./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 3289d67d 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-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 19:27:27,897 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 19:27:27,961 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 19:27:27,969 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 19:27:27,970 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 19:27:27,997 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 19:27:27,997 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 19:27:27,998 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 19:27:27,998 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 19:27:27,999 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 19:27:27,999 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 19:27:27,999 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 19:27:28,000 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 19:27:28,000 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 19:27:28,001 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 19:27:28,001 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 19:27:28,003 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 19:27:28,005 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 19:27:28,005 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 19:27:28,006 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 19:27:28,006 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 19:27:28,007 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 19:27:28,007 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 19:27:28,007 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 19:27:28,010 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 19:27:28,011 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 19:27:28,011 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 19:27:28,011 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 19:27:28,012 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 19:27:28,012 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 19:27:28,012 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 19:27:28,012 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 19:27:28,012 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:27:28,013 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 19:27:28,013 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 19:27:28,013 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 19:27:28,014 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 19:27:28,014 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 19:27:28,014 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 19:27:28,014 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 19:27:28,015 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 19:27:28,016 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 19:27:28,016 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d41b1dc1d5d7eec1f1fd4e3cbbef0194aa2dded6486a15b383e9bb8fe1468a3 [2024-11-16 19:27:28,255 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 19:27:28,280 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 19:27:28,284 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 19:27:28,285 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 19:27:28,286 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 19:27:28,287 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c [2024-11-16 19:27:29,766 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 19:27:29,973 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 19:27:29,974 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c [2024-11-16 19:27:29,982 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/740092ef4/f8c5906ee1e44a7e807df844e4a199b6/FLAGd74511408 [2024-11-16 19:27:30,349 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/740092ef4/f8c5906ee1e44a7e807df844e4a199b6 [2024-11-16 19:27:30,352 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 19:27:30,353 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 19:27:30,354 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 19:27:30,354 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 19:27:30,358 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 19:27:30,359 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:27:30" (1/1) ... [2024-11-16 19:27:30,360 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2089bdaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:27:30, skipping insertion in model container [2024-11-16 19:27:30,360 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:27:30" (1/1) ... [2024-11-16 19:27:30,381 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 19:27:30,571 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] [2024-11-16 19:27:30,582 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:27:30,591 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 19:27:30,611 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] [2024-11-16 19:27:30,615 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:27:30,639 INFO L204 MainTranslator]: Completed translation [2024-11-16 19:27:30,640 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:27:30 WrapperNode [2024-11-16 19:27:30,640 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 19:27:30,641 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 19:27:30,641 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 19:27:30,641 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 19:27:30,648 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:27:30" (1/1) ... [2024-11-16 19:27:30,659 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:27:30" (1/1) ... [2024-11-16 19:27:30,695 INFO L138 Inliner]: procedures = 26, calls = 53, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 247 [2024-11-16 19:27:30,695 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 19:27:30,696 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 19:27:30,696 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 19:27:30,696 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 19:27:30,710 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:27:30" (1/1) ... [2024-11-16 19:27:30,711 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:27:30" (1/1) ... [2024-11-16 19:27:30,716 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:27:30" (1/1) ... [2024-11-16 19:27:30,736 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]. [2024-11-16 19:27:30,737 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:27:30" (1/1) ... [2024-11-16 19:27:30,737 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:27:30" (1/1) ... [2024-11-16 19:27:30,746 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:27:30" (1/1) ... [2024-11-16 19:27:30,747 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:27:30" (1/1) ... [2024-11-16 19:27:30,749 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:27:30" (1/1) ... [2024-11-16 19:27:30,750 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:27:30" (1/1) ... [2024-11-16 19:27:30,753 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 19:27:30,754 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 19:27:30,754 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 19:27:30,755 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 19:27:30,755 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:27:30" (1/1) ... [2024-11-16 19:27:30,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:27:30,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:27:30,804 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) [2024-11-16 19:27:30,807 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 [2024-11-16 19:27:30,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 19:27:30,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 19:27:30,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 19:27:30,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 19:27:30,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 19:27:30,857 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-16 19:27:30,858 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-16 19:27:30,858 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-16 19:27:30,860 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-16 19:27:30,860 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-16 19:27:30,860 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-16 19:27:30,860 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-16 19:27:30,860 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-16 19:27:30,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 19:27:30,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 19:27:30,861 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-16 19:27:30,861 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-16 19:27:30,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-16 19:27:30,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 19:27:30,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 19:27:30,864 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-16 19:27:31,057 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 19:27:31,060 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 19:27:31,495 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-16 19:27:31,498 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 19:27:31,826 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 19:27:31,827 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 19:27:31,827 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:27:31 BoogieIcfgContainer [2024-11-16 19:27:31,827 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 19:27:31,830 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 19:27:31,832 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 19:27:31,835 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 19:27:31,836 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:27:30" (1/3) ... [2024-11-16 19:27:31,836 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79c4e862 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:27:31, skipping insertion in model container [2024-11-16 19:27:31,836 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:27:30" (2/3) ... [2024-11-16 19:27:31,837 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79c4e862 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:27:31, skipping insertion in model container [2024-11-16 19:27:31,837 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:27:31" (3/3) ... [2024-11-16 19:27:31,838 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-equiv.wvr.c [2024-11-16 19:27:31,857 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 19:27:31,858 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 19:27:31,858 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-16 19:27:31,945 INFO L143 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2024-11-16 19:27:31,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 62 transitions, 164 flow [2024-11-16 19:27:32,029 INFO L124 PetriNetUnfolderBase]: 10/55 cut-off events. [2024-11-16 19:27:32,029 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-16 19:27:32,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 55 events. 10/55 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 99 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 53. Up to 3 conditions per place. [2024-11-16 19:27:32,037 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 62 transitions, 164 flow [2024-11-16 19:27:32,040 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 54 transitions, 138 flow [2024-11-16 19:27:32,053 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 19:27:32,059 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;@533c8a13, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 19:27:32,059 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-16 19:27:32,082 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 19:27:32,083 INFO L124 PetriNetUnfolderBase]: 10/53 cut-off events. [2024-11-16 19:27:32,083 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-16 19:27:32,083 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:27:32,084 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] [2024-11-16 19:27:32,084 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-11-16 19:27:32,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:27:32,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1778633914, now seen corresponding path program 1 times [2024-11-16 19:27:32,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:27:32,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546391168] [2024-11-16 19:27:32,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:27:32,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:27:32,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:27:32,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:27:32,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:27:32,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546391168] [2024-11-16 19:27:32,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546391168] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:27:32,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:27:32,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:27:32,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346642582] [2024-11-16 19:27:32,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:27:32,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 19:27:32,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:27:32,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 19:27:32,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 19:27:32,460 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 64 [2024-11-16 19:27:32,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 54 transitions, 138 flow. Second operand has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:27:32,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:27:32,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 64 [2024-11-16 19:27:32,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:27:33,741 INFO L124 PetriNetUnfolderBase]: 8056/10917 cut-off events. [2024-11-16 19:27:33,742 INFO L125 PetriNetUnfolderBase]: For 681/681 co-relation queries the response was YES. [2024-11-16 19:27:33,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22774 conditions, 10917 events. 8056/10917 cut-off events. For 681/681 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 51610 event pairs, 6946 based on Foata normal form. 1/9788 useless extension candidates. Maximal degree in co-relation 22710. Up to 10883 conditions per place. [2024-11-16 19:27:33,818 INFO L140 encePairwiseOnDemand]: 60/64 looper letters, 44 selfloop transitions, 0 changer transitions 0/50 dead transitions. [2024-11-16 19:27:33,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 50 transitions, 218 flow [2024-11-16 19:27:33,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 19:27:33,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-16 19:27:33,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 68 transitions. [2024-11-16 19:27:33,830 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-11-16 19:27:33,832 INFO L175 Difference]: Start difference. First operand has 57 places, 54 transitions, 138 flow. Second operand 2 states and 68 transitions. [2024-11-16 19:27:33,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 50 transitions, 218 flow [2024-11-16 19:27:33,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 50 transitions, 198 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-16 19:27:33,848 INFO L231 Difference]: Finished difference. Result has 50 places, 50 transitions, 110 flow [2024-11-16 19:27:33,853 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=110, PETRI_PLACES=50, PETRI_TRANSITIONS=50} [2024-11-16 19:27:33,856 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, -7 predicate places. [2024-11-16 19:27:33,856 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 50 transitions, 110 flow [2024-11-16 19:27:33,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:27:33,857 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:27:33,859 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, 1, 1] [2024-11-16 19:27:33,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 19:27:33,860 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-11-16 19:27:33,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:27:33,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1488779836, now seen corresponding path program 1 times [2024-11-16 19:27:33,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:27:33,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798921327] [2024-11-16 19:27:33,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:27:33,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:27:33,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:27:34,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:27:34,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:27:34,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798921327] [2024-11-16 19:27:34,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798921327] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:27:34,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:27:34,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 19:27:34,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912645456] [2024-11-16 19:27:34,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:27:34,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 19:27:34,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:27:34,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 19:27:34,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 19:27:34,104 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 64 [2024-11-16 19:27:34,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 50 transitions, 110 flow. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2024-11-16 19:27:34,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:27:34,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 64 [2024-11-16 19:27:34,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:27:36,163 INFO L124 PetriNetUnfolderBase]: 19637/26492 cut-off events. [2024-11-16 19:27:36,163 INFO L125 PetriNetUnfolderBase]: For 331/331 co-relation queries the response was YES. [2024-11-16 19:27:36,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53477 conditions, 26492 events. 19637/26492 cut-off events. For 331/331 co-relation queries the response was YES. Maximal size of possible extension queue 829. Compared 141879 event pairs, 8966 based on Foata normal form. 1/23649 useless extension candidates. Maximal degree in co-relation 53474. Up to 11200 conditions per place. [2024-11-16 19:27:36,301 INFO L140 encePairwiseOnDemand]: 58/64 looper letters, 108 selfloop transitions, 6 changer transitions 1/121 dead transitions. [2024-11-16 19:27:36,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 121 transitions, 498 flow [2024-11-16 19:27:36,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 19:27:36,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-16 19:27:36,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 156 transitions. [2024-11-16 19:27:36,304 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.609375 [2024-11-16 19:27:36,304 INFO L175 Difference]: Start difference. First operand has 50 places, 50 transitions, 110 flow. Second operand 4 states and 156 transitions. [2024-11-16 19:27:36,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 121 transitions, 498 flow [2024-11-16 19:27:36,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 121 transitions, 498 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-16 19:27:36,310 INFO L231 Difference]: Finished difference. Result has 55 places, 55 transitions, 151 flow [2024-11-16 19:27:36,312 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=151, PETRI_PLACES=55, PETRI_TRANSITIONS=55} [2024-11-16 19:27:36,313 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, -2 predicate places. [2024-11-16 19:27:36,313 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 55 transitions, 151 flow [2024-11-16 19:27:36,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2024-11-16 19:27:36,313 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:27:36,314 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, 1, 1] [2024-11-16 19:27:36,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 19:27:36,314 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-11-16 19:27:36,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:27:36,316 INFO L85 PathProgramCache]: Analyzing trace with hash 881354490, now seen corresponding path program 2 times [2024-11-16 19:27:36,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:27:36,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273614206] [2024-11-16 19:27:36,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:27:36,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:27:36,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:27:36,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:27:36,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:27:36,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273614206] [2024-11-16 19:27:36,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273614206] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:27:36,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:27:36,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 19:27:36,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443724621] [2024-11-16 19:27:36,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:27:36,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 19:27:36,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:27:36,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 19:27:36,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 19:27:36,439 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 64 [2024-11-16 19:27:36,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 55 transitions, 151 flow. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2024-11-16 19:27:36,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:27:36,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 64 [2024-11-16 19:27:36,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:27:39,414 INFO L124 PetriNetUnfolderBase]: 30683/41355 cut-off events. [2024-11-16 19:27:39,415 INFO L125 PetriNetUnfolderBase]: For 4855/4858 co-relation queries the response was YES. [2024-11-16 19:27:39,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89212 conditions, 41355 events. 30683/41355 cut-off events. For 4855/4858 co-relation queries the response was YES. Maximal size of possible extension queue 1177. Compared 230941 event pairs, 10805 based on Foata normal form. 1/36737 useless extension candidates. Maximal degree in co-relation 89206. Up to 20481 conditions per place. [2024-11-16 19:27:39,632 INFO L140 encePairwiseOnDemand]: 58/64 looper letters, 108 selfloop transitions, 10 changer transitions 1/125 dead transitions. [2024-11-16 19:27:39,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 125 transitions, 563 flow [2024-11-16 19:27:39,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 19:27:39,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-16 19:27:39,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 155 transitions. [2024-11-16 19:27:39,635 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.60546875 [2024-11-16 19:27:39,635 INFO L175 Difference]: Start difference. First operand has 55 places, 55 transitions, 151 flow. Second operand 4 states and 155 transitions. [2024-11-16 19:27:39,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 125 transitions, 563 flow [2024-11-16 19:27:39,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 125 transitions, 563 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-16 19:27:39,640 INFO L231 Difference]: Finished difference. Result has 60 places, 61 transitions, 219 flow [2024-11-16 19:27:39,640 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=219, PETRI_PLACES=60, PETRI_TRANSITIONS=61} [2024-11-16 19:27:39,641 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 3 predicate places. [2024-11-16 19:27:39,641 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 61 transitions, 219 flow [2024-11-16 19:27:39,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2024-11-16 19:27:39,642 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:27:39,642 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, 1] [2024-11-16 19:27:39,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 19:27:39,643 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-11-16 19:27:39,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:27:39,643 INFO L85 PathProgramCache]: Analyzing trace with hash 257225176, now seen corresponding path program 1 times [2024-11-16 19:27:39,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:27:39,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596784947] [2024-11-16 19:27:39,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:27:39,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:27:39,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:27:39,855 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:27:39,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:27:39,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596784947] [2024-11-16 19:27:39,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596784947] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:27:39,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:27:39,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 19:27:39,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35193049] [2024-11-16 19:27:39,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:27:39,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:27:39,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:27:39,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:27:39,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:27:39,865 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 64 [2024-11-16 19:27:39,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 61 transitions, 219 flow. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 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) [2024-11-16 19:27:39,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:27:39,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 64 [2024-11-16 19:27:39,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:27:43,869 INFO L124 PetriNetUnfolderBase]: 46892/63487 cut-off events. [2024-11-16 19:27:43,869 INFO L125 PetriNetUnfolderBase]: For 21941/21950 co-relation queries the response was YES. [2024-11-16 19:27:43,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145170 conditions, 63487 events. 46892/63487 cut-off events. For 21941/21950 co-relation queries the response was YES. Maximal size of possible extension queue 1771. Compared 376793 event pairs, 31113 based on Foata normal form. 799/57126 useless extension candidates. Maximal degree in co-relation 145161. Up to 41254 conditions per place. [2024-11-16 19:27:44,179 INFO L140 encePairwiseOnDemand]: 58/64 looper letters, 126 selfloop transitions, 6 changer transitions 1/138 dead transitions. [2024-11-16 19:27:44,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 138 transitions, 734 flow [2024-11-16 19:27:44,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 19:27:44,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 19:27:44,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 170 transitions. [2024-11-16 19:27:44,184 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4427083333333333 [2024-11-16 19:27:44,184 INFO L175 Difference]: Start difference. First operand has 60 places, 61 transitions, 219 flow. Second operand 6 states and 170 transitions. [2024-11-16 19:27:44,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 138 transitions, 734 flow [2024-11-16 19:27:44,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 138 transitions, 726 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-11-16 19:27:44,259 INFO L231 Difference]: Finished difference. Result has 69 places, 66 transitions, 271 flow [2024-11-16 19:27:44,260 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=271, PETRI_PLACES=69, PETRI_TRANSITIONS=66} [2024-11-16 19:27:44,261 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 12 predicate places. [2024-11-16 19:27:44,261 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 66 transitions, 271 flow [2024-11-16 19:27:44,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 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) [2024-11-16 19:27:44,261 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:27:44,261 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, 1] [2024-11-16 19:27:44,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 19:27:44,262 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-11-16 19:27:44,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:27:44,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1389344302, now seen corresponding path program 1 times [2024-11-16 19:27:44,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:27:44,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897195397] [2024-11-16 19:27:44,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:27:44,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:27:44,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:27:44,412 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:27:44,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:27:44,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897195397] [2024-11-16 19:27:44,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897195397] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:27:44,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:27:44,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 19:27:44,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052939259] [2024-11-16 19:27:44,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:27:44,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:27:44,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:27:44,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:27:44,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:27:44,418 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 64 [2024-11-16 19:27:44,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 66 transitions, 271 flow. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 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) [2024-11-16 19:27:44,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:27:44,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 64 [2024-11-16 19:27:44,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:27:47,446 INFO L124 PetriNetUnfolderBase]: 37183/50562 cut-off events. [2024-11-16 19:27:47,446 INFO L125 PetriNetUnfolderBase]: For 20503/20512 co-relation queries the response was YES. [2024-11-16 19:27:47,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115992 conditions, 50562 events. 37183/50562 cut-off events. For 20503/20512 co-relation queries the response was YES. Maximal size of possible extension queue 1314. Compared 289443 event pairs, 30077 based on Foata normal form. 758/45390 useless extension candidates. Maximal degree in co-relation 115978. Up to 41254 conditions per place. [2024-11-16 19:27:47,704 INFO L140 encePairwiseOnDemand]: 57/64 looper letters, 55 selfloop transitions, 2 changer transitions 46/108 dead transitions. [2024-11-16 19:27:47,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 108 transitions, 584 flow [2024-11-16 19:27:47,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 19:27:47,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 19:27:47,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-11-16 19:27:47,706 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-11-16 19:27:47,706 INFO L175 Difference]: Start difference. First operand has 69 places, 66 transitions, 271 flow. Second operand 6 states and 147 transitions. [2024-11-16 19:27:47,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 108 transitions, 584 flow [2024-11-16 19:27:47,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 108 transitions, 582 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-16 19:27:47,719 INFO L231 Difference]: Finished difference. Result has 75 places, 62 transitions, 245 flow [2024-11-16 19:27:47,720 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=245, PETRI_PLACES=75, PETRI_TRANSITIONS=62} [2024-11-16 19:27:47,720 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 18 predicate places. [2024-11-16 19:27:47,721 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 62 transitions, 245 flow [2024-11-16 19:27:47,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 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) [2024-11-16 19:27:47,721 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:27:47,721 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, 1, 1] [2024-11-16 19:27:47,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 19:27:47,722 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-11-16 19:27:47,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:27:47,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1661494841, now seen corresponding path program 1 times [2024-11-16 19:27:47,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:27:47,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441236849] [2024-11-16 19:27:47,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:27:47,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:27:47,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:27:48,207 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:27:48,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:27:48,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441236849] [2024-11-16 19:27:48,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441236849] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:27:48,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248679713] [2024-11-16 19:27:48,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:27:48,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:27:48,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:27:48,211 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) [2024-11-16 19:27:48,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 19:27:48,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:27:48,344 INFO L255 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-16 19:27:48,351 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:27:48,484 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:27:48,484 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:27:48,573 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:27:48,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248679713] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:27:48,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:27:48,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-16 19:27:48,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546663335] [2024-11-16 19:27:48,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:27:48,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-16 19:27:48,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:27:48,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-16 19:27:48,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-11-16 19:27:48,579 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 64 [2024-11-16 19:27:48,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 62 transitions, 245 flow. Second operand has 12 states, 12 states have (on average 13.5) internal successors, (162), 12 states have internal predecessors, (162), 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) [2024-11-16 19:27:48,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:27:48,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 64 [2024-11-16 19:27:48,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:27:52,636 INFO L124 PetriNetUnfolderBase]: 46892/63489 cut-off events. [2024-11-16 19:27:52,636 INFO L125 PetriNetUnfolderBase]: For 30450/30459 co-relation queries the response was YES. [2024-11-16 19:27:52,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150861 conditions, 63489 events. 46892/63489 cut-off events. For 30450/30459 co-relation queries the response was YES. Maximal size of possible extension queue 1771. Compared 381152 event pairs, 24105 based on Foata normal form. 799/57128 useless extension candidates. Maximal degree in co-relation 150845. Up to 30624 conditions per place. [2024-11-16 19:27:52,947 INFO L140 encePairwiseOnDemand]: 57/64 looper letters, 160 selfloop transitions, 8 changer transitions 1/174 dead transitions. [2024-11-16 19:27:52,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 174 transitions, 985 flow [2024-11-16 19:27:52,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 19:27:52,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-16 19:27:52,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 217 transitions. [2024-11-16 19:27:52,949 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.423828125 [2024-11-16 19:27:52,949 INFO L175 Difference]: Start difference. First operand has 75 places, 62 transitions, 245 flow. Second operand 8 states and 217 transitions. [2024-11-16 19:27:52,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 174 transitions, 985 flow [2024-11-16 19:27:53,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 174 transitions, 955 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-11-16 19:27:53,073 INFO L231 Difference]: Finished difference. Result has 75 places, 68 transitions, 300 flow [2024-11-16 19:27:53,074 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=300, PETRI_PLACES=75, PETRI_TRANSITIONS=68} [2024-11-16 19:27:53,076 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 18 predicate places. [2024-11-16 19:27:53,079 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 68 transitions, 300 flow [2024-11-16 19:27:53,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.5) internal successors, (162), 12 states have internal predecessors, (162), 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) [2024-11-16 19:27:53,080 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:27:53,081 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, 1, 1] [2024-11-16 19:27:53,112 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 19:27:53,282 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 [2024-11-16 19:27:53,282 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-11-16 19:27:53,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:27:53,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1836028733, now seen corresponding path program 1 times [2024-11-16 19:27:53,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:27:53,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116324561] [2024-11-16 19:27:53,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:27:53,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:27:53,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:27:53,428 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:27:53,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:27:53,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116324561] [2024-11-16 19:27:53,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116324561] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:27:53,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086507637] [2024-11-16 19:27:53,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:27:53,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:27:53,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:27:53,434 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) [2024-11-16 19:27:53,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 19:27:53,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:27:53,535 INFO L255 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-16 19:27:53,537 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:27:53,624 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:27:53,624 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:27:53,697 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:27:53,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086507637] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:27:53,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:27:53,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-16 19:27:53,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88252772] [2024-11-16 19:27:53,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:27:53,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-16 19:27:53,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:27:53,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-16 19:27:53,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-11-16 19:27:53,703 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 64 [2024-11-16 19:27:53,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 68 transitions, 300 flow. Second operand has 12 states, 12 states have (on average 14.5) internal successors, (174), 12 states have internal predecessors, (174), 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) [2024-11-16 19:27:53,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:27:53,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 64 [2024-11-16 19:27:53,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:27:57,046 INFO L124 PetriNetUnfolderBase]: 36481/49862 cut-off events. [2024-11-16 19:27:57,046 INFO L125 PetriNetUnfolderBase]: For 24096/24105 co-relation queries the response was YES. [2024-11-16 19:27:57,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119529 conditions, 49862 events. 36481/49862 cut-off events. For 24096/24105 co-relation queries the response was YES. Maximal size of possible extension queue 1314. Compared 289960 event pairs, 17518 based on Foata normal form. 1460/45392 useless extension candidates. Maximal degree in co-relation 119513. Up to 21142 conditions per place. [2024-11-16 19:27:57,288 INFO L140 encePairwiseOnDemand]: 55/64 looper letters, 85 selfloop transitions, 5 changer transitions 48/143 dead transitions. [2024-11-16 19:27:57,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 143 transitions, 829 flow [2024-11-16 19:27:57,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 19:27:57,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-16 19:27:57,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-11-16 19:27:57,290 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-11-16 19:27:57,290 INFO L175 Difference]: Start difference. First operand has 75 places, 68 transitions, 300 flow. Second operand 8 states and 192 transitions. [2024-11-16 19:27:57,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 143 transitions, 829 flow [2024-11-16 19:27:57,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 143 transitions, 823 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-16 19:27:57,303 INFO L231 Difference]: Finished difference. Result has 85 places, 65 transitions, 290 flow [2024-11-16 19:27:57,304 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=290, PETRI_PLACES=85, PETRI_TRANSITIONS=65} [2024-11-16 19:27:57,304 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 28 predicate places. [2024-11-16 19:27:57,304 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 65 transitions, 290 flow [2024-11-16 19:27:57,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.5) internal successors, (174), 12 states have internal predecessors, (174), 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) [2024-11-16 19:27:57,304 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:27:57,305 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 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] [2024-11-16 19:27:57,317 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 19:27:57,505 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 [2024-11-16 19:27:57,505 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-11-16 19:27:57,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:27:57,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1263205830, now seen corresponding path program 2 times [2024-11-16 19:27:57,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:27:57,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613853938] [2024-11-16 19:27:57,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:27:57,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:27:57,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:27:57,662 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:27:57,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:27:57,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613853938] [2024-11-16 19:27:57,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613853938] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:27:57,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358174256] [2024-11-16 19:27:57,664 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 19:27:57,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:27:57,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:27:57,669 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) [2024-11-16 19:27:57,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 19:27:57,766 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 19:27:57,766 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:27:57,767 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-16 19:27:57,768 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:27:57,889 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:27:57,889 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:27:57,973 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:27:57,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358174256] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:27:57,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:27:57,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-16 19:27:57,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144613063] [2024-11-16 19:27:57,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:27:57,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-16 19:27:57,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:27:57,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-16 19:27:57,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-16 19:27:57,980 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 64 [2024-11-16 19:27:57,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 65 transitions, 290 flow. Second operand has 12 states, 12 states have (on average 15.25) internal successors, (183), 12 states have internal predecessors, (183), 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) [2024-11-16 19:27:57,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:27:57,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 64 [2024-11-16 19:27:57,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:28:00,048 INFO L124 PetriNetUnfolderBase]: 23295/31556 cut-off events. [2024-11-16 19:28:00,048 INFO L125 PetriNetUnfolderBase]: For 26095/26104 co-relation queries the response was YES. [2024-11-16 19:28:00,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85053 conditions, 31556 events. 23295/31556 cut-off events. For 26095/26104 co-relation queries the response was YES. Maximal size of possible extension queue 838. Compared 170505 event pairs, 11753 based on Foata normal form. 830/28809 useless extension candidates. Maximal degree in co-relation 85033. Up to 24876 conditions per place. [2024-11-16 19:28:00,532 INFO L140 encePairwiseOnDemand]: 56/64 looper letters, 76 selfloop transitions, 8 changer transitions 0/89 dead transitions. [2024-11-16 19:28:00,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 89 transitions, 546 flow [2024-11-16 19:28:00,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 19:28:00,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-16 19:28:00,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-11-16 19:28:00,533 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.29910714285714285 [2024-11-16 19:28:00,533 INFO L175 Difference]: Start difference. First operand has 85 places, 65 transitions, 290 flow. Second operand 7 states and 134 transitions. [2024-11-16 19:28:00,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 89 transitions, 546 flow [2024-11-16 19:28:00,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 89 transitions, 498 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-11-16 19:28:00,612 INFO L231 Difference]: Finished difference. Result has 76 places, 67 transitions, 292 flow [2024-11-16 19:28:00,613 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=292, PETRI_PLACES=76, PETRI_TRANSITIONS=67} [2024-11-16 19:28:00,613 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 19 predicate places. [2024-11-16 19:28:00,614 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 67 transitions, 292 flow [2024-11-16 19:28:00,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 15.25) internal successors, (183), 12 states have internal predecessors, (183), 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) [2024-11-16 19:28:00,614 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:28:00,614 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 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] [2024-11-16 19:28:00,644 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 19:28:00,815 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 [2024-11-16 19:28:00,816 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-11-16 19:28:00,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:28:00,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1450693124, now seen corresponding path program 1 times [2024-11-16 19:28:00,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:28:00,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114837255] [2024-11-16 19:28:00,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:28:00,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:28:00,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:28:00,982 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:28:00,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:28:00,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114837255] [2024-11-16 19:28:00,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114837255] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:28:00,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891727930] [2024-11-16 19:28:00,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:28:00,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:28:00,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:28:00,989 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) [2024-11-16 19:28:00,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 19:28:01,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:28:01,092 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-16 19:28:01,094 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:28:01,180 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:28:01,181 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:28:01,282 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:28:01,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891727930] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 19:28:01,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 19:28:01,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2024-11-16 19:28:01,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010341184] [2024-11-16 19:28:01,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:28:01,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 19:28:01,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:28:01,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 19:28:01,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-16 19:28:01,287 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 64 [2024-11-16 19:28:01,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 67 transitions, 292 flow. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:28:01,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:28:01,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 64 [2024-11-16 19:28:01,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:28:02,957 INFO L124 PetriNetUnfolderBase]: 19893/26925 cut-off events. [2024-11-16 19:28:02,957 INFO L125 PetriNetUnfolderBase]: For 18261/18270 co-relation queries the response was YES. [2024-11-16 19:28:03,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70458 conditions, 26925 events. 19893/26925 cut-off events. For 18261/18270 co-relation queries the response was YES. Maximal size of possible extension queue 682. Compared 142129 event pairs, 11581 based on Foata normal form. 589/24349 useless extension candidates. Maximal degree in co-relation 70443. Up to 17847 conditions per place. [2024-11-16 19:28:03,090 INFO L140 encePairwiseOnDemand]: 59/64 looper letters, 95 selfloop transitions, 6 changer transitions 1/107 dead transitions. [2024-11-16 19:28:03,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 107 transitions, 655 flow [2024-11-16 19:28:03,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 19:28:03,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 19:28:03,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 134 transitions. [2024-11-16 19:28:03,092 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3489583333333333 [2024-11-16 19:28:03,092 INFO L175 Difference]: Start difference. First operand has 76 places, 67 transitions, 292 flow. Second operand 6 states and 134 transitions. [2024-11-16 19:28:03,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 107 transitions, 655 flow [2024-11-16 19:28:03,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 107 transitions, 624 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-11-16 19:28:03,107 INFO L231 Difference]: Finished difference. Result has 77 places, 68 transitions, 293 flow [2024-11-16 19:28:03,107 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=293, PETRI_PLACES=77, PETRI_TRANSITIONS=68} [2024-11-16 19:28:03,108 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 20 predicate places. [2024-11-16 19:28:03,108 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 68 transitions, 293 flow [2024-11-16 19:28:03,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:28:03,108 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:28:03,108 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 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, 1] [2024-11-16 19:28:03,120 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-16 19:28:03,308 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 [2024-11-16 19:28:03,309 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-11-16 19:28:03,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:28:03,309 INFO L85 PathProgramCache]: Analyzing trace with hash 842032226, now seen corresponding path program 1 times [2024-11-16 19:28:03,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:28:03,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050010236] [2024-11-16 19:28:03,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:28:03,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:28:03,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:28:03,962 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:28:03,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:28:03,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050010236] [2024-11-16 19:28:03,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050010236] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:28:03,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956115422] [2024-11-16 19:28:03,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:28:03,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:28:03,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:28:03,964 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) [2024-11-16 19:28:03,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 19:28:04,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:28:04,061 INFO L255 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-16 19:28:04,063 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:28:04,211 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 [2024-11-16 19:28:04,235 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 19:28:04,236 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:28:04,333 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 19:28:04,334 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 [2024-11-16 19:28:04,349 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 19:28:04,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956115422] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:28:04,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:28:04,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 19 [2024-11-16 19:28:04,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438330568] [2024-11-16 19:28:04,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:28:04,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-16 19:28:04,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:28:04,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-16 19:28:04,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2024-11-16 19:28:04,370 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 64 [2024-11-16 19:28:04,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 68 transitions, 293 flow. Second operand has 19 states, 19 states have (on average 14.210526315789474) internal successors, (270), 19 states have internal predecessors, (270), 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) [2024-11-16 19:28:04,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:28:04,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 64 [2024-11-16 19:28:04,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:28:08,012 INFO L124 PetriNetUnfolderBase]: 36133/48843 cut-off events. [2024-11-16 19:28:08,012 INFO L125 PetriNetUnfolderBase]: For 30530/30539 co-relation queries the response was YES. [2024-11-16 19:28:08,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125579 conditions, 48843 events. 36133/48843 cut-off events. For 30530/30539 co-relation queries the response was YES. Maximal size of possible extension queue 1027. Compared 276603 event pairs, 10516 based on Foata normal form. 1/43118 useless extension candidates. Maximal degree in co-relation 125563. Up to 15771 conditions per place. [2024-11-16 19:28:08,411 INFO L140 encePairwiseOnDemand]: 52/64 looper letters, 266 selfloop transitions, 28 changer transitions 3/303 dead transitions. [2024-11-16 19:28:08,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 303 transitions, 1670 flow [2024-11-16 19:28:08,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-16 19:28:08,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-16 19:28:08,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 406 transitions. [2024-11-16 19:28:08,413 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.453125 [2024-11-16 19:28:08,413 INFO L175 Difference]: Start difference. First operand has 77 places, 68 transitions, 293 flow. Second operand 14 states and 406 transitions. [2024-11-16 19:28:08,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 303 transitions, 1670 flow [2024-11-16 19:28:08,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 303 transitions, 1660 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-16 19:28:08,490 INFO L231 Difference]: Finished difference. Result has 90 places, 83 transitions, 467 flow [2024-11-16 19:28:08,490 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=467, PETRI_PLACES=90, PETRI_TRANSITIONS=83} [2024-11-16 19:28:08,491 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 33 predicate places. [2024-11-16 19:28:08,491 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 83 transitions, 467 flow [2024-11-16 19:28:08,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 14.210526315789474) internal successors, (270), 19 states have internal predecessors, (270), 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) [2024-11-16 19:28:08,491 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:28:08,492 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 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, 1] [2024-11-16 19:28:08,504 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-16 19:28:08,692 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 [2024-11-16 19:28:08,693 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-11-16 19:28:08,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:28:08,693 INFO L85 PathProgramCache]: Analyzing trace with hash 453048140, now seen corresponding path program 2 times [2024-11-16 19:28:08,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:28:08,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613712861] [2024-11-16 19:28:08,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:28:08,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:28:08,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:28:09,548 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:28:09,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:28:09,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613712861] [2024-11-16 19:28:09,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613712861] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:28:09,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287786540] [2024-11-16 19:28:09,550 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 19:28:09,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:28:09,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:28:09,552 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) [2024-11-16 19:28:09,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 19:28:09,667 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 19:28:09,667 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:28:09,669 INFO L255 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-16 19:28:09,672 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:28:10,169 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 19:28:10,170 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 23 treesize of output 15 [2024-11-16 19:28:10,313 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:28:10,314 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:28:10,763 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 19:28:10,763 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 21 treesize of output 14 [2024-11-16 19:28:11,147 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:28:11,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287786540] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:28:11,148 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:28:11,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 30 [2024-11-16 19:28:11,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252082688] [2024-11-16 19:28:11,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:28:11,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-16 19:28:11,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:28:11,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-16 19:28:11,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=814, Unknown=0, NotChecked=0, Total=930 [2024-11-16 19:28:11,152 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 64 [2024-11-16 19:28:11,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 83 transitions, 467 flow. Second operand has 31 states, 31 states have (on average 12.774193548387096) internal successors, (396), 31 states have internal predecessors, (396), 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) [2024-11-16 19:28:11,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:28:11,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 64 [2024-11-16 19:28:11,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand