./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d 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/parallel-parallel-sum-equiv.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 2d41b1dc1d5d7eec1f1fd4e3cbbef0194aa2dded6486a15b383e9bb8fe1468a3 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 02:44:05,081 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 02:44:05,150 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 02:44:05,155 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 02:44:05,155 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 02:44:05,183 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 02:44:05,184 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 02:44:05,184 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 02:44:05,185 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 02:44:05,185 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 02:44:05,185 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 02:44:05,186 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 02:44:05,186 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 02:44:05,187 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 02:44:05,187 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 02:44:05,187 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 02:44:05,188 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 02:44:05,188 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 02:44:05,188 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 02:44:05,189 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 02:44:05,189 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 02:44:05,190 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 02:44:05,190 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 02:44:05,190 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 02:44:05,190 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 02:44:05,191 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 02:44:05,191 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 02:44:05,191 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 02:44:05,192 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 02:44:05,192 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 02:44:05,192 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 02:44:05,193 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 02:44:05,193 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:44:05,193 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 02:44:05,194 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 02:44:05,194 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 02:44:05,194 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 02:44:05,194 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 02:44:05,195 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 02:44:05,195 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 02:44:05,195 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 02:44:05,198 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 02:44:05,198 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d41b1dc1d5d7eec1f1fd4e3cbbef0194aa2dded6486a15b383e9bb8fe1468a3 [2024-11-09 02:44:05,490 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 02:44:05,514 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 02:44:05,517 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 02:44:05,518 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 02:44:05,519 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 02:44:05,520 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c [2024-11-09 02:44:07,025 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 02:44:07,241 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 02:44:07,242 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c [2024-11-09 02:44:07,251 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f245556e/d67fe25bb6c643b59af5e1dd86d9946d/FLAGfd029bdc6 [2024-11-09 02:44:07,263 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f245556e/d67fe25bb6c643b59af5e1dd86d9946d [2024-11-09 02:44:07,265 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 02:44:07,266 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 02:44:07,268 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 02:44:07,268 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 02:44:07,272 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 02:44:07,273 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:44:07" (1/1) ... [2024-11-09 02:44:07,274 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e606d51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:44:07, skipping insertion in model container [2024-11-09 02:44:07,274 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:44:07" (1/1) ... [2024-11-09 02:44:07,296 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 02:44:07,490 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/parallel-parallel-sum-equiv.wvr.c[3822,3835] [2024-11-09 02:44:07,500 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:44:07,509 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 02:44:07,531 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/parallel-parallel-sum-equiv.wvr.c[3822,3835] [2024-11-09 02:44:07,535 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:44:07,553 INFO L204 MainTranslator]: Completed translation [2024-11-09 02:44:07,553 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:44:07 WrapperNode [2024-11-09 02:44:07,554 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 02:44:07,555 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 02:44:07,555 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 02:44:07,555 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 02:44:07,564 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:44:07" (1/1) ... [2024-11-09 02:44:07,580 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:44:07" (1/1) ... [2024-11-09 02:44:07,608 INFO L138 Inliner]: procedures = 26, calls = 53, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 251 [2024-11-09 02:44:07,611 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 02:44:07,611 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 02:44:07,612 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 02:44:07,612 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 02:44:07,623 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:44:07" (1/1) ... [2024-11-09 02:44:07,623 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:44:07" (1/1) ... [2024-11-09 02:44:07,631 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:44:07" (1/1) ... [2024-11-09 02:44:07,681 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-09 02:44:07,681 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:44:07" (1/1) ... [2024-11-09 02:44:07,686 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:44:07" (1/1) ... [2024-11-09 02:44:07,705 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:44:07" (1/1) ... [2024-11-09 02:44:07,717 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:44:07" (1/1) ... [2024-11-09 02:44:07,722 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:44:07" (1/1) ... [2024-11-09 02:44:07,727 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:44:07" (1/1) ... [2024-11-09 02:44:07,733 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 02:44:07,733 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 02:44:07,733 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 02:44:07,734 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 02:44:07,741 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:44:07" (1/1) ... [2024-11-09 02:44:07,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:44:07,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:44:07,821 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) [2024-11-09 02:44:07,824 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 [2024-11-09 02:44:07,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 02:44:07,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 02:44:07,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 02:44:07,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 02:44:07,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 02:44:07,872 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 02:44:07,872 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 02:44:07,873 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 02:44:07,873 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 02:44:07,873 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-09 02:44:07,873 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-09 02:44:07,874 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-09 02:44:07,874 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-09 02:44:07,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 02:44:07,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 02:44:07,874 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-09 02:44:07,874 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-09 02:44:07,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 02:44:07,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 02:44:07,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 02:44:07,876 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 02:44:07,995 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 02:44:07,997 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 02:44:08,396 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 02:44:08,396 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 02:44:08,726 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 02:44:08,727 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-09 02:44:08,728 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:44:08 BoogieIcfgContainer [2024-11-09 02:44:08,728 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 02:44:08,731 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 02:44:08,732 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 02:44:08,735 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 02:44:08,735 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 02:44:07" (1/3) ... [2024-11-09 02:44:08,736 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d48522 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:44:08, skipping insertion in model container [2024-11-09 02:44:08,736 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:44:07" (2/3) ... [2024-11-09 02:44:08,737 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d48522 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:44:08, skipping insertion in model container [2024-11-09 02:44:08,737 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:44:08" (3/3) ... [2024-11-09 02:44:08,738 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-equiv.wvr.c [2024-11-09 02:44:08,757 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 02:44:08,757 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 02:44:08,757 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 02:44:08,903 INFO L143 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2024-11-09 02:44:08,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 59 transitions, 158 flow [2024-11-09 02:44:08,979 INFO L124 PetriNetUnfolderBase]: 9/52 cut-off events. [2024-11-09 02:44:08,981 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-09 02:44:08,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 52 events. 9/52 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 96 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 53. Up to 3 conditions per place. [2024-11-09 02:44:08,986 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 59 transitions, 158 flow [2024-11-09 02:44:08,989 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 51 transitions, 132 flow [2024-11-09 02:44:08,997 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:44:09,003 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;@20591edf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:44:09,003 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-09 02:44:09,018 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:44:09,018 INFO L124 PetriNetUnfolderBase]: 9/50 cut-off events. [2024-11-09 02:44:09,018 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-09 02:44:09,019 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:44:09,019 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:44:09,020 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-11-09 02:44:09,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:44:09,027 INFO L85 PathProgramCache]: Analyzing trace with hash 946166533, now seen corresponding path program 1 times [2024-11-09 02:44:09,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:44:09,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487328057] [2024-11-09 02:44:09,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:44:09,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:44:09,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:44:09,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:44:09,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:44:09,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487328057] [2024-11-09 02:44:09,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487328057] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:44:09,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:44:09,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 02:44:09,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416249834] [2024-11-09 02:44:09,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:44:09,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 02:44:09,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:44:09,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 02:44:09,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 02:44:09,344 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2024-11-09 02:44:09,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 132 flow. Second operand has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 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) [2024-11-09 02:44:09,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:44:09,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2024-11-09 02:44:09,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:44:10,560 INFO L124 PetriNetUnfolderBase]: 8088/10948 cut-off events. [2024-11-09 02:44:10,560 INFO L125 PetriNetUnfolderBase]: For 614/614 co-relation queries the response was YES. [2024-11-09 02:44:10,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22845 conditions, 10948 events. 8088/10948 cut-off events. For 614/614 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 51527 event pairs, 6978 based on Foata normal form. 0/9835 useless extension candidates. Maximal degree in co-relation 22783. Up to 10923 conditions per place. [2024-11-09 02:44:10,645 INFO L140 encePairwiseOnDemand]: 58/61 looper letters, 44 selfloop transitions, 0 changer transitions 0/48 dead transitions. [2024-11-09 02:44:10,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 48 transitions, 214 flow [2024-11-09 02:44:10,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 02:44:10,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-09 02:44:10,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 63 transitions. [2024-11-09 02:44:10,659 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5163934426229508 [2024-11-09 02:44:10,661 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 132 flow. Second operand 2 states and 63 transitions. [2024-11-09 02:44:10,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 48 transitions, 214 flow [2024-11-09 02:44:10,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 48 transitions, 194 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-09 02:44:10,675 INFO L231 Difference]: Finished difference. Result has 48 places, 48 transitions, 106 flow [2024-11-09 02:44:10,677 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=106, PETRI_PLACES=48, PETRI_TRANSITIONS=48} [2024-11-09 02:44:10,681 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, -7 predicate places. [2024-11-09 02:44:10,681 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 48 transitions, 106 flow [2024-11-09 02:44:10,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 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) [2024-11-09 02:44:10,682 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:44:10,682 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:44:10,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 02:44:10,683 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-11-09 02:44:10,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:44:10,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1505333409, now seen corresponding path program 1 times [2024-11-09 02:44:10,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:44:10,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386759233] [2024-11-09 02:44:10,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:44:10,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:44:10,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:44:10,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:44:10,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:44:10,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386759233] [2024-11-09 02:44:10,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386759233] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:44:10,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:44:10,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:44:10,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489733448] [2024-11-09 02:44:10,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:44:10,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:44:10,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:44:10,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:44:10,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:44:10,941 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2024-11-09 02:44:10,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 48 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2024-11-09 02:44:10,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:44:10,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2024-11-09 02:44:10,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:44:12,976 INFO L124 PetriNetUnfolderBase]: 19350/26141 cut-off events. [2024-11-09 02:44:12,977 INFO L125 PetriNetUnfolderBase]: For 299/299 co-relation queries the response was YES. [2024-11-09 02:44:13,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52854 conditions, 26141 events. 19350/26141 cut-off events. For 299/299 co-relation queries the response was YES. Maximal size of possible extension queue 871. Compared 141908 event pairs, 6122 based on Foata normal form. 1/23284 useless extension candidates. Maximal degree in co-relation 52851. Up to 11645 conditions per place. [2024-11-09 02:44:13,159 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 106 selfloop transitions, 7 changer transitions 1/118 dead transitions. [2024-11-09 02:44:13,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 118 transitions, 490 flow [2024-11-09 02:44:13,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 02:44:13,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 02:44:13,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 147 transitions. [2024-11-09 02:44:13,163 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6024590163934426 [2024-11-09 02:44:13,163 INFO L175 Difference]: Start difference. First operand has 48 places, 48 transitions, 106 flow. Second operand 4 states and 147 transitions. [2024-11-09 02:44:13,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 118 transitions, 490 flow [2024-11-09 02:44:13,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 118 transitions, 490 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 02:44:13,168 INFO L231 Difference]: Finished difference. Result has 53 places, 54 transitions, 151 flow [2024-11-09 02:44:13,168 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=151, PETRI_PLACES=53, PETRI_TRANSITIONS=54} [2024-11-09 02:44:13,169 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, -2 predicate places. [2024-11-09 02:44:13,170 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 54 transitions, 151 flow [2024-11-09 02:44:13,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2024-11-09 02:44:13,170 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:44:13,170 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:44:13,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 02:44:13,171 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-11-09 02:44:13,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:44:13,173 INFO L85 PathProgramCache]: Analyzing trace with hash 647531487, now seen corresponding path program 2 times [2024-11-09 02:44:13,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:44:13,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975968652] [2024-11-09 02:44:13,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:44:13,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:44:13,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:44:13,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:44:13,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:44:13,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975968652] [2024-11-09 02:44:13,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975968652] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:44:13,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:44:13,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:44:13,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670614205] [2024-11-09 02:44:13,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:44:13,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:44:13,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:44:13,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:44:13,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:44:13,333 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2024-11-09 02:44:13,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 54 transitions, 151 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2024-11-09 02:44:13,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:44:13,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2024-11-09 02:44:13,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:44:16,293 INFO L124 PetriNetUnfolderBase]: 30683/41318 cut-off events. [2024-11-09 02:44:16,294 INFO L125 PetriNetUnfolderBase]: For 4030/4030 co-relation queries the response was YES. [2024-11-09 02:44:16,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89848 conditions, 41318 events. 30683/41318 cut-off events. For 4030/4030 co-relation queries the response was YES. Maximal size of possible extension queue 1147. Compared 231065 event pairs, 14006 based on Foata normal form. 1/36758 useless extension candidates. Maximal degree in co-relation 89842. Up to 19516 conditions per place. [2024-11-09 02:44:16,524 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 112 selfloop transitions, 8 changer transitions 1/125 dead transitions. [2024-11-09 02:44:16,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 125 transitions, 570 flow [2024-11-09 02:44:16,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 02:44:16,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 02:44:16,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 148 transitions. [2024-11-09 02:44:16,526 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6065573770491803 [2024-11-09 02:44:16,527 INFO L175 Difference]: Start difference. First operand has 53 places, 54 transitions, 151 flow. Second operand 4 states and 148 transitions. [2024-11-09 02:44:16,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 125 transitions, 570 flow [2024-11-09 02:44:16,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 125 transitions, 570 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 02:44:16,533 INFO L231 Difference]: Finished difference. Result has 58 places, 59 transitions, 211 flow [2024-11-09 02:44:16,533 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=211, PETRI_PLACES=58, PETRI_TRANSITIONS=59} [2024-11-09 02:44:16,534 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 3 predicate places. [2024-11-09 02:44:16,534 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 59 transitions, 211 flow [2024-11-09 02:44:16,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2024-11-09 02:44:16,534 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:44:16,534 INFO L204 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2024-11-09 02:44:16,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 02:44:16,535 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-11-09 02:44:16,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:44:16,536 INFO L85 PathProgramCache]: Analyzing trace with hash -600442014, now seen corresponding path program 1 times [2024-11-09 02:44:16,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:44:16,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702048938] [2024-11-09 02:44:16,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:44:16,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:44:16,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:44:16,688 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:44:16,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:44:16,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702048938] [2024-11-09 02:44:16,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702048938] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:44:16,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:44:16,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:44:16,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517829861] [2024-11-09 02:44:16,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:44:16,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:44:16,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:44:16,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:44:16,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:44:16,695 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2024-11-09 02:44:16,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 59 transitions, 211 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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) [2024-11-09 02:44:16,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:44:16,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2024-11-09 02:44:16,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:44:19,891 INFO L124 PetriNetUnfolderBase]: 42068/57206 cut-off events. [2024-11-09 02:44:19,891 INFO L125 PetriNetUnfolderBase]: For 16662/16666 co-relation queries the response was YES. [2024-11-09 02:44:19,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128512 conditions, 57206 events. 42068/57206 cut-off events. For 16662/16666 co-relation queries the response was YES. Maximal size of possible extension queue 1618. Compared 337064 event pairs, 32096 based on Foata normal form. 1244/51696 useless extension candidates. Maximal degree in co-relation 128503. Up to 41253 conditions per place. [2024-11-09 02:44:20,148 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 102 selfloop transitions, 5 changer transitions 2/113 dead transitions. [2024-11-09 02:44:20,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 113 transitions, 601 flow [2024-11-09 02:44:20,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:44:20,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:44:20,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 136 transitions. [2024-11-09 02:44:20,151 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4459016393442623 [2024-11-09 02:44:20,151 INFO L175 Difference]: Start difference. First operand has 58 places, 59 transitions, 211 flow. Second operand 5 states and 136 transitions. [2024-11-09 02:44:20,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 113 transitions, 601 flow [2024-11-09 02:44:20,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 113 transitions, 597 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-11-09 02:44:20,175 INFO L231 Difference]: Finished difference. Result has 65 places, 63 transitions, 259 flow [2024-11-09 02:44:20,175 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=259, PETRI_PLACES=65, PETRI_TRANSITIONS=63} [2024-11-09 02:44:20,176 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 10 predicate places. [2024-11-09 02:44:20,177 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 63 transitions, 259 flow [2024-11-09 02:44:20,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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) [2024-11-09 02:44:20,177 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:44:20,177 INFO L204 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2024-11-09 02:44:20,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 02:44:20,178 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-11-09 02:44:20,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:44:20,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1829728221, now seen corresponding path program 1 times [2024-11-09 02:44:20,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:44:20,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693536636] [2024-11-09 02:44:20,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:44:20,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:44:20,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:44:20,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:44:20,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:44:20,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693536636] [2024-11-09 02:44:20,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693536636] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:44:20,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:44:20,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:44:20,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672254339] [2024-11-09 02:44:20,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:44:20,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:44:20,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:44:20,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:44:20,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:44:20,320 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2024-11-09 02:44:20,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 63 transitions, 259 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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) [2024-11-09 02:44:20,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:44:20,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2024-11-09 02:44:20,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:44:23,431 INFO L124 PetriNetUnfolderBase]: 37183/50532 cut-off events. [2024-11-09 02:44:23,432 INFO L125 PetriNetUnfolderBase]: For 15405/15405 co-relation queries the response was YES. [2024-11-09 02:44:23,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115709 conditions, 50532 events. 37183/50532 cut-off events. For 15405/15405 co-relation queries the response was YES. Maximal size of possible extension queue 1312. Compared 290958 event pairs, 28958 based on Foata normal form. 382/45021 useless extension candidates. Maximal degree in co-relation 115696. Up to 41253 conditions per place. [2024-11-09 02:44:23,696 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 54 selfloop transitions, 2 changer transitions 60/120 dead transitions. [2024-11-09 02:44:23,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 120 transitions, 634 flow [2024-11-09 02:44:23,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:44:23,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:44:23,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 145 transitions. [2024-11-09 02:44:23,699 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47540983606557374 [2024-11-09 02:44:23,699 INFO L175 Difference]: Start difference. First operand has 65 places, 63 transitions, 259 flow. Second operand 5 states and 145 transitions. [2024-11-09 02:44:23,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 120 transitions, 634 flow [2024-11-09 02:44:23,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 120 transitions, 630 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-09 02:44:23,742 INFO L231 Difference]: Finished difference. Result has 70 places, 60 transitions, 235 flow [2024-11-09 02:44:23,743 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=235, PETRI_PLACES=70, PETRI_TRANSITIONS=60} [2024-11-09 02:44:23,743 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 15 predicate places. [2024-11-09 02:44:23,744 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 60 transitions, 235 flow [2024-11-09 02:44:23,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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) [2024-11-09 02:44:23,744 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:44:23,744 INFO L204 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:44:23,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 02:44:23,745 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-11-09 02:44:23,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:44:23,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1152140109, now seen corresponding path program 1 times [2024-11-09 02:44:23,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:44:23,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079509379] [2024-11-09 02:44:23,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:44:23,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:44:23,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:44:23,917 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:44:23,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:44:23,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079509379] [2024-11-09 02:44:23,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079509379] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:44:23,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013147247] [2024-11-09 02:44:23,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:44:23,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:44:23,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:44:23,923 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) [2024-11-09 02:44:23,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 02:44:24,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:44:24,050 INFO L255 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 02:44:24,057 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:44:24,173 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:44:24,174 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:44:24,258 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:44:24,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013147247] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:44:24,260 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:44:24,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-09 02:44:24,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087872100] [2024-11-09 02:44:24,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:44:24,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 02:44:24,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:44:24,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 02:44:24,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-11-09 02:44:24,264 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2024-11-09 02:44:24,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 60 transitions, 235 flow. Second operand has 12 states, 12 states have (on average 12.416666666666666) internal successors, (149), 12 states have internal predecessors, (149), 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) [2024-11-09 02:44:24,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:44:24,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2024-11-09 02:44:24,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:44:28,471 INFO L124 PetriNetUnfolderBase]: 46892/63464 cut-off events. [2024-11-09 02:44:28,471 INFO L125 PetriNetUnfolderBase]: For 28393/28393 co-relation queries the response was YES. [2024-11-09 02:44:28,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149702 conditions, 63464 events. 46892/63464 cut-off events. For 28393/28393 co-relation queries the response was YES. Maximal size of possible extension queue 1834. Compared 382516 event pairs, 24105 based on Foata normal form. 799/57084 useless extension candidates. Maximal degree in co-relation 149687. Up to 30623 conditions per place. [2024-11-09 02:44:28,828 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 159 selfloop transitions, 7 changer transitions 1/171 dead transitions. [2024-11-09 02:44:28,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 171 transitions, 955 flow [2024-11-09 02:44:28,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 02:44:28,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 02:44:28,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 199 transitions. [2024-11-09 02:44:28,831 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46604215456674475 [2024-11-09 02:44:28,831 INFO L175 Difference]: Start difference. First operand has 70 places, 60 transitions, 235 flow. Second operand 7 states and 199 transitions. [2024-11-09 02:44:28,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 171 transitions, 955 flow [2024-11-09 02:44:28,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 171 transitions, 929 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-11-09 02:44:28,959 INFO L231 Difference]: Finished difference. Result has 71 places, 65 transitions, 284 flow [2024-11-09 02:44:28,959 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=284, PETRI_PLACES=71, PETRI_TRANSITIONS=65} [2024-11-09 02:44:28,960 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 16 predicate places. [2024-11-09 02:44:28,960 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 65 transitions, 284 flow [2024-11-09 02:44:28,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.416666666666666) internal successors, (149), 12 states have internal predecessors, (149), 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) [2024-11-09 02:44:28,960 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:44:28,961 INFO L204 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:44:28,980 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 02:44:29,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-09 02:44:29,162 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-11-09 02:44:29,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:44:29,163 INFO L85 PathProgramCache]: Analyzing trace with hash -634055153, now seen corresponding path program 1 times [2024-11-09 02:44:29,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:44:29,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608641121] [2024-11-09 02:44:29,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:44:29,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:44:29,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:44:29,321 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:44:29,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:44:29,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608641121] [2024-11-09 02:44:29,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608641121] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:44:29,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181168835] [2024-11-09 02:44:29,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:44:29,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:44:29,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:44:29,325 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) [2024-11-09 02:44:29,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 02:44:29,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:44:29,430 INFO L255 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 02:44:29,432 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:44:29,554 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:44:29,554 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:44:29,629 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:44:29,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181168835] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:44:29,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:44:29,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-09 02:44:29,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421419875] [2024-11-09 02:44:29,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:44:29,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 02:44:29,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:44:29,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 02:44:29,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-11-09 02:44:29,634 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2024-11-09 02:44:29,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 65 transitions, 284 flow. Second operand has 12 states, 12 states have (on average 13.583333333333334) internal successors, (163), 12 states have internal predecessors, (163), 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) [2024-11-09 02:44:29,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:44:29,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2024-11-09 02:44:29,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:44:32,548 INFO L124 PetriNetUnfolderBase]: 36481/49836 cut-off events. [2024-11-09 02:44:32,548 INFO L125 PetriNetUnfolderBase]: For 23228/23232 co-relation queries the response was YES. [2024-11-09 02:44:32,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118928 conditions, 49836 events. 36481/49836 cut-off events. For 23228/23232 co-relation queries the response was YES. Maximal size of possible extension queue 1391. Compared 291995 event pairs, 17518 based on Foata normal form. 1460/45364 useless extension candidates. Maximal degree in co-relation 118913. Up to 21141 conditions per place. [2024-11-09 02:44:32,879 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 84 selfloop transitions, 5 changer transitions 47/140 dead transitions. [2024-11-09 02:44:32,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 140 transitions, 807 flow [2024-11-09 02:44:32,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 02:44:32,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 02:44:32,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-11-09 02:44:32,881 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40749414519906324 [2024-11-09 02:44:32,881 INFO L175 Difference]: Start difference. First operand has 71 places, 65 transitions, 284 flow. Second operand 7 states and 174 transitions. [2024-11-09 02:44:32,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 140 transitions, 807 flow [2024-11-09 02:44:32,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 140 transitions, 799 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-09 02:44:32,900 INFO L231 Difference]: Finished difference. Result has 80 places, 63 transitions, 278 flow [2024-11-09 02:44:32,900 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=278, PETRI_PLACES=80, PETRI_TRANSITIONS=63} [2024-11-09 02:44:32,901 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 25 predicate places. [2024-11-09 02:44:32,901 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 63 transitions, 278 flow [2024-11-09 02:44:32,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.583333333333334) internal successors, (163), 12 states have internal predecessors, (163), 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) [2024-11-09 02:44:32,902 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:44:32,902 INFO L204 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:44:32,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 02:44:33,102 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,SelfDestructingSolverStorable6 [2024-11-09 02:44:33,103 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-11-09 02:44:33,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:44:33,103 INFO L85 PathProgramCache]: Analyzing trace with hash -472346783, now seen corresponding path program 2 times [2024-11-09 02:44:33,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:44:33,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913585300] [2024-11-09 02:44:33,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:44:33,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:44:33,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:44:33,286 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:44:33,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:44:33,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913585300] [2024-11-09 02:44:33,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913585300] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:44:33,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564871362] [2024-11-09 02:44:33,288 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:44:33,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:44:33,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:44:33,293 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) [2024-11-09 02:44:33,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 02:44:33,406 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:44:33,407 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:44:33,408 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 02:44:33,410 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:44:33,540 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:44:33,540 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:44:33,634 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:44:33,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564871362] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:44:33,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:44:33,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-09 02:44:33,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676935991] [2024-11-09 02:44:33,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:44:33,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 02:44:33,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:44:33,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 02:44:33,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-09 02:44:33,637 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2024-11-09 02:44:33,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 63 transitions, 278 flow. Second operand has 12 states, 12 states have (on average 14.166666666666666) internal successors, (170), 12 states have internal predecessors, (170), 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) [2024-11-09 02:44:33,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:44:33,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2024-11-09 02:44:33,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:44:35,752 INFO L124 PetriNetUnfolderBase]: 23295/31570 cut-off events. [2024-11-09 02:44:35,752 INFO L125 PetriNetUnfolderBase]: For 25161/25165 co-relation queries the response was YES. [2024-11-09 02:44:35,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84389 conditions, 31570 events. 23295/31570 cut-off events. For 25161/25165 co-relation queries the response was YES. Maximal size of possible extension queue 811. Compared 171113 event pairs, 11753 based on Foata normal form. 830/28861 useless extension candidates. Maximal degree in co-relation 84370. Up to 24876 conditions per place. [2024-11-09 02:44:35,945 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 75 selfloop transitions, 8 changer transitions 0/87 dead transitions. [2024-11-09 02:44:35,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 87 transitions, 534 flow [2024-11-09 02:44:35,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 02:44:35,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 02:44:35,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 126 transitions. [2024-11-09 02:44:35,947 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.29508196721311475 [2024-11-09 02:44:35,947 INFO L175 Difference]: Start difference. First operand has 80 places, 63 transitions, 278 flow. Second operand 7 states and 126 transitions. [2024-11-09 02:44:35,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 87 transitions, 534 flow [2024-11-09 02:44:36,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 87 transitions, 488 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-11-09 02:44:36,033 INFO L231 Difference]: Finished difference. Result has 74 places, 65 transitions, 282 flow [2024-11-09 02:44:36,033 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=282, PETRI_PLACES=74, PETRI_TRANSITIONS=65} [2024-11-09 02:44:36,034 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 19 predicate places. [2024-11-09 02:44:36,034 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 65 transitions, 282 flow [2024-11-09 02:44:36,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.166666666666666) internal successors, (170), 12 states have internal predecessors, (170), 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) [2024-11-09 02:44:36,035 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:44:36,035 INFO L204 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:44:36,047 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 02:44:36,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:44:36,237 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-11-09 02:44:36,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:44:36,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1433099723, now seen corresponding path program 1 times [2024-11-09 02:44:36,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:44:36,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74416527] [2024-11-09 02:44:36,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:44:36,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:44:36,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:44:36,619 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:44:36,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:44:36,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74416527] [2024-11-09 02:44:36,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74416527] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:44:36,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097726266] [2024-11-09 02:44:36,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:44:36,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:44:36,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:44:36,622 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) [2024-11-09 02:44:36,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 02:44:36,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:44:36,714 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 02:44:36,716 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:44:36,791 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:44:36,794 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:44:36,869 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:44:36,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097726266] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 02:44:36,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 02:44:36,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2024-11-09 02:44:36,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094797982] [2024-11-09 02:44:36,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:44:36,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 02:44:36,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:44:36,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 02:44:36,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-09 02:44:36,872 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2024-11-09 02:44:36,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 65 transitions, 282 flow. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 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) [2024-11-09 02:44:36,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:44:36,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2024-11-09 02:44:36,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:44:38,613 INFO L124 PetriNetUnfolderBase]: 19893/26924 cut-off events. [2024-11-09 02:44:38,613 INFO L125 PetriNetUnfolderBase]: For 18095/18095 co-relation queries the response was YES. [2024-11-09 02:44:38,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69921 conditions, 26924 events. 19893/26924 cut-off events. For 18095/18095 co-relation queries the response was YES. Maximal size of possible extension queue 662. Compared 141847 event pairs, 11581 based on Foata normal form. 589/24360 useless extension candidates. Maximal degree in co-relation 69906. Up to 17846 conditions per place. [2024-11-09 02:44:38,756 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 94 selfloop transitions, 6 changer transitions 1/105 dead transitions. [2024-11-09 02:44:38,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 105 transitions, 639 flow [2024-11-09 02:44:38,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:44:38,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:44:38,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 127 transitions. [2024-11-09 02:44:38,758 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3469945355191257 [2024-11-09 02:44:38,758 INFO L175 Difference]: Start difference. First operand has 74 places, 65 transitions, 282 flow. Second operand 6 states and 127 transitions. [2024-11-09 02:44:38,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 105 transitions, 639 flow [2024-11-09 02:44:38,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 105 transitions, 616 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-11-09 02:44:38,801 INFO L231 Difference]: Finished difference. Result has 76 places, 66 transitions, 287 flow [2024-11-09 02:44:38,801 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=287, PETRI_PLACES=76, PETRI_TRANSITIONS=66} [2024-11-09 02:44:38,802 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 21 predicate places. [2024-11-09 02:44:38,802 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 66 transitions, 287 flow [2024-11-09 02:44:38,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 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) [2024-11-09 02:44:38,802 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:44:38,803 INFO L204 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:44:38,816 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 02:44:39,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:44:39,004 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-11-09 02:44:39,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:44:39,004 INFO L85 PathProgramCache]: Analyzing trace with hash 960638869, now seen corresponding path program 1 times [2024-11-09 02:44:39,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:44:39,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482095043] [2024-11-09 02:44:39,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:44:39,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:44:39,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:44:39,764 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:44:39,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:44:39,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482095043] [2024-11-09 02:44:39,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482095043] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:44:39,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299965354] [2024-11-09 02:44:39,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:44:39,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:44:39,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:44:39,768 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) [2024-11-09 02:44:39,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 02:44:39,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:44:39,876 INFO L255 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-09 02:44:39,878 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:44:39,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-11-09 02:44:39,995 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:44:39,996 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:44:40,083 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:44:40,084 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 20 treesize of output 14 [2024-11-09 02:44:40,140 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:44:40,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299965354] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:44:40,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:44:40,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 13 [2024-11-09 02:44:40,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552222709] [2024-11-09 02:44:40,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:44:40,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 02:44:40,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:44:40,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 02:44:40,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-11-09 02:44:40,143 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2024-11-09 02:44:40,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 66 transitions, 287 flow. Second operand has 13 states, 13 states have (on average 12.153846153846153) internal successors, (158), 13 states have internal predecessors, (158), 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) [2024-11-09 02:44:40,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:44:40,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2024-11-09 02:44:40,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:44:43,689 INFO L124 PetriNetUnfolderBase]: 38600/52225 cut-off events. [2024-11-09 02:44:43,690 INFO L125 PetriNetUnfolderBase]: For 35692/35696 co-relation queries the response was YES. [2024-11-09 02:44:43,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135718 conditions, 52225 events. 38600/52225 cut-off events. For 35692/35696 co-relation queries the response was YES. Maximal size of possible extension queue 1245. Compared 297021 event pairs, 8521 based on Foata normal form. 3/45986 useless extension candidates. Maximal degree in co-relation 135702. Up to 20797 conditions per place. [2024-11-09 02:44:44,082 INFO L140 encePairwiseOnDemand]: 50/61 looper letters, 255 selfloop transitions, 34 changer transitions 5/298 dead transitions. [2024-11-09 02:44:44,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 298 transitions, 1671 flow [2024-11-09 02:44:44,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 02:44:44,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-09 02:44:44,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 369 transitions. [2024-11-09 02:44:44,085 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46532156368221944 [2024-11-09 02:44:44,085 INFO L175 Difference]: Start difference. First operand has 76 places, 66 transitions, 287 flow. Second operand 13 states and 369 transitions. [2024-11-09 02:44:44,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 298 transitions, 1671 flow [2024-11-09 02:44:44,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 298 transitions, 1652 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-09 02:44:44,149 INFO L231 Difference]: Finished difference. Result has 89 places, 93 transitions, 567 flow [2024-11-09 02:44:44,150 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=567, PETRI_PLACES=89, PETRI_TRANSITIONS=93} [2024-11-09 02:44:44,150 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 34 predicate places. [2024-11-09 02:44:44,150 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 93 transitions, 567 flow [2024-11-09 02:44:44,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.153846153846153) internal successors, (158), 13 states have internal predecessors, (158), 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) [2024-11-09 02:44:44,151 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:44:44,151 INFO L204 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:44:44,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-09 02:44:44,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-09 02:44:44,352 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-11-09 02:44:44,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:44:44,352 INFO L85 PathProgramCache]: Analyzing trace with hash -2069580369, now seen corresponding path program 1 times [2024-11-09 02:44:44,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:44:44,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618849382] [2024-11-09 02:44:44,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:44:44,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:44:44,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:44:44,957 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:44:44,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:44:44,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618849382] [2024-11-09 02:44:44,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618849382] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:44:44,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082019203] [2024-11-09 02:44:44,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:44:44,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:44:44,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:44:44,960 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) [2024-11-09 02:44:44,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 02:44:45,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:44:45,078 INFO L255 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-09 02:44:45,080 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:44:45,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-11-09 02:44:45,245 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:44:45,246 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:44:45,342 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:44:45,343 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 20 treesize of output 14 [2024-11-09 02:44:45,382 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:44:45,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082019203] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:44:45,382 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:44:45,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 19 [2024-11-09 02:44:45,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450033498] [2024-11-09 02:44:45,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:44:45,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 02:44:45,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:44:45,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 02:44:45,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2024-11-09 02:44:45,388 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2024-11-09 02:44:45,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 93 transitions, 567 flow. Second operand has 19 states, 19 states have (on average 11.947368421052632) internal successors, (227), 19 states have internal predecessors, (227), 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) [2024-11-09 02:44:45,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:44:45,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2024-11-09 02:44:45,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand