./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/parallel-barrier.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/parallel-barrier.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 504de2e820c504d0b98f5b71c19407f1b43c0dd9338639fad4f2fe6ea2f6854f --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 16:43:46,167 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 16:43:46,218 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 16:43:46,221 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 16:43:46,222 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 16:43:46,239 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 16:43:46,240 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 16:43:46,241 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 16:43:46,241 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 16:43:46,244 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 16:43:46,244 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 16:43:46,245 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 16:43:46,245 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 16:43:46,246 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 16:43:46,246 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 16:43:46,247 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 16:43:46,247 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 16:43:46,247 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 16:43:46,247 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 16:43:46,247 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 16:43:46,247 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 16:43:46,248 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 16:43:46,248 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 16:43:46,248 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 16:43:46,248 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 16:43:46,248 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 16:43:46,249 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 16:43:46,249 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 16:43:46,249 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 16:43:46,249 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 16:43:46,250 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 16:43:46,250 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 16:43:46,251 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 16:43:46,251 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 16:43:46,251 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 16:43:46,251 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 16:43:46,251 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 16:43:46,251 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 16:43:46,251 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 16:43:46,251 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 16:43:46,252 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 16:43:46,252 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 16:43:46,252 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 16:43:46,252 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 504de2e820c504d0b98f5b71c19407f1b43c0dd9338639fad4f2fe6ea2f6854f [2024-06-27 16:43:46,432 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 16:43:46,454 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 16:43:46,457 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 16:43:46,458 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 16:43:46,459 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 16:43:46,460 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-barrier.wvr.c [2024-06-27 16:43:47,429 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 16:43:47,609 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 16:43:47,610 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-barrier.wvr.c [2024-06-27 16:43:47,619 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0079e88c/16d1c31d8c0f4865ac6b153d7d00911b/FLAGd71a8becb [2024-06-27 16:43:47,630 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0079e88c/16d1c31d8c0f4865ac6b153d7d00911b [2024-06-27 16:43:47,632 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 16:43:47,633 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-06-27 16:43:47,633 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 16:43:47,634 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 16:43:47,640 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 16:43:47,640 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 04:43:47" (1/1) ... [2024-06-27 16:43:47,641 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@797d06f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:43:47, skipping insertion in model container [2024-06-27 16:43:47,641 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 04:43:47" (1/1) ... [2024-06-27 16:43:47,661 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 16:43:47,801 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-barrier.wvr.c[4800,4813] [2024-06-27 16:43:47,804 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 16:43:47,811 INFO L202 MainTranslator]: Completed pre-run [2024-06-27 16:43:47,834 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-barrier.wvr.c[4800,4813] [2024-06-27 16:43:47,838 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 16:43:47,851 INFO L206 MainTranslator]: Completed translation [2024-06-27 16:43:47,852 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:43:47 WrapperNode [2024-06-27 16:43:47,853 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 16:43:47,854 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 16:43:47,854 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 16:43:47,854 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 16:43:47,860 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:43:47" (1/1) ... [2024-06-27 16:43:47,867 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:43:47" (1/1) ... [2024-06-27 16:43:47,888 INFO L138 Inliner]: procedures = 24, calls = 68, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 238 [2024-06-27 16:43:47,888 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 16:43:47,889 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 16:43:47,889 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 16:43:47,889 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 16:43:47,897 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:43:47" (1/1) ... [2024-06-27 16:43:47,898 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:43:47" (1/1) ... [2024-06-27 16:43:47,901 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:43:47" (1/1) ... [2024-06-27 16:43:47,917 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 16:43:47,917 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:43:47" (1/1) ... [2024-06-27 16:43:47,917 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:43:47" (1/1) ... [2024-06-27 16:43:47,922 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:43:47" (1/1) ... [2024-06-27 16:43:47,923 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:43:47" (1/1) ... [2024-06-27 16:43:47,925 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:43:47" (1/1) ... [2024-06-27 16:43:47,926 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:43:47" (1/1) ... [2024-06-27 16:43:47,928 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 16:43:47,928 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 16:43:47,928 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 16:43:47,928 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 16:43:47,929 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:43:47" (1/1) ... [2024-06-27 16:43:47,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 16:43:47,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:43:47,956 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 16:43:47,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 16:43:47,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 16:43:47,993 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-27 16:43:47,993 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-27 16:43:47,993 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-27 16:43:47,993 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-27 16:43:47,993 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-06-27 16:43:47,993 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-06-27 16:43:47,993 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-06-27 16:43:47,993 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-06-27 16:43:47,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 16:43:47,994 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2024-06-27 16:43:47,994 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2024-06-27 16:43:47,994 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2024-06-27 16:43:47,994 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2024-06-27 16:43:47,994 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 16:43:47,994 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 16:43:47,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 16:43:47,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 16:43:47,996 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 16:43:48,108 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 16:43:48,110 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 16:43:48,324 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 16:43:48,324 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 16:43:48,498 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 16:43:48,499 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 16:43:48,499 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:43:48 BoogieIcfgContainer [2024-06-27 16:43:48,499 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 16:43:48,501 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 16:43:48,502 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 16:43:48,504 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 16:43:48,504 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 04:43:47" (1/3) ... [2024-06-27 16:43:48,505 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ee20ee6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 04:43:48, skipping insertion in model container [2024-06-27 16:43:48,505 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:43:47" (2/3) ... [2024-06-27 16:43:48,506 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ee20ee6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 04:43:48, skipping insertion in model container [2024-06-27 16:43:48,506 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:43:48" (3/3) ... [2024-06-27 16:43:48,507 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-barrier.wvr.c [2024-06-27 16:43:48,513 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-06-27 16:43:48,520 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 16:43:48,520 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-06-27 16:43:48,520 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 16:43:48,605 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2024-06-27 16:43:48,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 74 transitions, 214 flow [2024-06-27 16:43:48,676 INFO L124 PetriNetUnfolderBase]: 4/62 cut-off events. [2024-06-27 16:43:48,676 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-27 16:43:48,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 62 events. 4/62 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 140 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 73. Up to 3 conditions per place. [2024-06-27 16:43:48,681 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 74 transitions, 214 flow [2024-06-27 16:43:48,688 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 61 transitions, 170 flow [2024-06-27 16:43:48,699 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 16:43:48,704 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4214b0c1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 16:43:48,704 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-06-27 16:43:48,728 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 16:43:48,728 INFO L124 PetriNetUnfolderBase]: 4/60 cut-off events. [2024-06-27 16:43:48,728 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-27 16:43:48,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:43:48,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:43:48,730 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2024-06-27 16:43:48,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:43:48,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1004146585, now seen corresponding path program 1 times [2024-06-27 16:43:48,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:43:48,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298458659] [2024-06-27 16:43:48,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:43:48,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:43:48,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:43:49,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:43:49,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:43:49,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298458659] [2024-06-27 16:43:49,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298458659] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:43:49,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:43:49,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 16:43:49,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429721151] [2024-06-27 16:43:49,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:43:49,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 16:43:49,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:43:49,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 16:43:49,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 16:43:49,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 78 [2024-06-27 16:43:49,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 61 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:43:49,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:43:49,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 78 [2024-06-27 16:43:49,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:43:50,206 INFO L124 PetriNetUnfolderBase]: 6924/10951 cut-off events. [2024-06-27 16:43:50,207 INFO L125 PetriNetUnfolderBase]: For 1451/1451 co-relation queries the response was YES. [2024-06-27 16:43:50,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22549 conditions, 10951 events. 6924/10951 cut-off events. For 1451/1451 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 76954 event pairs, 4739 based on Foata normal form. 64/9611 useless extension candidates. Maximal degree in co-relation 22308. Up to 8154 conditions per place. [2024-06-27 16:43:50,321 INFO L140 encePairwiseOnDemand]: 75/78 looper letters, 55 selfloop transitions, 2 changer transitions 0/81 dead transitions. [2024-06-27 16:43:50,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 81 transitions, 348 flow [2024-06-27 16:43:50,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 16:43:50,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 16:43:50,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 148 transitions. [2024-06-27 16:43:50,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6324786324786325 [2024-06-27 16:43:50,334 INFO L175 Difference]: Start difference. First operand has 76 places, 61 transitions, 170 flow. Second operand 3 states and 148 transitions. [2024-06-27 16:43:50,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 81 transitions, 348 flow [2024-06-27 16:43:50,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 81 transitions, 300 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-06-27 16:43:50,364 INFO L231 Difference]: Finished difference. Result has 67 places, 61 transitions, 146 flow [2024-06-27 16:43:50,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=67, PETRI_TRANSITIONS=61} [2024-06-27 16:43:50,368 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -9 predicate places. [2024-06-27 16:43:50,369 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 61 transitions, 146 flow [2024-06-27 16:43:50,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:43:50,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:43:50,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:43:50,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 16:43:50,370 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2024-06-27 16:43:50,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:43:50,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1302936679, now seen corresponding path program 2 times [2024-06-27 16:43:50,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:43:50,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40489930] [2024-06-27 16:43:50,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:43:50,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:43:50,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:43:50,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:43:50,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:43:50,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40489930] [2024-06-27 16:43:50,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40489930] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:43:50,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:43:50,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 16:43:50,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191839606] [2024-06-27 16:43:50,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:43:50,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 16:43:50,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:43:50,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 16:43:50,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 16:43:50,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 78 [2024-06-27 16:43:50,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 61 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:43:50,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:43:50,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 78 [2024-06-27 16:43:50,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:43:51,223 INFO L124 PetriNetUnfolderBase]: 5675/9003 cut-off events. [2024-06-27 16:43:51,224 INFO L125 PetriNetUnfolderBase]: For 923/923 co-relation queries the response was YES. [2024-06-27 16:43:51,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17458 conditions, 9003 events. 5675/9003 cut-off events. For 923/923 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 60616 event pairs, 3936 based on Foata normal form. 63/8084 useless extension candidates. Maximal degree in co-relation 16016. Up to 6533 conditions per place. [2024-06-27 16:43:51,275 INFO L140 encePairwiseOnDemand]: 75/78 looper letters, 52 selfloop transitions, 2 changer transitions 0/78 dead transitions. [2024-06-27 16:43:51,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 78 transitions, 300 flow [2024-06-27 16:43:51,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 16:43:51,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 16:43:51,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 145 transitions. [2024-06-27 16:43:51,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6196581196581197 [2024-06-27 16:43:51,282 INFO L175 Difference]: Start difference. First operand has 67 places, 61 transitions, 146 flow. Second operand 3 states and 145 transitions. [2024-06-27 16:43:51,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 78 transitions, 300 flow [2024-06-27 16:43:51,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 78 transitions, 294 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 16:43:51,285 INFO L231 Difference]: Finished difference. Result has 68 places, 61 transitions, 150 flow [2024-06-27 16:43:51,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=68, PETRI_TRANSITIONS=61} [2024-06-27 16:43:51,286 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -8 predicate places. [2024-06-27 16:43:51,286 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 61 transitions, 150 flow [2024-06-27 16:43:51,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:43:51,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:43:51,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:43:51,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 16:43:51,288 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2024-06-27 16:43:51,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:43:51,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1020179123, now seen corresponding path program 3 times [2024-06-27 16:43:51,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:43:51,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383702763] [2024-06-27 16:43:51,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:43:51,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:43:51,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:43:51,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:43:51,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:43:51,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383702763] [2024-06-27 16:43:51,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383702763] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:43:51,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:43:51,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 16:43:51,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751231753] [2024-06-27 16:43:51,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:43:51,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 16:43:51,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:43:51,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 16:43:51,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 16:43:51,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 78 [2024-06-27 16:43:51,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 61 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:43:51,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:43:51,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 78 [2024-06-27 16:43:51,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:43:51,921 INFO L124 PetriNetUnfolderBase]: 4906/7355 cut-off events. [2024-06-27 16:43:51,921 INFO L125 PetriNetUnfolderBase]: For 1156/1156 co-relation queries the response was YES. [2024-06-27 16:43:51,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15027 conditions, 7355 events. 4906/7355 cut-off events. For 1156/1156 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 42219 event pairs, 2954 based on Foata normal form. 126/6853 useless extension candidates. Maximal degree in co-relation 6295. Up to 5656 conditions per place. [2024-06-27 16:43:51,959 INFO L140 encePairwiseOnDemand]: 75/78 looper letters, 53 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2024-06-27 16:43:51,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 79 transitions, 308 flow [2024-06-27 16:43:51,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 16:43:51,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 16:43:51,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 146 transitions. [2024-06-27 16:43:51,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6239316239316239 [2024-06-27 16:43:51,961 INFO L175 Difference]: Start difference. First operand has 68 places, 61 transitions, 150 flow. Second operand 3 states and 146 transitions. [2024-06-27 16:43:51,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 79 transitions, 308 flow [2024-06-27 16:43:51,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 79 transitions, 302 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 16:43:51,964 INFO L231 Difference]: Finished difference. Result has 69 places, 61 transitions, 154 flow [2024-06-27 16:43:51,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=69, PETRI_TRANSITIONS=61} [2024-06-27 16:43:51,965 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -7 predicate places. [2024-06-27 16:43:51,966 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 61 transitions, 154 flow [2024-06-27 16:43:51,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:43:51,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:43:51,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:43:51,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 16:43:51,967 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2024-06-27 16:43:51,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:43:51,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1937487997, now seen corresponding path program 4 times [2024-06-27 16:43:51,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:43:51,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592360978] [2024-06-27 16:43:51,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:43:51,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:43:51,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:43:52,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:43:52,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:43:52,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592360978] [2024-06-27 16:43:52,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592360978] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:43:52,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:43:52,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 16:43:52,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761194694] [2024-06-27 16:43:52,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:43:52,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 16:43:52,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:43:52,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 16:43:52,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 16:43:52,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 78 [2024-06-27 16:43:52,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 61 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:43:52,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:43:52,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 78 [2024-06-27 16:43:52,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:43:52,712 INFO L124 PetriNetUnfolderBase]: 5261/8245 cut-off events. [2024-06-27 16:43:52,712 INFO L125 PetriNetUnfolderBase]: For 1807/1813 co-relation queries the response was YES. [2024-06-27 16:43:52,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16935 conditions, 8245 events. 5261/8245 cut-off events. For 1807/1813 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 52558 event pairs, 3600 based on Foata normal form. 58/7260 useless extension candidates. Maximal degree in co-relation 7104. Up to 6129 conditions per place. [2024-06-27 16:43:52,737 INFO L140 encePairwiseOnDemand]: 75/78 looper letters, 54 selfloop transitions, 2 changer transitions 0/80 dead transitions. [2024-06-27 16:43:52,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 80 transitions, 320 flow [2024-06-27 16:43:52,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 16:43:52,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 16:43:52,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 147 transitions. [2024-06-27 16:43:52,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6282051282051282 [2024-06-27 16:43:52,739 INFO L175 Difference]: Start difference. First operand has 69 places, 61 transitions, 154 flow. Second operand 3 states and 147 transitions. [2024-06-27 16:43:52,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 80 transitions, 320 flow [2024-06-27 16:43:52,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 80 transitions, 314 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 16:43:52,741 INFO L231 Difference]: Finished difference. Result has 70 places, 61 transitions, 158 flow [2024-06-27 16:43:52,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=70, PETRI_TRANSITIONS=61} [2024-06-27 16:43:52,743 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -6 predicate places. [2024-06-27 16:43:52,743 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 61 transitions, 158 flow [2024-06-27 16:43:52,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:43:52,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:43:52,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:43:52,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 16:43:52,744 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2024-06-27 16:43:52,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:43:52,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1866415576, now seen corresponding path program 1 times [2024-06-27 16:43:52,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:43:52,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863407347] [2024-06-27 16:43:52,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:43:52,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:43:52,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:43:53,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:43:53,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:43:53,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863407347] [2024-06-27 16:43:53,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863407347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:43:53,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:43:53,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-06-27 16:43:53,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047846772] [2024-06-27 16:43:53,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:43:53,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-06-27 16:43:53,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:43:53,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-06-27 16:43:53,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2024-06-27 16:43:53,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 78 [2024-06-27 16:43:53,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 61 transitions, 158 flow. Second operand has 17 states, 17 states have (on average 17.823529411764707) internal successors, (303), 17 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:43:53,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:43:53,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 78 [2024-06-27 16:43:53,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:43:58,406 INFO L124 PetriNetUnfolderBase]: 57182/74439 cut-off events. [2024-06-27 16:43:58,407 INFO L125 PetriNetUnfolderBase]: For 10403/10403 co-relation queries the response was YES. [2024-06-27 16:43:58,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159001 conditions, 74439 events. 57182/74439 cut-off events. For 10403/10403 co-relation queries the response was YES. Maximal size of possible extension queue 1173. Compared 376968 event pairs, 21658 based on Foata normal form. 1/72206 useless extension candidates. Maximal degree in co-relation 69913. Up to 60973 conditions per place. [2024-06-27 16:43:58,749 INFO L140 encePairwiseOnDemand]: 60/78 looper letters, 239 selfloop transitions, 70 changer transitions 34/352 dead transitions. [2024-06-27 16:43:58,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 352 transitions, 1535 flow [2024-06-27 16:43:58,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-06-27 16:43:58,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-06-27 16:43:58,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 734 transitions. [2024-06-27 16:43:58,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619329388560158 [2024-06-27 16:43:58,753 INFO L175 Difference]: Start difference. First operand has 70 places, 61 transitions, 158 flow. Second operand 26 states and 734 transitions. [2024-06-27 16:43:58,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 352 transitions, 1535 flow [2024-06-27 16:43:58,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 352 transitions, 1529 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 16:43:58,771 INFO L231 Difference]: Finished difference. Result has 104 places, 130 transitions, 523 flow [2024-06-27 16:43:58,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=523, PETRI_PLACES=104, PETRI_TRANSITIONS=130} [2024-06-27 16:43:58,776 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 28 predicate places. [2024-06-27 16:43:58,776 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 130 transitions, 523 flow [2024-06-27 16:43:58,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 17.823529411764707) internal successors, (303), 17 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:43:58,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:43:58,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:43:58,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 16:43:58,777 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2024-06-27 16:43:58,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:43:58,778 INFO L85 PathProgramCache]: Analyzing trace with hash 2135214947, now seen corresponding path program 5 times [2024-06-27 16:43:58,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:43:58,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095403974] [2024-06-27 16:43:58,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:43:58,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:43:58,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:43:59,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:43:59,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:43:59,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095403974] [2024-06-27 16:43:59,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095403974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:43:59,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:43:59,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-06-27 16:43:59,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119247312] [2024-06-27 16:43:59,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:43:59,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-06-27 16:43:59,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:43:59,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-06-27 16:43:59,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2024-06-27 16:43:59,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 78 [2024-06-27 16:43:59,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 130 transitions, 523 flow. Second operand has 17 states, 17 states have (on average 17.823529411764707) internal successors, (303), 17 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:43:59,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:43:59,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 78 [2024-06-27 16:43:59,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:44:09,571 INFO L124 PetriNetUnfolderBase]: 95910/124073 cut-off events. [2024-06-27 16:44:09,571 INFO L125 PetriNetUnfolderBase]: For 104998/104998 co-relation queries the response was YES. [2024-06-27 16:44:09,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 333123 conditions, 124073 events. 95910/124073 cut-off events. For 104998/104998 co-relation queries the response was YES. Maximal size of possible extension queue 1938. Compared 662065 event pairs, 24648 based on Foata normal form. 2/120541 useless extension candidates. Maximal degree in co-relation 333097. Up to 76682 conditions per place. [2024-06-27 16:44:10,369 INFO L140 encePairwiseOnDemand]: 60/78 looper letters, 719 selfloop transitions, 305 changer transitions 80/1113 dead transitions. [2024-06-27 16:44:10,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 1113 transitions, 6130 flow [2024-06-27 16:44:10,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2024-06-27 16:44:10,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2024-06-27 16:44:10,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 2339 transitions. [2024-06-27 16:44:10,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3446802239905688 [2024-06-27 16:44:10,382 INFO L175 Difference]: Start difference. First operand has 104 places, 130 transitions, 523 flow. Second operand 87 states and 2339 transitions. [2024-06-27 16:44:10,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 1113 transitions, 6130 flow [2024-06-27 16:44:10,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 1113 transitions, 6126 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-27 16:44:10,795 INFO L231 Difference]: Finished difference. Result has 204 places, 471 transitions, 3058 flow [2024-06-27 16:44:10,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=87, PETRI_FLOW=3058, PETRI_PLACES=204, PETRI_TRANSITIONS=471} [2024-06-27 16:44:10,798 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 128 predicate places. [2024-06-27 16:44:10,798 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 471 transitions, 3058 flow [2024-06-27 16:44:10,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 17.823529411764707) internal successors, (303), 17 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:44:10,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:44:10,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:44:10,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 16:44:10,799 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2024-06-27 16:44:10,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:44:10,799 INFO L85 PathProgramCache]: Analyzing trace with hash 394257695, now seen corresponding path program 6 times [2024-06-27 16:44:10,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:44:10,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187333421] [2024-06-27 16:44:10,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:44:10,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:44:10,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:44:11,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:44:11,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:44:11,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187333421] [2024-06-27 16:44:11,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187333421] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:44:11,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:44:11,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-06-27 16:44:11,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077530221] [2024-06-27 16:44:11,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:44:11,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-06-27 16:44:11,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:44:11,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-06-27 16:44:11,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2024-06-27 16:44:11,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 78 [2024-06-27 16:44:11,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 471 transitions, 3058 flow. Second operand has 17 states, 17 states have (on average 17.823529411764707) internal successors, (303), 17 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:44:11,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:44:11,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 78 [2024-06-27 16:44:11,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:44:26,005 INFO L124 PetriNetUnfolderBase]: 118280/152999 cut-off events. [2024-06-27 16:44:26,005 INFO L125 PetriNetUnfolderBase]: For 266385/266409 co-relation queries the response was YES. [2024-06-27 16:44:26,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 486059 conditions, 152999 events. 118280/152999 cut-off events. For 266385/266409 co-relation queries the response was YES. Maximal size of possible extension queue 2470. Compared 839479 event pairs, 33089 based on Foata normal form. 25/149000 useless extension candidates. Maximal degree in co-relation 486009. Up to 120432 conditions per place. [2024-06-27 16:44:27,383 INFO L140 encePairwiseOnDemand]: 60/78 looper letters, 787 selfloop transitions, 193 changer transitions 61/1050 dead transitions. [2024-06-27 16:44:27,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 1050 transitions, 7783 flow [2024-06-27 16:44:27,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-06-27 16:44:27,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2024-06-27 16:44:27,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 1303 transitions. [2024-06-27 16:44:27,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36315496098104794 [2024-06-27 16:44:27,386 INFO L175 Difference]: Start difference. First operand has 204 places, 471 transitions, 3058 flow. Second operand 46 states and 1303 transitions. [2024-06-27 16:44:27,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 1050 transitions, 7783 flow [2024-06-27 16:44:42,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 1050 transitions, 6800 flow, removed 474 selfloop flow, removed 3 redundant places. [2024-06-27 16:44:42,152 INFO L231 Difference]: Finished difference. Result has 262 places, 642 transitions, 4058 flow [2024-06-27 16:44:42,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=2152, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=4058, PETRI_PLACES=262, PETRI_TRANSITIONS=642} [2024-06-27 16:44:42,153 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 186 predicate places. [2024-06-27 16:44:42,153 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 642 transitions, 4058 flow [2024-06-27 16:44:42,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 17.823529411764707) internal successors, (303), 17 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:44:42,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:44:42,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:44:42,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 16:44:42,153 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2024-06-27 16:44:42,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:44:42,154 INFO L85 PathProgramCache]: Analyzing trace with hash 263093935, now seen corresponding path program 7 times [2024-06-27 16:44:42,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:44:42,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457280863] [2024-06-27 16:44:42,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:44:42,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:44:42,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:44:42,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:44:42,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:44:42,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457280863] [2024-06-27 16:44:42,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457280863] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:44:42,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:44:42,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-06-27 16:44:42,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097012116] [2024-06-27 16:44:42,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:44:42,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-06-27 16:44:42,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:44:42,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-06-27 16:44:42,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2024-06-27 16:44:42,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 78 [2024-06-27 16:44:42,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 642 transitions, 4058 flow. Second operand has 18 states, 18 states have (on average 17.666666666666668) internal successors, (318), 18 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:44:42,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:44:42,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 78 [2024-06-27 16:44:42,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand