderBase]: 4018/6124 cut-off events. [2024-11-12 08:20:54,947 INFO L125 PetriNetUnfolderBase]: For 2584/2584 co-relation queries the response was YES. [2024-11-12 08:20:54,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15661 conditions, 6124 events. 4018/6124 cut-off events. For 2584/2584 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 31911 event pairs, 2847 based on Foata normal form. 14/4902 useless extension candidates. Maximal degree in co-relation 15624. Up to 6072 conditions per place. [2024-11-12 08:20:54,980 INFO L140 encePairwiseOnDemand]: 77/94 looper letters, 96 selfloop transitions, 58 changer transitions 0/155 dead transitions. [2024-11-12 08:20:54,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 155 transitions, 1061 flow [2024-11-12 08:20:54,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-12 08:20:54,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-12 08:20:54,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 192 transitions. [2024-11-12 08:20:54,983 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.1458966565349544 [2024-11-12 08:20:54,984 INFO L175 Difference]: Start difference. First operand has 96 places, 141 transitions, 641 flow. Second operand 14 states and 192 transitions. [2024-11-12 08:20:54,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 155 transitions, 1061 flow [2024-11-12 08:20:54,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 155 transitions, 1036 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-12 08:20:54,999 INFO L231 Difference]: Finished difference. Result has 113 places, 155 transitions, 942 flow [2024-11-12 08:20:55,000 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=942, PETRI_PLACES=113, PETRI_TRANSITIONS=155} [2024-11-12 08:20:55,000 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 43 predicate places. [2024-11-12 08:20:55,001 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 155 transitions, 942 flow [2024-11-12 08:20:55,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.8) internal successors, (116), 20 states have internal predecessors, (116), 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) [2024-11-12 08:20:55,001 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:20:55,001 INFO L206 CegarLoopForPetriNet]: trace histogram [12, 12, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:20:55,020 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-12 08:20:55,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:20:55,203 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:20:55,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:20:55,203 INFO L85 PathProgramCache]: Analyzing trace with hash 642830997, now seen corresponding path program 2 times [2024-11-12 08:20:55,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:20:55,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628401276] [2024-11-12 08:20:55,204 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:20:55,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:20:55,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:20:55,799 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-11-12 08:20:55,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:20:55,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628401276] [2024-11-12 08:20:55,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628401276] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:20:55,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029978551] [2024-11-12 08:20:55,800 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 08:20:55,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:20:55,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:20:55,803 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:20:55,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-12 08:20:56,190 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-12 08:20:56,190 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:20:56,192 INFO L256 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-12 08:20:56,197 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:20:56,415 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-12 08:20:56,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 9 [2024-11-12 08:20:56,438 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2024-11-12 08:20:56,439 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 08:20:56,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029978551] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:20:56,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 08:20:56,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15] total 19 [2024-11-12 08:20:56,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846467199] [2024-11-12 08:20:56,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:20:56,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 08:20:56,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:20:56,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 08:20:56,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=225, Unknown=0, NotChecked=0, Total=342 [2024-11-12 08:20:56,442 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-12 08:20:56,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 155 transitions, 942 flow. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 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) [2024-11-12 08:20:56,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:20:56,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-12 08:20:56,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:20:58,402 INFO L124 PetriNetUnfolderBase]: 4949/7803 cut-off events. [2024-11-12 08:20:58,403 INFO L125 PetriNetUnfolderBase]: For 1677/1677 co-relation queries the response was YES. [2024-11-12 08:20:58,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19341 conditions, 7803 events. 4949/7803 cut-off events. For 1677/1677 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 45898 event pairs, 919 based on Foata normal form. 64/6387 useless extension candidates. Maximal degree in co-relation 19005. Up to 2348 conditions per place. [2024-11-12 08:20:58,446 INFO L140 encePairwiseOnDemand]: 71/94 looper letters, 288 selfloop transitions, 65 changer transitions 11/365 dead transitions. [2024-11-12 08:20:58,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 365 transitions, 2247 flow [2024-11-12 08:20:58,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-12 08:20:58,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-12 08:20:58,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 322 transitions. [2024-11-12 08:20:58,448 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42819148936170215 [2024-11-12 08:20:58,448 INFO L175 Difference]: Start difference. First operand has 113 places, 155 transitions, 942 flow. Second operand 8 states and 322 transitions. [2024-11-12 08:20:58,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 365 transitions, 2247 flow [2024-11-12 08:20:58,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 365 transitions, 2175 flow, removed 32 selfloop flow, removed 2 redundant places. [2024-11-12 08:20:58,467 INFO L231 Difference]: Finished difference. Result has 122 places, 199 transitions, 1298 flow [2024-11-12 08:20:58,468 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=863, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1298, PETRI_PLACES=122, PETRI_TRANSITIONS=199} [2024-11-12 08:20:58,470 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 52 predicate places. [2024-11-12 08:20:58,470 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 199 transitions, 1298 flow [2024-11-12 08:20:58,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 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) [2024-11-12 08:20:58,471 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:20:58,471 INFO L206 CegarLoopForPetriNet]: trace histogram [12, 12, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:20:58,492 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-12 08:20:58,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:20:58,672 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:20:58,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:20:58,673 INFO L85 PathProgramCache]: Analyzing trace with hash 499129417, now seen corresponding path program 3 times [2024-11-12 08:20:58,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:20:58,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75001792] [2024-11-12 08:20:58,673 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:20:58,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:20:58,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:20:59,241 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-11-12 08:20:59,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:20:59,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75001792] [2024-11-12 08:20:59,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75001792] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:20:59,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588181575] [2024-11-12 08:20:59,243 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 08:20:59,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:20:59,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:20:59,245 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:20:59,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-12 08:20:59,726 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-12 08:20:59,726 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:20:59,730 INFO L256 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-12 08:20:59,737 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:20:59,801 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2024-11-12 08:20:59,802 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 08:20:59,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588181575] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:20:59,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 08:20:59,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [15] total 16 [2024-11-12 08:20:59,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637892381] [2024-11-12 08:20:59,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:20:59,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 08:20:59,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:20:59,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 08:20:59,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2024-11-12 08:20:59,807 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-12 08:20:59,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 199 transitions, 1298 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2024-11-12 08:20:59,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:20:59,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-12 08:20:59,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:01,805 INFO L124 PetriNetUnfolderBase]: 4849/7650 cut-off events. [2024-11-12 08:21:01,805 INFO L125 PetriNetUnfolderBase]: For 4720/4720 co-relation queries the response was YES. [2024-11-12 08:21:01,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21841 conditions, 7650 events. 4849/7650 cut-off events. For 4720/4720 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 44105 event pairs, 3416 based on Foata normal form. 45/6225 useless extension candidates. Maximal degree in co-relation 21517. Up to 7229 conditions per place. [2024-11-12 08:21:01,852 INFO L140 encePairwiseOnDemand]: 82/94 looper letters, 205 selfloop transitions, 1 changer transitions 31/238 dead transitions. [2024-11-12 08:21:01,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 238 transitions, 1850 flow [2024-11-12 08:21:01,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 08:21:01,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 08:21:01,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 149 transitions. [2024-11-12 08:21:01,854 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5283687943262412 [2024-11-12 08:21:01,854 INFO L175 Difference]: Start difference. First operand has 122 places, 199 transitions, 1298 flow. Second operand 3 states and 149 transitions. [2024-11-12 08:21:01,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 238 transitions, 1850 flow [2024-11-12 08:21:01,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 238 transitions, 1850 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-12 08:21:01,879 INFO L231 Difference]: Finished difference. Result has 125 places, 191 transitions, 1257 flow [2024-11-12 08:21:01,880 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1267, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1257, PETRI_PLACES=125, PETRI_TRANSITIONS=191} [2024-11-12 08:21:01,880 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 55 predicate places. [2024-11-12 08:21:01,881 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 191 transitions, 1257 flow [2024-11-12 08:21:01,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2024-11-12 08:21:01,881 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:01,881 INFO L206 CegarLoopForPetriNet]: trace histogram [12, 12, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:01,900 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-12 08:21:02,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:21:02,083 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:21:02,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:02,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1456462089, now seen corresponding path program 1 times [2024-11-12 08:21:02,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:02,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792971945] [2024-11-12 08:21:02,084 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:02,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:02,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:02,687 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-11-12 08:21:02,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:02,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792971945] [2024-11-12 08:21:02,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792971945] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:21:02,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136869485] [2024-11-12 08:21:02,688 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:02,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:21:02,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:21:02,690 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:21:02,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-12 08:21:03,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:03,193 INFO L256 TraceCheckSpWp]: Trace formula consists of 829 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-12 08:21:03,196 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:21:03,450 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-11-12 08:21:03,450 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:21:03,845 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-11-12 08:21:03,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136869485] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:21:03,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:21:03,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 41 [2024-11-12 08:21:03,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508659234] [2024-11-12 08:21:03,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:21:03,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-12 08:21:03,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:03,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-12 08:21:03,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=586, Invalid=1054, Unknown=0, NotChecked=0, Total=1640 [2024-11-12 08:21:03,849 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-12 08:21:03,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 191 transitions, 1257 flow. Second operand has 41 states, 41 states have (on average 4.878048780487805) internal successors, (200), 41 states have internal predecessors, (200), 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) [2024-11-12 08:21:03,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:03,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-12 08:21:03,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:05,457 INFO L124 PetriNetUnfolderBase]: 4550/7149 cut-off events. [2024-11-12 08:21:05,457 INFO L125 PetriNetUnfolderBase]: For 4824/4824 co-relation queries the response was YES. [2024-11-12 08:21:05,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20630 conditions, 7149 events. 4550/7149 cut-off events. For 4824/4824 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 40324 event pairs, 3355 based on Foata normal form. 2/5829 useless extension candidates. Maximal degree in co-relation 20425. Up to 7093 conditions per place. [2024-11-12 08:21:05,506 INFO L140 encePairwiseOnDemand]: 77/94 looper letters, 132 selfloop transitions, 60 changer transitions 0/193 dead transitions. [2024-11-12 08:21:05,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 193 transitions, 1661 flow [2024-11-12 08:21:05,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-12 08:21:05,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-12 08:21:05,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 198 transitions. [2024-11-12 08:21:05,509 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.10531914893617021 [2024-11-12 08:21:05,509 INFO L175 Difference]: Start difference. First operand has 125 places, 191 transitions, 1257 flow. Second operand 20 states and 198 transitions. [2024-11-12 08:21:05,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 193 transitions, 1661 flow [2024-11-12 08:21:05,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 193 transitions, 1647 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-11-12 08:21:05,554 INFO L231 Difference]: Finished difference. Result has 140 places, 193 transitions, 1393 flow [2024-11-12 08:21:05,555 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1243, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1393, PETRI_PLACES=140, PETRI_TRANSITIONS=193} [2024-11-12 08:21:05,556 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 70 predicate places. [2024-11-12 08:21:05,557 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 193 transitions, 1393 flow [2024-11-12 08:21:05,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 4.878048780487805) internal successors, (200), 41 states have internal predecessors, (200), 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) [2024-11-12 08:21:05,557 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:05,557 INFO L206 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:05,578 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-12 08:21:05,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-12 08:21:05,758 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:21:05,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:05,759 INFO L85 PathProgramCache]: Analyzing trace with hash -239019205, now seen corresponding path program 2 times [2024-11-12 08:21:05,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:05,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281371886] [2024-11-12 08:21:05,759 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:05,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:05,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:06,658 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-12 08:21:06,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:06,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281371886] [2024-11-12 08:21:06,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281371886] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:21:06,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:21:06,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 08:21:06,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449734644] [2024-11-12 08:21:06,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:21:06,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 08:21:06,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:06,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 08:21:06,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 08:21:06,661 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-12 08:21:06,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 193 transitions, 1393 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2024-11-12 08:21:06,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:06,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-12 08:21:06,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:08,313 INFO L124 PetriNetUnfolderBase]: 4716/7503 cut-off events. [2024-11-12 08:21:08,313 INFO L125 PetriNetUnfolderBase]: For 4401/4401 co-relation queries the response was YES. [2024-11-12 08:21:08,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21226 conditions, 7503 events. 4716/7503 cut-off events. For 4401/4401 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 44018 event pairs, 2005 based on Foata normal form. 63/6185 useless extension candidates. Maximal degree in co-relation 20841. Up to 4093 conditions per place. [2024-11-12 08:21:08,337 INFO L140 encePairwiseOnDemand]: 81/94 looper letters, 222 selfloop transitions, 34 changer transitions 3/260 dead transitions. [2024-11-12 08:21:08,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 260 transitions, 2187 flow [2024-11-12 08:21:08,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 08:21:08,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 08:21:08,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 149 transitions. [2024-11-12 08:21:08,339 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5283687943262412 [2024-11-12 08:21:08,339 INFO L175 Difference]: Start difference. First operand has 140 places, 193 transitions, 1393 flow. Second operand 3 states and 149 transitions. [2024-11-12 08:21:08,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 260 transitions, 2187 flow [2024-11-12 08:21:08,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 260 transitions, 2035 flow, removed 18 selfloop flow, removed 14 redundant places. [2024-11-12 08:21:08,366 INFO L231 Difference]: Finished difference. Result has 130 places, 211 transitions, 1547 flow [2024-11-12 08:21:08,366 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1241, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1547, PETRI_PLACES=130, PETRI_TRANSITIONS=211} [2024-11-12 08:21:08,367 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 60 predicate places. [2024-11-12 08:21:08,367 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 211 transitions, 1547 flow [2024-11-12 08:21:08,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2024-11-12 08:21:08,368 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:08,368 INFO L206 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:08,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-12 08:21:08,368 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:21:08,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:08,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1002001847, now seen corresponding path program 1 times [2024-11-12 08:21:08,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:08,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991712336] [2024-11-12 08:21:08,369 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:08,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:08,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:08,692 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-12 08:21:08,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:08,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991712336] [2024-11-12 08:21:08,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991712336] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:21:08,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:21:08,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 08:21:08,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122280533] [2024-11-12 08:21:08,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:21:08,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 08:21:08,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:08,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 08:21:08,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 08:21:08,697 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-12 08:21:08,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 211 transitions, 1547 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2024-11-12 08:21:08,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:08,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-12 08:21:08,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:10,175 INFO L124 PetriNetUnfolderBase]: 4456/7087 cut-off events. [2024-11-12 08:21:10,175 INFO L125 PetriNetUnfolderBase]: For 7922/7922 co-relation queries the response was YES. [2024-11-12 08:21:10,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21278 conditions, 7087 events. 4456/7087 cut-off events. For 7922/7922 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 40726 event pairs, 2964 based on Foata normal form. 78/5829 useless extension candidates. Maximal degree in co-relation 20952. Up to 5958 conditions per place. [2024-11-12 08:21:10,204 INFO L140 encePairwiseOnDemand]: 91/94 looper letters, 234 selfloop transitions, 4 changer transitions 1/240 dead transitions. [2024-11-12 08:21:10,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 240 transitions, 2074 flow [2024-11-12 08:21:10,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 08:21:10,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 08:21:10,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 135 transitions. [2024-11-12 08:21:10,206 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4787234042553192 [2024-11-12 08:21:10,206 INFO L175 Difference]: Start difference. First operand has 130 places, 211 transitions, 1547 flow. Second operand 3 states and 135 transitions. [2024-11-12 08:21:10,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 240 transitions, 2074 flow [2024-11-12 08:21:10,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 240 transitions, 2026 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-11-12 08:21:10,242 INFO L231 Difference]: Finished difference. Result has 132 places, 204 transitions, 1456 flow [2024-11-12 08:21:10,243 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1442, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1456, PETRI_PLACES=132, PETRI_TRANSITIONS=204} [2024-11-12 08:21:10,244 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 62 predicate places. [2024-11-12 08:21:10,245 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 204 transitions, 1456 flow [2024-11-12 08:21:10,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2024-11-12 08:21:10,245 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:10,245 INFO L206 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:10,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-12 08:21:10,246 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:21:10,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:10,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1737112089, now seen corresponding path program 1 times [2024-11-12 08:21:10,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:10,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580984096] [2024-11-12 08:21:10,247 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:10,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:10,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:10,560 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-12 08:21:10,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:10,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580984096] [2024-11-12 08:21:10,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580984096] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:21:10,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:21:10,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 08:21:10,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383143731] [2024-11-12 08:21:10,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:21:10,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 08:21:10,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:10,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 08:21:10,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 08:21:10,562 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-12 08:21:10,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 204 transitions, 1456 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2024-11-12 08:21:10,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:10,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-12 08:21:10,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:12,214 INFO L124 PetriNetUnfolderBase]: 4498/7196 cut-off events. [2024-11-12 08:21:12,214 INFO L125 PetriNetUnfolderBase]: For 6049/6049 co-relation queries the response was YES. [2024-11-12 08:21:12,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21516 conditions, 7196 events. 4498/7196 cut-off events. For 6049/6049 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 41226 event pairs, 2936 based on Foata normal form. 73/5911 useless extension candidates. Maximal degree in co-relation 21188. Up to 5962 conditions per place. [2024-11-12 08:21:12,243 INFO L140 encePairwiseOnDemand]: 91/94 looper letters, 229 selfloop transitions, 5 changer transitions 1/236 dead transitions. [2024-11-12 08:21:12,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 236 transitions, 2008 flow [2024-11-12 08:21:12,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 08:21:12,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 08:21:12,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 132 transitions. [2024-11-12 08:21:12,245 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46808510638297873 [2024-11-12 08:21:12,245 INFO L175 Difference]: Start difference. First operand has 132 places, 204 transitions, 1456 flow. Second operand 3 states and 132 transitions. [2024-11-12 08:21:12,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 236 transitions, 2008 flow [2024-11-12 08:21:12,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 236 transitions, 1994 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-12 08:21:12,273 INFO L231 Difference]: Finished difference. Result has 133 places, 201 transitions, 1437 flow [2024-11-12 08:21:12,273 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1410, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1437, PETRI_PLACES=133, PETRI_TRANSITIONS=201} [2024-11-12 08:21:12,274 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 63 predicate places. [2024-11-12 08:21:12,274 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 201 transitions, 1437 flow [2024-11-12 08:21:12,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2024-11-12 08:21:12,274 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:12,274 INFO L206 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:12,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-12 08:21:12,275 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:21:12,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:12,276 INFO L85 PathProgramCache]: Analyzing trace with hash -101330679, now seen corresponding path program 1 times [2024-11-12 08:21:12,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:12,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398105660] [2024-11-12 08:21:12,276 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:12,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:12,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:13,016 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-12 08:21:13,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:13,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398105660] [2024-11-12 08:21:13,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398105660] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:21:13,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:21:13,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 08:21:13,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721191442] [2024-11-12 08:21:13,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:21:13,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 08:21:13,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:13,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 08:21:13,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 08:21:13,019 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-12 08:21:13,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 201 transitions, 1437 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2024-11-12 08:21:13,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:13,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-12 08:21:13,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:15,195 INFO L124 PetriNetUnfolderBase]: 4675/7557 cut-off events. [2024-11-12 08:21:15,196 INFO L125 PetriNetUnfolderBase]: For 6614/6614 co-relation queries the response was YES. [2024-11-12 08:21:15,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22597 conditions, 7557 events. 4675/7557 cut-off events. For 6614/6614 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 44795 event pairs, 3512 based on Foata normal form. 6/6160 useless extension candidates. Maximal degree in co-relation 22268. Up to 7114 conditions per place. [2024-11-12 08:21:15,239 INFO L140 encePairwiseOnDemand]: 90/94 looper letters, 225 selfloop transitions, 6 changer transitions 10/242 dead transitions. [2024-11-12 08:21:15,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 242 transitions, 2066 flow [2024-11-12 08:21:15,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 08:21:15,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 08:21:15,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 138 transitions. [2024-11-12 08:21:15,240 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3670212765957447 [2024-11-12 08:21:15,241 INFO L175 Difference]: Start difference. First operand has 133 places, 201 transitions, 1437 flow. Second operand 4 states and 138 transitions. [2024-11-12 08:21:15,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 242 transitions, 2066 flow [2024-11-12 08:21:15,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 242 transitions, 2052 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-11-12 08:21:15,271 INFO L231 Difference]: Finished difference. Result has 137 places, 201 transitions, 1452 flow [2024-11-12 08:21:15,271 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1428, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1452, PETRI_PLACES=137, PETRI_TRANSITIONS=201} [2024-11-12 08:21:15,272 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 67 predicate places. [2024-11-12 08:21:15,272 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 201 transitions, 1452 flow [2024-11-12 08:21:15,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2024-11-12 08:21:15,272 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:15,272 INFO L206 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:15,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-12 08:21:15,273 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:21:15,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:15,274 INFO L85 PathProgramCache]: Analyzing trace with hash -310640127, now seen corresponding path program 2 times [2024-11-12 08:21:15,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:15,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082564770] [2024-11-12 08:21:15,274 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:15,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:15,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:15,990 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-12 08:21:15,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:15,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082564770] [2024-11-12 08:21:15,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082564770] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:21:15,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:21:15,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 08:21:15,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511459687] [2024-11-12 08:21:15,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:21:15,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 08:21:15,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:15,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 08:21:15,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 08:21:15,992 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-12 08:21:15,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 201 transitions, 1452 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2024-11-12 08:21:15,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:15,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-12 08:21:15,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:17,824 INFO L124 PetriNetUnfolderBase]: 4829/7866 cut-off events. [2024-11-12 08:21:17,824 INFO L125 PetriNetUnfolderBase]: For 6981/6981 co-relation queries the response was YES. [2024-11-12 08:21:17,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23209 conditions, 7866 events. 4829/7866 cut-off events. For 6981/6981 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 47838 event pairs, 1633 based on Foata normal form. 1/6428 useless extension candidates. Maximal degree in co-relation 23115. Up to 5092 conditions per place. [2024-11-12 08:21:17,869 INFO L140 encePairwiseOnDemand]: 77/94 looper letters, 238 selfloop transitions, 38 changer transitions 10/287 dead transitions. [2024-11-12 08:21:17,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 287 transitions, 2282 flow [2024-11-12 08:21:17,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 08:21:17,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 08:21:17,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 197 transitions. [2024-11-12 08:21:17,871 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41914893617021276 [2024-11-12 08:21:17,871 INFO L175 Difference]: Start difference. First operand has 137 places, 201 transitions, 1452 flow. Second operand 5 states and 197 transitions. [2024-11-12 08:21:17,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 287 transitions, 2282 flow [2024-11-12 08:21:17,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 287 transitions, 2271 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-12 08:21:17,898 INFO L231 Difference]: Finished difference. Result has 140 places, 201 transitions, 1532 flow [2024-11-12 08:21:17,898 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1444, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1532, PETRI_PLACES=140, PETRI_TRANSITIONS=201} [2024-11-12 08:21:17,899 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 70 predicate places. [2024-11-12 08:21:17,899 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 201 transitions, 1532 flow [2024-11-12 08:21:17,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2024-11-12 08:21:17,899 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:17,899 INFO L206 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:17,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-12 08:21:17,900 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:21:17,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:17,900 INFO L85 PathProgramCache]: Analyzing trace with hash -825460671, now seen corresponding path program 1 times [2024-11-12 08:21:17,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:17,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880846488] [2024-11-12 08:21:17,901 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:17,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:17,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:18,446 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-12 08:21:18,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:18,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880846488] [2024-11-12 08:21:18,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880846488] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:21:18,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:21:18,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 08:21:18,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117227161] [2024-11-12 08:21:18,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:21:18,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 08:21:18,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:18,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 08:21:18,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 08:21:18,452 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-12 08:21:18,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 201 transitions, 1532 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2024-11-12 08:21:18,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:18,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-12 08:21:18,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:20,185 INFO L124 PetriNetUnfolderBase]: 4782/7779 cut-off events. [2024-11-12 08:21:20,185 INFO L125 PetriNetUnfolderBase]: For 9118/9118 co-relation queries the response was YES. [2024-11-12 08:21:20,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23601 conditions, 7779 events. 4782/7779 cut-off events. For 9118/9118 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 47501 event pairs, 1400 based on Foata normal form. 13/6357 useless extension candidates. Maximal degree in co-relation 23495. Up to 6790 conditions per place. [2024-11-12 08:21:20,223 INFO L140 encePairwiseOnDemand]: 79/94 looper letters, 211 selfloop transitions, 14 changer transitions 2/228 dead transitions. [2024-11-12 08:21:20,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 228 transitions, 2031 flow [2024-11-12 08:21:20,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 08:21:20,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 08:21:20,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 134 transitions. [2024-11-12 08:21:20,224 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.475177304964539 [2024-11-12 08:21:20,224 INFO L175 Difference]: Start difference. First operand has 140 places, 201 transitions, 1532 flow. Second operand 3 states and 134 transitions. [2024-11-12 08:21:20,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 228 transitions, 2031 flow [2024-11-12 08:21:20,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 228 transitions, 1989 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-12 08:21:20,254 INFO L231 Difference]: Finished difference. Result has 138 places, 199 transitions, 1504 flow [2024-11-12 08:21:20,254 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1478, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1504, PETRI_PLACES=138, PETRI_TRANSITIONS=199} [2024-11-12 08:21:20,255 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 68 predicate places. [2024-11-12 08:21:20,255 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 199 transitions, 1504 flow [2024-11-12 08:21:20,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2024-11-12 08:21:20,255 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:20,255 INFO L206 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:20,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-12 08:21:20,255 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:21:20,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:20,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1436507131, now seen corresponding path program 1 times [2024-11-12 08:21:20,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:20,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316109118] [2024-11-12 08:21:20,256 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:20,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:20,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:21,298 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-12 08:21:21,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:21,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316109118] [2024-11-12 08:21:21,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316109118] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:21:21,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:21:21,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 08:21:21,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410729469] [2024-11-12 08:21:21,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:21:21,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 08:21:21,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:21,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 08:21:21,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 08:21:21,300 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-12 08:21:21,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 199 transitions, 1504 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2024-11-12 08:21:21,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:21,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-12 08:21:21,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:23,040 INFO L124 PetriNetUnfolderBase]: 4820/7997 cut-off events. [2024-11-12 08:21:23,040 INFO L125 PetriNetUnfolderBase]: For 8240/8240 co-relation queries the response was YES. [2024-11-12 08:21:23,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24006 conditions, 7997 events. 4820/7997 cut-off events. For 8240/8240 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 50243 event pairs, 2367 based on Foata normal form. 100/6695 useless extension candidates. Maximal degree in co-relation 23672. Up to 4019 conditions per place. [2024-11-12 08:21:23,087 INFO L140 encePairwiseOnDemand]: 84/94 looper letters, 213 selfloop transitions, 26 changer transitions 7/247 dead transitions. [2024-11-12 08:21:23,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 247 transitions, 2148 flow [2024-11-12 08:21:23,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 08:21:23,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 08:21:23,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 143 transitions. [2024-11-12 08:21:23,088 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5070921985815603 [2024-11-12 08:21:23,089 INFO L175 Difference]: Start difference. First operand has 138 places, 199 transitions, 1504 flow. Second operand 3 states and 143 transitions. [2024-11-12 08:21:23,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 247 transitions, 2148 flow [2024-11-12 08:21:23,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 247 transitions, 2120 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 08:21:23,120 INFO L231 Difference]: Finished difference. Result has 139 places, 201 transitions, 1609 flow [2024-11-12 08:21:23,120 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1434, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1609, PETRI_PLACES=139, PETRI_TRANSITIONS=201} [2024-11-12 08:21:23,121 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 69 predicate places. [2024-11-12 08:21:23,121 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 201 transitions, 1609 flow [2024-11-12 08:21:23,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2024-11-12 08:21:23,121 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:23,121 INFO L206 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:23,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-12 08:21:23,122 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:21:23,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:23,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1883375367, now seen corresponding path program 2 times [2024-11-12 08:21:23,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:23,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074686883] [2024-11-12 08:21:23,123 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:23,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:23,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:24,105 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-12 08:21:24,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:24,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074686883] [2024-11-12 08:21:24,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074686883] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:21:24,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:21:24,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 08:21:24,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573824759] [2024-11-12 08:21:24,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:21:24,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 08:21:24,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:24,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 08:21:24,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 08:21:24,108 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-12 08:21:24,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 201 transitions, 1609 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2024-11-12 08:21:24,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:24,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-12 08:21:24,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:25,754 INFO L124 PetriNetUnfolderBase]: 4656/7709 cut-off events. [2024-11-12 08:21:25,754 INFO L125 PetriNetUnfolderBase]: For 9533/9533 co-relation queries the response was YES. [2024-11-12 08:21:25,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23530 conditions, 7709 events. 4656/7709 cut-off events. For 9533/9533 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 47692 event pairs, 3361 based on Foata normal form. 54/6379 useless extension candidates. Maximal degree in co-relation 23197. Up to 6591 conditions per place. [2024-11-12 08:21:25,808 INFO L140 encePairwiseOnDemand]: 84/94 looper letters, 210 selfloop transitions, 12 changer transitions 8/231 dead transitions. [2024-11-12 08:21:25,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 231 transitions, 2033 flow [2024-11-12 08:21:25,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 08:21:25,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 08:21:25,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 143 transitions. [2024-11-12 08:21:25,810 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5070921985815603 [2024-11-12 08:21:25,810 INFO L175 Difference]: Start difference. First operand has 139 places, 201 transitions, 1609 flow. Second operand 3 states and 143 transitions. [2024-11-12 08:21:25,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 231 transitions, 2033 flow [2024-11-12 08:21:25,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 231 transitions, 2017 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 08:21:25,846 INFO L231 Difference]: Finished difference. Result has 140 places, 187 transitions, 1461 flow [2024-11-12 08:21:25,846 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1437, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1461, PETRI_PLACES=140, PETRI_TRANSITIONS=187} [2024-11-12 08:21:25,846 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 70 predicate places. [2024-11-12 08:21:25,846 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 187 transitions, 1461 flow [2024-11-12 08:21:25,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2024-11-12 08:21:25,847 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:25,847 INFO L206 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:25,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-12 08:21:25,847 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:21:25,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:25,848 INFO L85 PathProgramCache]: Analyzing trace with hash -526379136, now seen corresponding path program 1 times [2024-11-12 08:21:25,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:25,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294803787] [2024-11-12 08:21:25,848 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:25,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:25,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:26,807 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-12 08:21:26,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:26,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294803787] [2024-11-12 08:21:26,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294803787] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:21:26,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:21:26,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 08:21:26,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544815778] [2024-11-12 08:21:26,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:21:26,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 08:21:26,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:26,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 08:21:26,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 08:21:26,812 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-12 08:21:26,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 187 transitions, 1461 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2024-11-12 08:21:26,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:26,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-12 08:21:26,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:28,417 INFO L124 PetriNetUnfolderBase]: 4937/8300 cut-off events. [2024-11-12 08:21:28,417 INFO L125 PetriNetUnfolderBase]: For 8724/8724 co-relation queries the response was YES. [2024-11-12 08:21:28,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25034 conditions, 8300 events. 4937/8300 cut-off events. For 8724/8724 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 53496 event pairs, 3631 based on Foata normal form. 27/6867 useless extension candidates. Maximal degree in co-relation 24701. Up to 6985 conditions per place. [2024-11-12 08:21:28,460 INFO L140 encePairwiseOnDemand]: 84/94 looper letters, 213 selfloop transitions, 16 changer transitions 13/243 dead transitions. [2024-11-12 08:21:28,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 243 transitions, 2121 flow [2024-11-12 08:21:28,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 08:21:28,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 08:21:28,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 151 transitions. [2024-11-12 08:21:28,462 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5354609929078015 [2024-11-12 08:21:28,462 INFO L175 Difference]: Start difference. First operand has 140 places, 187 transitions, 1461 flow. Second operand 3 states and 151 transitions. [2024-11-12 08:21:28,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 243 transitions, 2121 flow [2024-11-12 08:21:28,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 243 transitions, 2109 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 08:21:28,494 INFO L231 Difference]: Finished difference. Result has 143 places, 185 transitions, 1497 flow [2024-11-12 08:21:28,495 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1433, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1497, PETRI_PLACES=143, PETRI_TRANSITIONS=185} [2024-11-12 08:21:28,495 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 73 predicate places. [2024-11-12 08:21:28,495 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 185 transitions, 1497 flow [2024-11-12 08:21:28,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2024-11-12 08:21:28,495 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:28,495 INFO L206 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:28,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-12 08:21:28,496 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:21:28,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:28,496 INFO L85 PathProgramCache]: Analyzing trace with hash 609915800, now seen corresponding path program 2 times [2024-11-12 08:21:28,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:28,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147401642] [2024-11-12 08:21:28,496 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:28,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:28,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:29,419 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-12 08:21:29,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:29,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147401642] [2024-11-12 08:21:29,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147401642] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:21:29,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:21:29,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 08:21:29,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346050771] [2024-11-12 08:21:29,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:21:29,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 08:21:29,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:29,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 08:21:29,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 08:21:29,421 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-12 08:21:29,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 185 transitions, 1497 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2024-11-12 08:21:29,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:29,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-12 08:21:29,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:30,953 INFO L124 PetriNetUnfolderBase]: 4629/7767 cut-off events. [2024-11-12 08:21:30,954 INFO L125 PetriNetUnfolderBase]: For 9230/9230 co-relation queries the response was YES. [2024-11-12 08:21:30,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23493 conditions, 7767 events. 4629/7767 cut-off events. For 9230/9230 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 49448 event pairs, 2173 based on Foata normal form. 59/6424 useless extension candidates. Maximal degree in co-relation 23159. Up to 4129 conditions per place. [2024-11-12 08:21:31,006 INFO L140 encePairwiseOnDemand]: 84/94 looper letters, 201 selfloop transitions, 15 changer transitions 8/225 dead transitions. [2024-11-12 08:21:31,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 225 transitions, 1998 flow [2024-11-12 08:21:31,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 08:21:31,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 08:21:31,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 143 transitions. [2024-11-12 08:21:31,008 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5070921985815603 [2024-11-12 08:21:31,008 INFO L175 Difference]: Start difference. First operand has 143 places, 185 transitions, 1497 flow. Second operand 3 states and 143 transitions. [2024-11-12 08:21:31,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 225 transitions, 1998 flow [2024-11-12 08:21:31,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 225 transitions, 1980 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-12 08:21:31,047 INFO L231 Difference]: Finished difference. Result has 142 places, 178 transitions, 1401 flow [2024-11-12 08:21:31,047 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1389, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1401, PETRI_PLACES=142, PETRI_TRANSITIONS=178} [2024-11-12 08:21:31,048 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 72 predicate places. [2024-11-12 08:21:31,048 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 178 transitions, 1401 flow [2024-11-12 08:21:31,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2024-11-12 08:21:31,048 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:31,048 INFO L206 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:31,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-12 08:21:31,048 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:21:31,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:31,049 INFO L85 PathProgramCache]: Analyzing trace with hash 495274041, now seen corresponding path program 1 times [2024-11-12 08:21:31,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:31,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640572072] [2024-11-12 08:21:31,050 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:31,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:31,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:31,197 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-12 08:21:31,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:31,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640572072] [2024-11-12 08:21:31,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640572072] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:21:31,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:21:31,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 08:21:31,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885312826] [2024-11-12 08:21:31,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:21:31,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 08:21:31,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:31,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 08:21:31,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 08:21:31,199 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-12 08:21:31,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 178 transitions, 1401 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) [2024-11-12 08:21:31,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:31,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-12 08:21:31,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:32,625 INFO L124 PetriNetUnfolderBase]: 4468/7504 cut-off events. [2024-11-12 08:21:32,626 INFO L125 PetriNetUnfolderBase]: For 8008/8008 co-relation queries the response was YES. [2024-11-12 08:21:32,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22587 conditions, 7504 events. 4468/7504 cut-off events. For 8008/8008 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 47294 event pairs, 2547 based on Foata normal form. 41/6173 useless extension candidates. Maximal degree in co-relation 22255. Up to 4515 conditions per place. [2024-11-12 08:21:32,661 INFO L140 encePairwiseOnDemand]: 88/94 looper letters, 197 selfloop transitions, 7 changer transitions 16/221 dead transitions. [2024-11-12 08:21:32,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 221 transitions, 1934 flow [2024-11-12 08:21:32,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 08:21:32,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 08:21:32,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 138 transitions. [2024-11-12 08:21:32,663 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2024-11-12 08:21:32,663 INFO L175 Difference]: Start difference. First operand has 142 places, 178 transitions, 1401 flow. Second operand 3 states and 138 transitions. [2024-11-12 08:21:32,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 221 transitions, 1934 flow [2024-11-12 08:21:32,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 221 transitions, 1906 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-11-12 08:21:32,690 INFO L231 Difference]: Finished difference. Result has 142 places, 175 transitions, 1346 flow [2024-11-12 08:21:32,691 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1317, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1346, PETRI_PLACES=142, PETRI_TRANSITIONS=175} [2024-11-12 08:21:32,691 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 72 predicate places. [2024-11-12 08:21:32,691 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 175 transitions, 1346 flow [2024-11-12 08:21:32,691 INFO L472 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) [2024-11-12 08:21:32,691 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:32,692 INFO L206 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:32,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-12 08:21:32,692 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:21:32,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:32,692 INFO L85 PathProgramCache]: Analyzing trace with hash 455528441, now seen corresponding path program 2 times [2024-11-12 08:21:32,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:32,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980874633] [2024-11-12 08:21:32,693 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:32,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:32,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:32,840 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-12 08:21:32,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:32,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980874633] [2024-11-12 08:21:32,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980874633] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:21:32,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:21:32,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 08:21:32,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977032822] [2024-11-12 08:21:32,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:21:32,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 08:21:32,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:32,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 08:21:32,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 08:21:32,842 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-12 08:21:32,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 175 transitions, 1346 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) [2024-11-12 08:21:32,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:32,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-12 08:21:32,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:34,468 INFO L124 PetriNetUnfolderBase]: 4419/7410 cut-off events. [2024-11-12 08:21:34,468 INFO L125 PetriNetUnfolderBase]: For 6203/6203 co-relation queries the response was YES. [2024-11-12 08:21:34,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22505 conditions, 7410 events. 4419/7410 cut-off events. For 6203/6203 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 46189 event pairs, 3676 based on Foata normal form. 4/6050 useless extension candidates. Maximal degree in co-relation 22172. Up to 7043 conditions per place. [2024-11-12 08:21:34,498 INFO L140 encePairwiseOnDemand]: 91/94 looper letters, 186 selfloop transitions, 4 changer transitions 13/204 dead transitions. [2024-11-12 08:21:34,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 204 transitions, 1834 flow [2024-11-12 08:21:34,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 08:21:34,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 08:21:34,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2024-11-12 08:21:34,499 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.425531914893617 [2024-11-12 08:21:34,499 INFO L175 Difference]: Start difference. First operand has 142 places, 175 transitions, 1346 flow. Second operand 3 states and 120 transitions. [2024-11-12 08:21:34,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 204 transitions, 1834 flow [2024-11-12 08:21:34,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 204 transitions, 1828 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 08:21:34,519 INFO L231 Difference]: Finished difference. Result has 143 places, 173 transitions, 1322 flow [2024-11-12 08:21:34,519 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1331, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1322, PETRI_PLACES=143, PETRI_TRANSITIONS=173} [2024-11-12 08:21:34,520 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 73 predicate places. [2024-11-12 08:21:34,520 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 173 transitions, 1322 flow [2024-11-12 08:21:34,520 INFO L472 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) [2024-11-12 08:21:34,520 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:34,520 INFO L206 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:34,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-12 08:21:34,520 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:21:34,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:34,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1624082221, now seen corresponding path program 1 times [2024-11-12 08:21:34,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:34,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089890226] [2024-11-12 08:21:34,521 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:34,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:34,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:35,267 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-12 08:21:35,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:35,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089890226] [2024-11-12 08:21:35,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089890226] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:21:35,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:21:35,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 08:21:35,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762970127] [2024-11-12 08:21:35,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:21:35,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 08:21:35,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:35,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 08:21:35,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 08:21:35,269 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-12 08:21:35,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 173 transitions, 1322 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) [2024-11-12 08:21:35,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:35,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-12 08:21:35,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:36,213 INFO L124 PetriNetUnfolderBase]: 3204/5377 cut-off events. [2024-11-12 08:21:36,213 INFO L125 PetriNetUnfolderBase]: For 5449/5449 co-relation queries the response was YES. [2024-11-12 08:21:36,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15318 conditions, 5377 events. 3204/5377 cut-off events. For 5449/5449 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 31728 event pairs, 1984 based on Foata normal form. 205/4453 useless extension candidates. Maximal degree in co-relation 15284. Up to 3432 conditions per place. [2024-11-12 08:21:36,236 INFO L140 encePairwiseOnDemand]: 82/94 looper letters, 156 selfloop transitions, 2 changer transitions 24/183 dead transitions. [2024-11-12 08:21:36,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 183 transitions, 1442 flow [2024-11-12 08:21:36,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 08:21:36,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 08:21:36,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 131 transitions. [2024-11-12 08:21:36,237 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4645390070921986 [2024-11-12 08:21:36,237 INFO L175 Difference]: Start difference. First operand has 143 places, 173 transitions, 1322 flow. Second operand 3 states and 131 transitions. [2024-11-12 08:21:36,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 183 transitions, 1442 flow [2024-11-12 08:21:36,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 183 transitions, 1375 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-11-12 08:21:36,255 INFO L231 Difference]: Finished difference. Result has 135 places, 147 transitions, 940 flow [2024-11-12 08:21:36,255 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=944, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=940, PETRI_PLACES=135, PETRI_TRANSITIONS=147} [2024-11-12 08:21:36,255 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 65 predicate places. [2024-11-12 08:21:36,255 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 147 transitions, 940 flow [2024-11-12 08:21:36,256 INFO L472 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) [2024-11-12 08:21:36,256 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:36,256 INFO L206 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:36,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-12 08:21:36,256 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:21:36,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:36,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1279691771, now seen corresponding path program 1 times [2024-11-12 08:21:36,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:36,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423362057] [2024-11-12 08:21:36,257 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:36,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:36,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:36,617 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-12 08:21:36,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:36,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423362057] [2024-11-12 08:21:36,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423362057] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:21:36,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:21:36,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 08:21:36,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742011696] [2024-11-12 08:21:36,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:21:36,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 08:21:36,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:36,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 08:21:36,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-12 08:21:36,620 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-12 08:21:36,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 147 transitions, 940 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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) [2024-11-12 08:21:36,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:36,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-12 08:21:36,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:37,799 INFO L124 PetriNetUnfolderBase]: 2749/4633 cut-off events. [2024-11-12 08:21:37,799 INFO L125 PetriNetUnfolderBase]: For 2451/2451 co-relation queries the response was YES. [2024-11-12 08:21:37,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12198 conditions, 4633 events. 2749/4633 cut-off events. For 2451/2451 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 26188 event pairs, 2334 based on Foata normal form. 1/3869 useless extension candidates. Maximal degree in co-relation 12168. Up to 4453 conditions per place. [2024-11-12 08:21:37,819 INFO L140 encePairwiseOnDemand]: 91/94 looper letters, 149 selfloop transitions, 1 changer transitions 19/170 dead transitions. [2024-11-12 08:21:37,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 170 transitions, 1329 flow [2024-11-12 08:21:37,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 08:21:37,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 08:21:37,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 111 transitions. [2024-11-12 08:21:37,820 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.29521276595744683 [2024-11-12 08:21:37,821 INFO L175 Difference]: Start difference. First operand has 135 places, 147 transitions, 940 flow. Second operand 4 states and 111 transitions. [2024-11-12 08:21:37,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 170 transitions, 1329 flow [2024-11-12 08:21:37,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 170 transitions, 1327 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 08:21:37,834 INFO L231 Difference]: Finished difference. Result has 134 places, 145 transitions, 920 flow [2024-11-12 08:21:37,835 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=938, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=920, PETRI_PLACES=134, PETRI_TRANSITIONS=145} [2024-11-12 08:21:37,835 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 64 predicate places. [2024-11-12 08:21:37,835 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 145 transitions, 920 flow [2024-11-12 08:21:37,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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) [2024-11-12 08:21:37,836 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:37,836 INFO L206 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:37,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-12 08:21:37,836 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:21:37,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:37,837 INFO L85 PathProgramCache]: Analyzing trace with hash -253074113, now seen corresponding path program 2 times [2024-11-12 08:21:37,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:37,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997810106] [2024-11-12 08:21:37,837 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:37,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:37,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:38,102 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-12 08:21:38,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:38,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997810106] [2024-11-12 08:21:38,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997810106] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:21:38,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:21:38,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 08:21:38,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642964823] [2024-11-12 08:21:38,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:21:38,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 08:21:38,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:38,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 08:21:38,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-12 08:21:38,104 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-12 08:21:38,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 145 transitions, 920 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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) [2024-11-12 08:21:38,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:38,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-12 08:21:38,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:38,878 INFO L124 PetriNetUnfolderBase]: 2663/4475 cut-off events. [2024-11-12 08:21:38,878 INFO L125 PetriNetUnfolderBase]: For 2235/2235 co-relation queries the response was YES. [2024-11-12 08:21:38,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11701 conditions, 4475 events. 2663/4475 cut-off events. For 2235/2235 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 24982 event pairs, 2272 based on Foata normal form. 1/3726 useless extension candidates. Maximal degree in co-relation 11670. Up to 4347 conditions per place. [2024-11-12 08:21:38,900 INFO L140 encePairwiseOnDemand]: 91/94 looper letters, 139 selfloop transitions, 0 changer transitions 22/162 dead transitions. [2024-11-12 08:21:38,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 162 transitions, 1278 flow [2024-11-12 08:21:38,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 08:21:38,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 08:21:38,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2024-11-12 08:21:38,901 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2765957446808511 [2024-11-12 08:21:38,901 INFO L175 Difference]: Start difference. First operand has 134 places, 145 transitions, 920 flow. Second operand 4 states and 104 transitions. [2024-11-12 08:21:38,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 162 transitions, 1278 flow [2024-11-12 08:21:38,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 162 transitions, 1275 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-12 08:21:38,911 INFO L231 Difference]: Finished difference. Result has 135 places, 140 transitions, 890 flow [2024-11-12 08:21:38,912 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=917, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=890, PETRI_PLACES=135, PETRI_TRANSITIONS=140} [2024-11-12 08:21:38,912 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 65 predicate places. [2024-11-12 08:21:38,912 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 140 transitions, 890 flow [2024-11-12 08:21:38,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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) [2024-11-12 08:21:38,912 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:38,912 INFO L206 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:38,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-12 08:21:38,913 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:21:38,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:38,913 INFO L85 PathProgramCache]: Analyzing trace with hash 954372552, now seen corresponding path program 1 times [2024-11-12 08:21:38,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:38,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025529589] [2024-11-12 08:21:38,914 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:38,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:38,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:39,216 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-12 08:21:39,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:39,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025529589] [2024-11-12 08:21:39,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025529589] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:21:39,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:21:39,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 08:21:39,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180544691] [2024-11-12 08:21:39,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:21:39,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 08:21:39,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:39,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 08:21:39,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-12 08:21:39,218 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-12 08:21:39,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 140 transitions, 890 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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) [2024-11-12 08:21:39,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:39,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-12 08:21:39,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:40,006 INFO L124 PetriNetUnfolderBase]: 2287/3854 cut-off events. [2024-11-12 08:21:40,006 INFO L125 PetriNetUnfolderBase]: For 1952/1952 co-relation queries the response was YES. [2024-11-12 08:21:40,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10079 conditions, 3854 events. 2287/3854 cut-off events. For 1952/1952 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 20675 event pairs, 1901 based on Foata normal form. 1/3290 useless extension candidates. Maximal degree in co-relation 10048. Up to 3687 conditions per place. [2024-11-12 08:21:40,019 INFO L140 encePairwiseOnDemand]: 91/94 looper letters, 142 selfloop transitions, 1 changer transitions 18/162 dead transitions. [2024-11-12 08:21:40,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 162 transitions, 1263 flow [2024-11-12 08:21:40,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 08:21:40,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 08:21:40,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 105 transitions. [2024-11-12 08:21:40,020 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.27925531914893614 [2024-11-12 08:21:40,020 INFO L175 Difference]: Start difference. First operand has 135 places, 140 transitions, 890 flow. Second operand 4 states and 105 transitions. [2024-11-12 08:21:40,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 162 transitions, 1263 flow [2024-11-12 08:21:40,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 162 transitions, 1255 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-12 08:21:40,027 INFO L231 Difference]: Finished difference. Result has 130 places, 138 transitions, 867 flow [2024-11-12 08:21:40,028 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=884, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=867, PETRI_PLACES=130, PETRI_TRANSITIONS=138} [2024-11-12 08:21:40,028 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 60 predicate places. [2024-11-12 08:21:40,028 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 138 transitions, 867 flow [2024-11-12 08:21:40,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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) [2024-11-12 08:21:40,028 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:40,028 INFO L206 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:40,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-12 08:21:40,029 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:21:40,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:40,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1710011116, now seen corresponding path program 2 times [2024-11-12 08:21:40,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:40,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770748011] [2024-11-12 08:21:40,030 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:40,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:40,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:40,271 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-12 08:21:40,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:40,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770748011] [2024-11-12 08:21:40,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770748011] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:21:40,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:21:40,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 08:21:40,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510740255] [2024-11-12 08:21:40,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:21:40,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 08:21:40,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:40,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 08:21:40,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-12 08:21:40,273 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-12 08:21:40,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 138 transitions, 867 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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) [2024-11-12 08:21:40,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:40,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-12 08:21:40,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:21:40,954 INFO L124 PetriNetUnfolderBase]: 2208/3708 cut-off events. [2024-11-12 08:21:40,954 INFO L125 PetriNetUnfolderBase]: For 1511/1511 co-relation queries the response was YES. [2024-11-12 08:21:40,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9581 conditions, 3708 events. 2208/3708 cut-off events. For 1511/1511 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 19568 event pairs, 1851 based on Foata normal form. 1/3154 useless extension candidates. Maximal degree in co-relation 9550. Up to 3601 conditions per place. [2024-11-12 08:21:40,972 INFO L140 encePairwiseOnDemand]: 91/94 looper letters, 128 selfloop transitions, 0 changer transitions 24/153 dead transitions. [2024-11-12 08:21:40,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 153 transitions, 1203 flow [2024-11-12 08:21:40,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 08:21:40,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 08:21:40,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 97 transitions. [2024-11-12 08:21:40,973 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2579787234042553 [2024-11-12 08:21:40,973 INFO L175 Difference]: Start difference. First operand has 130 places, 138 transitions, 867 flow. Second operand 4 states and 97 transitions. [2024-11-12 08:21:40,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 153 transitions, 1203 flow [2024-11-12 08:21:40,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 153 transitions, 1198 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-12 08:21:40,984 INFO L231 Difference]: Finished difference. Result has 131 places, 129 transitions, 828 flow [2024-11-12 08:21:40,985 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=862, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=828, PETRI_PLACES=131, PETRI_TRANSITIONS=129} [2024-11-12 08:21:40,985 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 61 predicate places. [2024-11-12 08:21:40,985 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 129 transitions, 828 flow [2024-11-12 08:21:40,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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) [2024-11-12 08:21:40,986 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:40,986 INFO L206 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:40,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-12 08:21:40,986 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:21:40,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:40,987 INFO L85 PathProgramCache]: Analyzing trace with hash 698782065, now seen corresponding path program 1 times [2024-11-12 08:21:40,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:40,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853482075] [2024-11-12 08:21:40,987 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:40,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:41,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:41,253 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-12 08:21:41,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:41,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853482075] [2024-11-12 08:21:41,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853482075] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:21:41,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:21:41,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 08:21:41,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034855682] [2024-11-12 08:21:41,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:21:41,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 08:21:41,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:41,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 08:21:41,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 08:21:41,254 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-12 08:21:41,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 129 transitions, 828 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) [2024-11-12 08:21:41,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:41,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-12 08:21:41,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand