./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/mult-dist.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f 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/mult-dist.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 c31f1603fd15e011308b2e8fcd1cd45b23f0b00ac0b8b466c4f212460081639c --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 10:29:00,119 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 10:29:00,197 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-10 10:29:00,209 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 10:29:00,210 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 10:29:00,235 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 10:29:00,236 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 10:29:00,236 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 10:29:00,237 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 10:29:00,238 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 10:29:00,238 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 10:29:00,238 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 10:29:00,238 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 10:29:00,240 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 10:29:00,240 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 10:29:00,240 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 10:29:00,241 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 10:29:00,241 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 10:29:00,241 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 10:29:00,241 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 10:29:00,241 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 10:29:00,243 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 10:29:00,243 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 10:29:00,244 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 10:29:00,244 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 10:29:00,244 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 10:29:00,244 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 10:29:00,244 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 10:29:00,244 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 10:29:00,244 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 10:29:00,245 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 10:29:00,245 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 10:29:00,245 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:29:00,245 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 10:29:00,245 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 10:29:00,245 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 10:29:00,245 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 10:29:00,246 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 10:29:00,246 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 10:29:00,246 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 10:29:00,246 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 10:29:00,247 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 10:29:00,247 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c31f1603fd15e011308b2e8fcd1cd45b23f0b00ac0b8b466c4f212460081639c [2024-11-10 10:29:00,449 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 10:29:00,474 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 10:29:00,478 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 10:29:00,479 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 10:29:00,479 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 10:29:00,480 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/mult-dist.wvr.c [2024-11-10 10:29:01,719 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 10:29:01,875 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 10:29:01,876 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/mult-dist.wvr.c [2024-11-10 10:29:01,882 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51ec1a50f/5f41e2db95014e6a8cc44a9b4a526781/FLAGe88d8c25d [2024-11-10 10:29:02,288 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51ec1a50f/5f41e2db95014e6a8cc44a9b4a526781 [2024-11-10 10:29:02,291 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 10:29:02,292 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 10:29:02,294 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 10:29:02,295 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 10:29:02,299 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 10:29:02,300 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:29:02" (1/1) ... [2024-11-10 10:29:02,301 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@755a4a10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:29:02, skipping insertion in model container [2024-11-10 10:29:02,301 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:29:02" (1/1) ... [2024-11-10 10:29:02,328 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 10:29:02,509 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/mult-dist.wvr.c[2155,2168] [2024-11-10 10:29:02,514 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:29:02,522 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 10:29:02,539 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/mult-dist.wvr.c[2155,2168] [2024-11-10 10:29:02,540 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:29:02,557 INFO L204 MainTranslator]: Completed translation [2024-11-10 10:29:02,558 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:29:02 WrapperNode [2024-11-10 10:29:02,558 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 10:29:02,559 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 10:29:02,559 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 10:29:02,559 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 10:29:02,577 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:29:02" (1/1) ... [2024-11-10 10:29:02,584 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:29:02" (1/1) ... [2024-11-10 10:29:02,600 INFO L138 Inliner]: procedures = 21, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 54 [2024-11-10 10:29:02,601 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 10:29:02,602 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 10:29:02,602 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 10:29:02,602 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 10:29:02,618 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:29:02" (1/1) ... [2024-11-10 10:29:02,618 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:29:02" (1/1) ... [2024-11-10 10:29:02,619 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:29:02" (1/1) ... [2024-11-10 10:29:02,634 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]. [2024-11-10 10:29:02,634 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:29:02" (1/1) ... [2024-11-10 10:29:02,634 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:29:02" (1/1) ... [2024-11-10 10:29:02,638 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:29:02" (1/1) ... [2024-11-10 10:29:02,639 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:29:02" (1/1) ... [2024-11-10 10:29:02,640 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:29:02" (1/1) ... [2024-11-10 10:29:02,640 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:29:02" (1/1) ... [2024-11-10 10:29:02,645 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 10:29:02,646 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 10:29:02,646 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 10:29:02,646 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 10:29:02,647 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:29:02" (1/1) ... [2024-11-10 10:29:02,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:29:02,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:02,686 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) [2024-11-10 10:29:02,694 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 [2024-11-10 10:29:02,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 10:29:02,746 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-10 10:29:02,746 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-10 10:29:02,746 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-10 10:29:02,746 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-10 10:29:02,746 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-10 10:29:02,746 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-10 10:29:02,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 10:29:02,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 10:29:02,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 10:29:02,749 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 10:29:02,837 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 10:29:02,840 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 10:29:03,007 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 10:29:03,008 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 10:29:03,132 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 10:29:03,133 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 10:29:03,133 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:29:03 BoogieIcfgContainer [2024-11-10 10:29:03,133 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 10:29:03,136 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 10:29:03,136 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 10:29:03,139 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 10:29:03,139 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:29:02" (1/3) ... [2024-11-10 10:29:03,140 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5157d9c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:29:03, skipping insertion in model container [2024-11-10 10:29:03,140 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:29:02" (2/3) ... [2024-11-10 10:29:03,141 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5157d9c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:29:03, skipping insertion in model container [2024-11-10 10:29:03,141 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:29:03" (3/3) ... [2024-11-10 10:29:03,142 INFO L112 eAbstractionObserver]: Analyzing ICFG mult-dist.wvr.c [2024-11-10 10:29:03,157 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 10:29:03,157 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-10 10:29:03,157 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 10:29:03,202 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-10 10:29:03,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 34 transitions, 89 flow [2024-11-10 10:29:03,253 INFO L124 PetriNetUnfolderBase]: 6/31 cut-off events. [2024-11-10 10:29:03,253 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-10 10:29:03,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 31 events. 6/31 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 39 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-11-10 10:29:03,256 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 34 transitions, 89 flow [2024-11-10 10:29:03,259 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 30 transitions, 78 flow [2024-11-10 10:29:03,265 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:29:03,271 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;@1da1e7fd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:29:03,271 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-10 10:29:03,281 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:29:03,281 INFO L124 PetriNetUnfolderBase]: 6/29 cut-off events. [2024-11-10 10:29:03,281 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-10 10:29:03,281 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:03,282 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] [2024-11-10 10:29:03,283 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:29:03,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:03,287 INFO L85 PathProgramCache]: Analyzing trace with hash 464856337, now seen corresponding path program 1 times [2024-11-10 10:29:03,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:03,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296170821] [2024-11-10 10:29:03,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:03,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:03,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:03,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:03,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:03,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296170821] [2024-11-10 10:29:03,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296170821] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:29:03,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:29:03,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:29:03,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277297616] [2024-11-10 10:29:03,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:29:03,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 10:29:03,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:03,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 10:29:03,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 10:29:03,490 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 34 [2024-11-10 10:29:03,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 78 flow. Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 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) [2024-11-10 10:29:03,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:03,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 34 [2024-11-10 10:29:03,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:03,584 INFO L124 PetriNetUnfolderBase]: 199/319 cut-off events. [2024-11-10 10:29:03,584 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2024-11-10 10:29:03,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 655 conditions, 319 events. 199/319 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1106 event pairs, 124 based on Foata normal form. 75/361 useless extension candidates. Maximal degree in co-relation 560. Up to 293 conditions per place. [2024-11-10 10:29:03,593 INFO L140 encePairwiseOnDemand]: 31/34 looper letters, 20 selfloop transitions, 0 changer transitions 0/27 dead transitions. [2024-11-10 10:29:03,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 27 transitions, 112 flow [2024-11-10 10:29:03,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 10:29:03,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 10:29:03,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 43 transitions. [2024-11-10 10:29:03,605 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6323529411764706 [2024-11-10 10:29:03,607 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 78 flow. Second operand 2 states and 43 transitions. [2024-11-10 10:29:03,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 27 transitions, 112 flow [2024-11-10 10:29:03,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 27 transitions, 100 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-10 10:29:03,610 INFO L231 Difference]: Finished difference. Result has 29 places, 27 transitions, 60 flow [2024-11-10 10:29:03,612 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=60, PETRI_PLACES=29, PETRI_TRANSITIONS=27} [2024-11-10 10:29:03,615 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, -5 predicate places. [2024-11-10 10:29:03,615 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 27 transitions, 60 flow [2024-11-10 10:29:03,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 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) [2024-11-10 10:29:03,615 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:03,615 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] [2024-11-10 10:29:03,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 10:29:03,616 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:29:03,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:03,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1210350142, now seen corresponding path program 1 times [2024-11-10 10:29:03,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:03,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158803468] [2024-11-10 10:29:03,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:03,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:03,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:04,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:04,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:04,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158803468] [2024-11-10 10:29:04,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158803468] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:29:04,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:29:04,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:29:04,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157676499] [2024-11-10 10:29:04,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:29:04,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 10:29:04,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:04,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 10:29:04,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 10:29:04,007 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 34 [2024-11-10 10:29:04,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 27 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:04,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:04,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 34 [2024-11-10 10:29:04,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:04,129 INFO L124 PetriNetUnfolderBase]: 386/663 cut-off events. [2024-11-10 10:29:04,130 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 10:29:04,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1253 conditions, 663 events. 386/663 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3033 event pairs, 124 based on Foata normal form. 1/631 useless extension candidates. Maximal degree in co-relation 1250. Up to 349 conditions per place. [2024-11-10 10:29:04,137 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 32 selfloop transitions, 4 changer transitions 1/44 dead transitions. [2024-11-10 10:29:04,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 44 transitions, 173 flow [2024-11-10 10:29:04,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 10:29:04,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 10:29:04,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 68 transitions. [2024-11-10 10:29:04,140 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-10 10:29:04,140 INFO L175 Difference]: Start difference. First operand has 29 places, 27 transitions, 60 flow. Second operand 3 states and 68 transitions. [2024-11-10 10:29:04,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 44 transitions, 173 flow [2024-11-10 10:29:04,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 44 transitions, 173 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 10:29:04,142 INFO L231 Difference]: Finished difference. Result has 32 places, 30 transitions, 86 flow [2024-11-10 10:29:04,142 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=32, PETRI_TRANSITIONS=30} [2024-11-10 10:29:04,143 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, -2 predicate places. [2024-11-10 10:29:04,144 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 30 transitions, 86 flow [2024-11-10 10:29:04,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:04,144 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:04,144 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] [2024-11-10 10:29:04,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 10:29:04,145 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:29:04,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:04,146 INFO L85 PathProgramCache]: Analyzing trace with hash -307299903, now seen corresponding path program 1 times [2024-11-10 10:29:04,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:04,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950507026] [2024-11-10 10:29:04,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:04,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:04,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:04,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:04,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:04,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950507026] [2024-11-10 10:29:04,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950507026] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:29:04,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:29:04,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-10 10:29:04,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538002669] [2024-11-10 10:29:04,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:29:04,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 10:29:04,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:04,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 10:29:04,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-10 10:29:04,409 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-11-10 10:29:04,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 30 transitions, 86 flow. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:04,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:04,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-11-10 10:29:04,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:04,893 INFO L124 PetriNetUnfolderBase]: 1374/2024 cut-off events. [2024-11-10 10:29:04,894 INFO L125 PetriNetUnfolderBase]: For 445/445 co-relation queries the response was YES. [2024-11-10 10:29:04,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4629 conditions, 2024 events. 1374/2024 cut-off events. For 445/445 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 9607 event pairs, 350 based on Foata normal form. 20/1986 useless extension candidates. Maximal degree in co-relation 4624. Up to 1085 conditions per place. [2024-11-10 10:29:04,908 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 96 selfloop transitions, 41 changer transitions 10/151 dead transitions. [2024-11-10 10:29:04,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 151 transitions, 711 flow [2024-11-10 10:29:04,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-10 10:29:04,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-10 10:29:04,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 237 transitions. [2024-11-10 10:29:04,912 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49789915966386555 [2024-11-10 10:29:04,912 INFO L175 Difference]: Start difference. First operand has 32 places, 30 transitions, 86 flow. Second operand 14 states and 237 transitions. [2024-11-10 10:29:04,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 151 transitions, 711 flow [2024-11-10 10:29:04,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 151 transitions, 690 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 10:29:04,917 INFO L231 Difference]: Finished difference. Result has 54 places, 71 transitions, 387 flow [2024-11-10 10:29:04,918 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=387, PETRI_PLACES=54, PETRI_TRANSITIONS=71} [2024-11-10 10:29:04,919 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 20 predicate places. [2024-11-10 10:29:04,920 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 71 transitions, 387 flow [2024-11-10 10:29:04,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:04,921 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:04,921 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] [2024-11-10 10:29:04,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 10:29:04,921 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:29:04,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:04,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1701904171, now seen corresponding path program 2 times [2024-11-10 10:29:04,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:04,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40221080] [2024-11-10 10:29:04,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:04,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:04,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:05,106 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:05,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:05,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40221080] [2024-11-10 10:29:05,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40221080] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:29:05,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:29:05,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-10 10:29:05,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203084495] [2024-11-10 10:29:05,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:29:05,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 10:29:05,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:05,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 10:29:05,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-10 10:29:05,120 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-11-10 10:29:05,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 71 transitions, 387 flow. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:05,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:05,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-11-10 10:29:05,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:05,670 INFO L124 PetriNetUnfolderBase]: 2173/3238 cut-off events. [2024-11-10 10:29:05,671 INFO L125 PetriNetUnfolderBase]: For 8760/8760 co-relation queries the response was YES. [2024-11-10 10:29:05,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11507 conditions, 3238 events. 2173/3238 cut-off events. For 8760/8760 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 17457 event pairs, 591 based on Foata normal form. 14/3152 useless extension candidates. Maximal degree in co-relation 11492. Up to 1558 conditions per place. [2024-11-10 10:29:05,693 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 107 selfloop transitions, 65 changer transitions 12/188 dead transitions. [2024-11-10 10:29:05,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 188 transitions, 1432 flow [2024-11-10 10:29:05,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-10 10:29:05,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-10 10:29:05,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 201 transitions. [2024-11-10 10:29:05,697 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49264705882352944 [2024-11-10 10:29:05,698 INFO L175 Difference]: Start difference. First operand has 54 places, 71 transitions, 387 flow. Second operand 12 states and 201 transitions. [2024-11-10 10:29:05,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 188 transitions, 1432 flow [2024-11-10 10:29:05,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 188 transitions, 1432 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 10:29:05,735 INFO L231 Difference]: Finished difference. Result has 75 places, 130 transitions, 1085 flow [2024-11-10 10:29:05,736 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1085, PETRI_PLACES=75, PETRI_TRANSITIONS=130} [2024-11-10 10:29:05,737 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 41 predicate places. [2024-11-10 10:29:05,737 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 130 transitions, 1085 flow [2024-11-10 10:29:05,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:05,737 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:05,738 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] [2024-11-10 10:29:05,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 10:29:05,738 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:29:05,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:05,739 INFO L85 PathProgramCache]: Analyzing trace with hash 505745165, now seen corresponding path program 3 times [2024-11-10 10:29:05,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:05,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648698135] [2024-11-10 10:29:05,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:05,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:05,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:05,938 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:05,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:05,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648698135] [2024-11-10 10:29:05,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648698135] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:05,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257704715] [2024-11-10 10:29:05,940 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 10:29:05,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:05,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:05,942 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) [2024-11-10 10:29:05,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 10:29:06,009 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-10 10:29:06,009 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:29:06,011 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-10 10:29:06,015 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:06,157 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:06,158 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:29:06,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:06,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257704715] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:06,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 10:29:06,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 7] total 11 [2024-11-10 10:29:06,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749771012] [2024-11-10 10:29:06,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:29:06,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 10:29:06,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:06,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 10:29:06,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-10 10:29:06,527 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2024-11-10 10:29:06,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 130 transitions, 1085 flow. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 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) [2024-11-10 10:29:06,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:06,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2024-11-10 10:29:06,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:07,232 INFO L124 PetriNetUnfolderBase]: 3010/4599 cut-off events. [2024-11-10 10:29:07,233 INFO L125 PetriNetUnfolderBase]: For 26240/26492 co-relation queries the response was YES. [2024-11-10 10:29:07,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21119 conditions, 4599 events. 3010/4599 cut-off events. For 26240/26492 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 26961 event pairs, 631 based on Foata normal form. 15/4441 useless extension candidates. Maximal degree in co-relation 21093. Up to 1391 conditions per place. [2024-11-10 10:29:07,271 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 196 selfloop transitions, 42 changer transitions 1/253 dead transitions. [2024-11-10 10:29:07,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 253 transitions, 2403 flow [2024-11-10 10:29:07,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 10:29:07,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-10 10:29:07,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 184 transitions. [2024-11-10 10:29:07,273 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6013071895424836 [2024-11-10 10:29:07,273 INFO L175 Difference]: Start difference. First operand has 75 places, 130 transitions, 1085 flow. Second operand 9 states and 184 transitions. [2024-11-10 10:29:07,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 253 transitions, 2403 flow [2024-11-10 10:29:07,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 253 transitions, 2187 flow, removed 95 selfloop flow, removed 4 redundant places. [2024-11-10 10:29:07,321 INFO L231 Difference]: Finished difference. Result has 85 places, 151 transitions, 1289 flow [2024-11-10 10:29:07,322 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=925, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1289, PETRI_PLACES=85, PETRI_TRANSITIONS=151} [2024-11-10 10:29:07,323 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 51 predicate places. [2024-11-10 10:29:07,324 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 151 transitions, 1289 flow [2024-11-10 10:29:07,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 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) [2024-11-10 10:29:07,324 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:07,324 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] [2024-11-10 10:29:07,339 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 10:29:07,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:07,530 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:29:07,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:07,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1686391589, now seen corresponding path program 4 times [2024-11-10 10:29:07,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:07,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531745441] [2024-11-10 10:29:07,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:07,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:07,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:07,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:07,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:07,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531745441] [2024-11-10 10:29:07,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531745441] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:29:07,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:29:07,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-10 10:29:07,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449172047] [2024-11-10 10:29:07,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:29:07,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 10:29:07,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:07,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 10:29:07,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-10 10:29:07,706 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-11-10 10:29:07,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 151 transitions, 1289 flow. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:07,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:07,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-11-10 10:29:07,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:08,476 INFO L124 PetriNetUnfolderBase]: 3594/5364 cut-off events. [2024-11-10 10:29:08,477 INFO L125 PetriNetUnfolderBase]: For 40424/40450 co-relation queries the response was YES. [2024-11-10 10:29:08,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26716 conditions, 5364 events. 3594/5364 cut-off events. For 40424/40450 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 30298 event pairs, 840 based on Foata normal form. 48/5376 useless extension candidates. Maximal degree in co-relation 26687. Up to 2058 conditions per place. [2024-11-10 10:29:08,518 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 193 selfloop transitions, 79 changer transitions 22/298 dead transitions. [2024-11-10 10:29:08,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 298 transitions, 3092 flow [2024-11-10 10:29:08,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-10 10:29:08,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-10 10:29:08,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 222 transitions. [2024-11-10 10:29:08,519 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.502262443438914 [2024-11-10 10:29:08,519 INFO L175 Difference]: Start difference. First operand has 85 places, 151 transitions, 1289 flow. Second operand 13 states and 222 transitions. [2024-11-10 10:29:08,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 298 transitions, 3092 flow [2024-11-10 10:29:08,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 298 transitions, 3022 flow, removed 35 selfloop flow, removed 0 redundant places. [2024-11-10 10:29:08,612 INFO L231 Difference]: Finished difference. Result has 108 places, 182 transitions, 1940 flow [2024-11-10 10:29:08,612 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1225, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1940, PETRI_PLACES=108, PETRI_TRANSITIONS=182} [2024-11-10 10:29:08,613 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 74 predicate places. [2024-11-10 10:29:08,613 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 182 transitions, 1940 flow [2024-11-10 10:29:08,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:08,613 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:08,613 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] [2024-11-10 10:29:08,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 10:29:08,614 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:29:08,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:08,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1193632153, now seen corresponding path program 5 times [2024-11-10 10:29:08,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:08,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39549944] [2024-11-10 10:29:08,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:08,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:08,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:08,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:08,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:08,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39549944] [2024-11-10 10:29:08,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39549944] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:08,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141631716] [2024-11-10 10:29:08,740 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-10 10:29:08,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:08,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:08,742 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) [2024-11-10 10:29:08,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 10:29:08,798 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 10:29:08,798 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:29:08,799 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-10 10:29:08,800 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:08,925 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:08,925 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:29:09,074 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:09,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141631716] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:09,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 10:29:09,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 8] total 15 [2024-11-10 10:29:09,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151263121] [2024-11-10 10:29:09,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:29:09,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 10:29:09,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:09,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 10:29:09,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-11-10 10:29:09,089 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2024-11-10 10:29:09,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 182 transitions, 1940 flow. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 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) [2024-11-10 10:29:09,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:09,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2024-11-10 10:29:09,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:09,856 INFO L124 PetriNetUnfolderBase]: 3680/5675 cut-off events. [2024-11-10 10:29:09,856 INFO L125 PetriNetUnfolderBase]: For 69153/69438 co-relation queries the response was YES. [2024-11-10 10:29:09,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32744 conditions, 5675 events. 3680/5675 cut-off events. For 69153/69438 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 34671 event pairs, 1165 based on Foata normal form. 18/5562 useless extension candidates. Maximal degree in co-relation 32703. Up to 2443 conditions per place. [2024-11-10 10:29:09,999 INFO L140 encePairwiseOnDemand]: 25/34 looper letters, 182 selfloop transitions, 46 changer transitions 0/247 dead transitions. [2024-11-10 10:29:09,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 247 transitions, 2978 flow [2024-11-10 10:29:10,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 10:29:10,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 10:29:10,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-11-10 10:29:10,001 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5630252100840336 [2024-11-10 10:29:10,001 INFO L175 Difference]: Start difference. First operand has 108 places, 182 transitions, 1940 flow. Second operand 7 states and 134 transitions. [2024-11-10 10:29:10,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 247 transitions, 2978 flow [2024-11-10 10:29:10,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 247 transitions, 2850 flow, removed 50 selfloop flow, removed 1 redundant places. [2024-11-10 10:29:10,086 INFO L231 Difference]: Finished difference. Result has 118 places, 201 transitions, 2254 flow [2024-11-10 10:29:10,087 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1822, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2254, PETRI_PLACES=118, PETRI_TRANSITIONS=201} [2024-11-10 10:29:10,087 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 84 predicate places. [2024-11-10 10:29:10,087 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 201 transitions, 2254 flow [2024-11-10 10:29:10,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 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) [2024-11-10 10:29:10,088 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:10,088 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] [2024-11-10 10:29:10,101 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 10:29:10,288 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 [2024-11-10 10:29:10,289 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:29:10,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:10,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1590138069, now seen corresponding path program 6 times [2024-11-10 10:29:10,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:10,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21829841] [2024-11-10 10:29:10,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:10,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:10,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:10,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:10,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:10,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21829841] [2024-11-10 10:29:10,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21829841] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:29:10,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:29:10,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-10 10:29:10,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25702143] [2024-11-10 10:29:10,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:29:10,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 10:29:10,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:10,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 10:29:10,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-10 10:29:10,405 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-11-10 10:29:10,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 201 transitions, 2254 flow. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:10,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:10,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-11-10 10:29:10,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:11,345 INFO L124 PetriNetUnfolderBase]: 4208/6287 cut-off events. [2024-11-10 10:29:11,345 INFO L125 PetriNetUnfolderBase]: For 92646/92667 co-relation queries the response was YES. [2024-11-10 10:29:11,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38509 conditions, 6287 events. 4208/6287 cut-off events. For 92646/92667 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 36841 event pairs, 1275 based on Foata normal form. 34/6259 useless extension candidates. Maximal degree in co-relation 38463. Up to 3194 conditions per place. [2024-11-10 10:29:11,392 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 190 selfloop transitions, 123 changer transitions 14/331 dead transitions. [2024-11-10 10:29:11,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 331 transitions, 4543 flow [2024-11-10 10:29:11,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-10 10:29:11,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-10 10:29:11,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 236 transitions. [2024-11-10 10:29:11,397 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4957983193277311 [2024-11-10 10:29:11,397 INFO L175 Difference]: Start difference. First operand has 118 places, 201 transitions, 2254 flow. Second operand 14 states and 236 transitions. [2024-11-10 10:29:11,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 331 transitions, 4543 flow [2024-11-10 10:29:11,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 331 transitions, 4456 flow, removed 29 selfloop flow, removed 1 redundant places. [2024-11-10 10:29:11,539 INFO L231 Difference]: Finished difference. Result has 140 places, 242 transitions, 3286 flow [2024-11-10 10:29:11,540 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2175, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3286, PETRI_PLACES=140, PETRI_TRANSITIONS=242} [2024-11-10 10:29:11,540 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 106 predicate places. [2024-11-10 10:29:11,540 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 242 transitions, 3286 flow [2024-11-10 10:29:11,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:29:11,541 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:11,541 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] [2024-11-10 10:29:11,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 10:29:11,541 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:29:11,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:11,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1195932901, now seen corresponding path program 7 times [2024-11-10 10:29:11,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:11,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313989455] [2024-11-10 10:29:11,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:11,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:11,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:11,645 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:11,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:11,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313989455] [2024-11-10 10:29:11,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313989455] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:11,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184047366] [2024-11-10 10:29:11,646 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-10 10:29:11,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:11,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:11,648 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) [2024-11-10 10:29:11,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 10:29:11,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:11,708 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-10 10:29:11,709 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:11,860 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:11,860 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:29:11,975 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:11,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184047366] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:29:11,976 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:29:11,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 12 [2024-11-10 10:29:11,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568717992] [2024-11-10 10:29:11,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:29:11,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 10:29:11,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:11,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 10:29:11,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-11-10 10:29:11,997 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-11-10 10:29:11,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 242 transitions, 3286 flow. Second operand has 12 states, 12 states have (on average 9.833333333333334) internal successors, (118), 12 states have internal predecessors, (118), 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) [2024-11-10 10:29:11,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:11,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-11-10 10:29:11,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:13,544 INFO L124 PetriNetUnfolderBase]: 5957/8871 cut-off events. [2024-11-10 10:29:13,545 INFO L125 PetriNetUnfolderBase]: For 160527/160568 co-relation queries the response was YES. [2024-11-10 10:29:13,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59205 conditions, 8871 events. 5957/8871 cut-off events. For 160527/160568 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 55282 event pairs, 1055 based on Foata normal form. 42/8882 useless extension candidates. Maximal degree in co-relation 59149. Up to 4092 conditions per place. [2024-11-10 10:29:13,707 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 299 selfloop transitions, 207 changer transitions 0/510 dead transitions. [2024-11-10 10:29:13,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 510 transitions, 7588 flow [2024-11-10 10:29:13,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-10 10:29:13,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-10 10:29:13,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 288 transitions. [2024-11-10 10:29:13,708 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4982698961937716 [2024-11-10 10:29:13,708 INFO L175 Difference]: Start difference. First operand has 140 places, 242 transitions, 3286 flow. Second operand 17 states and 288 transitions. [2024-11-10 10:29:13,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 510 transitions, 7588 flow [2024-11-10 10:29:13,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 510 transitions, 7230 flow, removed 179 selfloop flow, removed 0 redundant places. [2024-11-10 10:29:13,992 INFO L231 Difference]: Finished difference. Result has 170 places, 362 transitions, 5295 flow [2024-11-10 10:29:13,992 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2994, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=5295, PETRI_PLACES=170, PETRI_TRANSITIONS=362} [2024-11-10 10:29:13,993 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 136 predicate places. [2024-11-10 10:29:13,993 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 362 transitions, 5295 flow [2024-11-10 10:29:13,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.833333333333334) internal successors, (118), 12 states have internal predecessors, (118), 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) [2024-11-10 10:29:13,993 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:13,993 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] [2024-11-10 10:29:14,006 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-10 10:29:14,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:14,194 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:29:14,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:14,195 INFO L85 PathProgramCache]: Analyzing trace with hash -863259709, now seen corresponding path program 8 times [2024-11-10 10:29:14,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:14,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273647576] [2024-11-10 10:29:14,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:14,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:14,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:14,313 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:14,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:14,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273647576] [2024-11-10 10:29:14,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273647576] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:14,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115311574] [2024-11-10 10:29:14,313 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 10:29:14,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:14,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:14,316 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) [2024-11-10 10:29:14,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 10:29:14,371 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 10:29:14,372 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:29:14,373 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-10 10:29:14,374 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:14,465 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:14,465 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:29:14,744 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:14,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115311574] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:29:14,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:29:14,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 16 [2024-11-10 10:29:14,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104038519] [2024-11-10 10:29:14,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:29:14,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-10 10:29:14,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:14,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-10 10:29:14,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-10 10:29:14,767 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-11-10 10:29:14,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 362 transitions, 5295 flow. Second operand has 16 states, 16 states have (on average 9.1875) internal successors, (147), 16 states have internal predecessors, (147), 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) [2024-11-10 10:29:14,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:14,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-11-10 10:29:14,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:20,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-10 10:29:21,758 INFO L124 PetriNetUnfolderBase]: 7344/11035 cut-off events. [2024-11-10 10:29:21,758 INFO L125 PetriNetUnfolderBase]: For 246731/246745 co-relation queries the response was YES. [2024-11-10 10:29:21,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81121 conditions, 11035 events. 7344/11035 cut-off events. For 246731/246745 co-relation queries the response was YES. Maximal size of possible extension queue 704. Compared 70588 event pairs, 502 based on Foata normal form. 64/11076 useless extension candidates. Maximal degree in co-relation 81050. Up to 3101 conditions per place. [2024-11-10 10:29:21,866 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 521 selfloop transitions, 539 changer transitions 119/1183 dead transitions. [2024-11-10 10:29:21,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 1183 transitions, 19082 flow [2024-11-10 10:29:21,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-10 10:29:21,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-11-10 10:29:21,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 506 transitions. [2024-11-10 10:29:21,869 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45098039215686275 [2024-11-10 10:29:21,869 INFO L175 Difference]: Start difference. First operand has 170 places, 362 transitions, 5295 flow. Second operand 33 states and 506 transitions. [2024-11-10 10:29:21,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 1183 transitions, 19082 flow [2024-11-10 10:29:22,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 1183 transitions, 18610 flow, removed 236 selfloop flow, removed 0 redundant places. [2024-11-10 10:29:22,475 INFO L231 Difference]: Finished difference. Result has 231 places, 729 transitions, 13346 flow [2024-11-10 10:29:22,476 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=5075, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=221, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=13346, PETRI_PLACES=231, PETRI_TRANSITIONS=729} [2024-11-10 10:29:22,476 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 197 predicate places. [2024-11-10 10:29:22,476 INFO L471 AbstractCegarLoop]: Abstraction has has 231 places, 729 transitions, 13346 flow [2024-11-10 10:29:22,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 9.1875) internal successors, (147), 16 states have internal predecessors, (147), 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) [2024-11-10 10:29:22,477 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:22,477 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] [2024-11-10 10:29:22,490 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-10 10:29:22,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:22,677 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:29:22,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:22,678 INFO L85 PathProgramCache]: Analyzing trace with hash 2096564949, now seen corresponding path program 9 times [2024-11-10 10:29:22,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:22,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280721981] [2024-11-10 10:29:22,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:22,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:22,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:22,808 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:22,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:22,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280721981] [2024-11-10 10:29:22,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280721981] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:22,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968657678] [2024-11-10 10:29:22,809 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 10:29:22,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:22,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:22,811 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) [2024-11-10 10:29:22,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 10:29:22,871 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-10 10:29:22,872 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:29:22,873 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-10 10:29:22,874 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:22,953 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:22,954 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:29:23,148 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:23,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968657678] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:23,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 10:29:23,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 7] total 11 [2024-11-10 10:29:23,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470084525] [2024-11-10 10:29:23,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:29:23,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 10:29:23,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:23,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 10:29:23,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-10 10:29:23,160 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2024-11-10 10:29:23,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 729 transitions, 13346 flow. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 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) [2024-11-10 10:29:23,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:23,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2024-11-10 10:29:23,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:25,667 INFO L124 PetriNetUnfolderBase]: 6662/10343 cut-off events. [2024-11-10 10:29:25,667 INFO L125 PetriNetUnfolderBase]: For 352815/353124 co-relation queries the response was YES. [2024-11-10 10:29:25,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91696 conditions, 10343 events. 6662/10343 cut-off events. For 352815/353124 co-relation queries the response was YES. Maximal size of possible extension queue 677. Compared 69782 event pairs, 1346 based on Foata normal form. 100/10353 useless extension candidates. Maximal degree in co-relation 91596. Up to 4284 conditions per place. [2024-11-10 10:29:25,830 INFO L140 encePairwiseOnDemand]: 25/34 looper letters, 572 selfloop transitions, 225 changer transitions 0/840 dead transitions. [2024-11-10 10:29:25,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 840 transitions, 16586 flow [2024-11-10 10:29:25,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 10:29:25,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 10:29:25,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-11-10 10:29:25,831 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-11-10 10:29:25,831 INFO L175 Difference]: Start difference. First operand has 231 places, 729 transitions, 13346 flow. Second operand 7 states and 136 transitions. [2024-11-10 10:29:25,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 840 transitions, 16586 flow [2024-11-10 10:29:27,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 840 transitions, 15836 flow, removed 375 selfloop flow, removed 0 redundant places. [2024-11-10 10:29:27,376 INFO L231 Difference]: Finished difference. Result has 241 places, 756 transitions, 13828 flow [2024-11-10 10:29:27,376 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=12690, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=729, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=510, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13828, PETRI_PLACES=241, PETRI_TRANSITIONS=756} [2024-11-10 10:29:27,377 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 207 predicate places. [2024-11-10 10:29:27,377 INFO L471 AbstractCegarLoop]: Abstraction has has 241 places, 756 transitions, 13828 flow [2024-11-10 10:29:27,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 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) [2024-11-10 10:29:27,377 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:27,377 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] [2024-11-10 10:29:27,389 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-10 10:29:27,577 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,SelfDestructingSolverStorable10 [2024-11-10 10:29:27,578 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:29:27,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:27,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1472139367, now seen corresponding path program 10 times [2024-11-10 10:29:27,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:27,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636593244] [2024-11-10 10:29:27,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:27,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:27,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:27,694 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:27,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:27,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636593244] [2024-11-10 10:29:27,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636593244] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:27,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050594943] [2024-11-10 10:29:27,695 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 10:29:27,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:27,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:27,696 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) [2024-11-10 10:29:27,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 10:29:27,756 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 10:29:27,756 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:29:27,757 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-10 10:29:27,759 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:27,851 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:27,851 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:29:27,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:27,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050594943] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:27,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 10:29:27,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 8] total 15 [2024-11-10 10:29:27,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459365133] [2024-11-10 10:29:27,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:29:27,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 10:29:27,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:27,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 10:29:27,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-11-10 10:29:28,003 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2024-11-10 10:29:28,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 756 transitions, 13828 flow. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 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) [2024-11-10 10:29:28,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:28,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2024-11-10 10:29:28,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:30,344 INFO L124 PetriNetUnfolderBase]: 6560/10214 cut-off events. [2024-11-10 10:29:30,344 INFO L125 PetriNetUnfolderBase]: For 328454/328740 co-relation queries the response was YES. [2024-11-10 10:29:30,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88346 conditions, 10214 events. 6560/10214 cut-off events. For 328454/328740 co-relation queries the response was YES. Maximal size of possible extension queue 679. Compared 69178 event pairs, 1364 based on Foata normal form. 101/10225 useless extension candidates. Maximal degree in co-relation 88241. Up to 4304 conditions per place. [2024-11-10 10:29:30,480 INFO L140 encePairwiseOnDemand]: 25/34 looper letters, 564 selfloop transitions, 210 changer transitions 0/817 dead transitions. [2024-11-10 10:29:30,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 817 transitions, 16175 flow [2024-11-10 10:29:30,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 10:29:30,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 10:29:30,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-11-10 10:29:30,481 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5546218487394958 [2024-11-10 10:29:30,481 INFO L175 Difference]: Start difference. First operand has 241 places, 756 transitions, 13828 flow. Second operand 7 states and 132 transitions. [2024-11-10 10:29:30,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 817 transitions, 16175 flow [2024-11-10 10:29:31,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 817 transitions, 15986 flow, removed 45 selfloop flow, removed 1 redundant places. [2024-11-10 10:29:31,810 INFO L231 Difference]: Finished difference. Result has 249 places, 748 transitions, 14019 flow [2024-11-10 10:29:31,811 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=13427, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=744, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=206, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=536, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=14019, PETRI_PLACES=249, PETRI_TRANSITIONS=748} [2024-11-10 10:29:31,812 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 215 predicate places. [2024-11-10 10:29:31,812 INFO L471 AbstractCegarLoop]: Abstraction has has 249 places, 748 transitions, 14019 flow [2024-11-10 10:29:31,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 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) [2024-11-10 10:29:31,812 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:31,812 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] [2024-11-10 10:29:31,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-10 10:29:32,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:32,013 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:29:32,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:32,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1935422233, now seen corresponding path program 11 times [2024-11-10 10:29:32,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:32,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362351210] [2024-11-10 10:29:32,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:32,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:32,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:32,121 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:32,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:32,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362351210] [2024-11-10 10:29:32,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362351210] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:32,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974840008] [2024-11-10 10:29:32,122 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-10 10:29:32,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:32,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:32,124 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:32,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-10 10:29:32,182 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 10:29:32,182 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:29:32,185 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-10 10:29:32,187 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:32,280 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:32,281 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:29:32,374 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:32,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974840008] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:32,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 10:29:32,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 8] total 14 [2024-11-10 10:29:32,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755085617] [2024-11-10 10:29:32,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:29:32,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 10:29:32,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:32,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 10:29:32,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-11-10 10:29:32,390 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2024-11-10 10:29:32,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 748 transitions, 14019 flow. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 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) [2024-11-10 10:29:32,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:32,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2024-11-10 10:29:32,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:34,844 INFO L124 PetriNetUnfolderBase]: 6561/10272 cut-off events. [2024-11-10 10:29:34,844 INFO L125 PetriNetUnfolderBase]: For 330886/331226 co-relation queries the response was YES. [2024-11-10 10:29:34,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89338 conditions, 10272 events. 6561/10272 cut-off events. For 330886/331226 co-relation queries the response was YES. Maximal size of possible extension queue 690. Compared 69886 event pairs, 1044 based on Foata normal form. 172/10366 useless extension candidates. Maximal degree in co-relation 89230. Up to 2900 conditions per place. [2024-11-10 10:29:35,118 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 465 selfloop transitions, 343 changer transitions 0/851 dead transitions. [2024-11-10 10:29:35,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 851 transitions, 17120 flow [2024-11-10 10:29:35,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 10:29:35,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-10 10:29:35,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 183 transitions. [2024-11-10 10:29:35,120 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5980392156862745 [2024-11-10 10:29:35,120 INFO L175 Difference]: Start difference. First operand has 249 places, 748 transitions, 14019 flow. Second operand 9 states and 183 transitions. [2024-11-10 10:29:35,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 851 transitions, 17120 flow [2024-11-10 10:29:36,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 851 transitions, 16650 flow, removed 35 selfloop flow, removed 3 redundant places. [2024-11-10 10:29:36,450 INFO L231 Difference]: Finished difference. Result has 260 places, 756 transitions, 15112 flow [2024-11-10 10:29:36,451 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=13457, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=738, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=325, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15112, PETRI_PLACES=260, PETRI_TRANSITIONS=756} [2024-11-10 10:29:36,451 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 226 predicate places. [2024-11-10 10:29:36,451 INFO L471 AbstractCegarLoop]: Abstraction has has 260 places, 756 transitions, 15112 flow [2024-11-10 10:29:36,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 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) [2024-11-10 10:29:36,451 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:36,452 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] [2024-11-10 10:29:36,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-10 10:29:36,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:36,654 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:29:36,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:36,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1817942753, now seen corresponding path program 12 times [2024-11-10 10:29:36,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:36,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486975953] [2024-11-10 10:29:36,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:36,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:36,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:36,772 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:36,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:36,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486975953] [2024-11-10 10:29:36,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486975953] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:36,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228443389] [2024-11-10 10:29:36,774 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-10 10:29:36,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:36,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:36,775 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:36,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-10 10:29:36,829 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-10 10:29:36,830 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:29:36,831 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-10 10:29:36,832 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:36,970 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:36,971 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:29:37,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:37,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228443389] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:37,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 10:29:37,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 7] total 11 [2024-11-10 10:29:37,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603129882] [2024-11-10 10:29:37,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:29:37,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 10:29:37,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:37,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 10:29:37,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-11-10 10:29:37,074 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2024-11-10 10:29:37,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 756 transitions, 15112 flow. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 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) [2024-11-10 10:29:37,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:37,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2024-11-10 10:29:37,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:39,284 INFO L124 PetriNetUnfolderBase]: 6395/9992 cut-off events. [2024-11-10 10:29:39,284 INFO L125 PetriNetUnfolderBase]: For 337248/337624 co-relation queries the response was YES. [2024-11-10 10:29:39,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88317 conditions, 9992 events. 6395/9992 cut-off events. For 337248/337624 co-relation queries the response was YES. Maximal size of possible extension queue 667. Compared 67820 event pairs, 1336 based on Foata normal form. 174/10072 useless extension candidates. Maximal degree in co-relation 88203. Up to 4152 conditions per place. [2024-11-10 10:29:39,546 INFO L140 encePairwiseOnDemand]: 25/34 looper letters, 515 selfloop transitions, 257 changer transitions 0/815 dead transitions. [2024-11-10 10:29:39,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 815 transitions, 17343 flow [2024-11-10 10:29:39,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 10:29:39,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 10:29:39,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-11-10 10:29:39,548 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5546218487394958 [2024-11-10 10:29:39,548 INFO L175 Difference]: Start difference. First operand has 260 places, 756 transitions, 15112 flow. Second operand 7 states and 132 transitions. [2024-11-10 10:29:39,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 815 transitions, 17343 flow [2024-11-10 10:29:40,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 815 transitions, 17287 flow, removed 28 selfloop flow, removed 0 redundant places. [2024-11-10 10:29:40,896 INFO L231 Difference]: Finished difference. Result has 269 places, 755 transitions, 15672 flow [2024-11-10 10:29:40,897 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=15016, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=754, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=256, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15672, PETRI_PLACES=269, PETRI_TRANSITIONS=755} [2024-11-10 10:29:40,898 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 235 predicate places. [2024-11-10 10:29:40,898 INFO L471 AbstractCegarLoop]: Abstraction has has 269 places, 755 transitions, 15672 flow [2024-11-10 10:29:40,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 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) [2024-11-10 10:29:40,898 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:40,898 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] [2024-11-10 10:29:40,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-10 10:29:41,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-10 10:29:41,099 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:29:41,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:41,099 INFO L85 PathProgramCache]: Analyzing trace with hash 212862141, now seen corresponding path program 13 times [2024-11-10 10:29:41,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:41,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792142721] [2024-11-10 10:29:41,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:41,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:41,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:41,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:41,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:41,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792142721] [2024-11-10 10:29:41,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792142721] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:41,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951920863] [2024-11-10 10:29:41,295 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-10 10:29:41,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:41,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:41,297 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:41,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-10 10:29:41,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:41,347 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-10 10:29:41,348 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:41,438 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:41,439 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:29:41,825 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:41,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951920863] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:29:41,825 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:29:41,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 12 [2024-11-10 10:29:41,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312971712] [2024-11-10 10:29:41,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:29:41,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 10:29:41,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:41,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 10:29:41,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-11-10 10:29:41,865 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2024-11-10 10:29:41,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 755 transitions, 15672 flow. Second operand has 12 states, 12 states have (on average 11.0) internal successors, (132), 12 states have internal predecessors, (132), 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) [2024-11-10 10:29:41,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:41,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2024-11-10 10:29:41,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:46,000 INFO L124 PetriNetUnfolderBase]: 9320/14560 cut-off events. [2024-11-10 10:29:46,000 INFO L125 PetriNetUnfolderBase]: For 493860/494666 co-relation queries the response was YES. [2024-11-10 10:29:46,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132024 conditions, 14560 events. 9320/14560 cut-off events. For 493860/494666 co-relation queries the response was YES. Maximal size of possible extension queue 1027. Compared 104004 event pairs, 1093 based on Foata normal form. 214/14600 useless extension candidates. Maximal degree in co-relation 131906. Up to 4867 conditions per place. [2024-11-10 10:29:46,188 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 720 selfloop transitions, 715 changer transitions 1/1479 dead transitions. [2024-11-10 10:29:46,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 1479 transitions, 32874 flow [2024-11-10 10:29:46,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-10 10:29:46,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-10 10:29:46,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 438 transitions. [2024-11-10 10:29:46,189 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5367647058823529 [2024-11-10 10:29:46,189 INFO L175 Difference]: Start difference. First operand has 269 places, 755 transitions, 15672 flow. Second operand 24 states and 438 transitions. [2024-11-10 10:29:46,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 1479 transitions, 32874 flow [2024-11-10 10:29:48,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 1479 transitions, 31966 flow, removed 86 selfloop flow, removed 4 redundant places. [2024-11-10 10:29:48,491 INFO L231 Difference]: Finished difference. Result has 304 places, 1120 transitions, 26716 flow [2024-11-10 10:29:48,492 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=15163, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=755, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=403, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=26716, PETRI_PLACES=304, PETRI_TRANSITIONS=1120} [2024-11-10 10:29:48,492 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 270 predicate places. [2024-11-10 10:29:48,492 INFO L471 AbstractCegarLoop]: Abstraction has has 304 places, 1120 transitions, 26716 flow [2024-11-10 10:29:48,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.0) internal successors, (132), 12 states have internal predecessors, (132), 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) [2024-11-10 10:29:48,492 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:29:48,492 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] [2024-11-10 10:29:48,504 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-10 10:29:48,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-10 10:29:48,693 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:29:48,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:29:48,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1936641579, now seen corresponding path program 14 times [2024-11-10 10:29:48,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:29:48,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735261564] [2024-11-10 10:29:48,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:29:48,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:29:48,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:29:48,811 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:48,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:29:48,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735261564] [2024-11-10 10:29:48,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735261564] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:29:48,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856618030] [2024-11-10 10:29:48,812 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 10:29:48,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:29:48,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:29:48,815 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:29:48,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-10 10:29:48,874 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 10:29:48,874 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:29:48,876 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-10 10:29:48,878 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:29:48,975 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:48,976 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:29:49,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:29:49,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856618030] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:29:49,128 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:29:49,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 16 [2024-11-10 10:29:49,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822199108] [2024-11-10 10:29:49,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:29:49,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-10 10:29:49,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:29:49,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-10 10:29:49,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2024-11-10 10:29:49,144 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-11-10 10:29:49,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 1120 transitions, 26716 flow. Second operand has 16 states, 16 states have (on average 9.4375) internal successors, (151), 16 states have internal predecessors, (151), 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) [2024-11-10 10:29:49,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:29:49,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-11-10 10:29:49,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:29:56,235 INFO L124 PetriNetUnfolderBase]: 14125/21245 cut-off events. [2024-11-10 10:29:56,235 INFO L125 PetriNetUnfolderBase]: For 821340/821354 co-relation queries the response was YES. [2024-11-10 10:29:56,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207859 conditions, 21245 events. 14125/21245 cut-off events. For 821340/821354 co-relation queries the response was YES. Maximal size of possible extension queue 1380. Compared 150378 event pairs, 1920 based on Foata normal form. 94/21317 useless extension candidates. Maximal degree in co-relation 207727. Up to 10841 conditions per place. [2024-11-10 10:29:56,662 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 1196 selfloop transitions, 784 changer transitions 0/1984 dead transitions. [2024-11-10 10:29:56,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 1984 transitions, 49380 flow [2024-11-10 10:29:56,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-10 10:29:56,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2024-11-10 10:29:56,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 574 transitions. [2024-11-10 10:29:56,665 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46895424836601307 [2024-11-10 10:29:56,665 INFO L175 Difference]: Start difference. First operand has 304 places, 1120 transitions, 26716 flow. Second operand 36 states and 574 transitions. [2024-11-10 10:29:56,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 1984 transitions, 49380 flow [2024-11-10 10:30:01,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 1984 transitions, 48316 flow, removed 532 selfloop flow, removed 0 redundant places. [2024-11-10 10:30:02,024 INFO L231 Difference]: Finished difference. Result has 366 places, 1510 transitions, 38590 flow [2024-11-10 10:30:02,025 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=26300, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=452, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=570, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=38590, PETRI_PLACES=366, PETRI_TRANSITIONS=1510} [2024-11-10 10:30:02,025 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 332 predicate places. [2024-11-10 10:30:02,026 INFO L471 AbstractCegarLoop]: Abstraction has has 366 places, 1510 transitions, 38590 flow [2024-11-10 10:30:02,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 9.4375) internal successors, (151), 16 states have internal predecessors, (151), 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) [2024-11-10 10:30:02,026 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:30:02,026 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] [2024-11-10 10:30:02,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-10 10:30:02,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-10 10:30:02,229 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:30:02,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:30:02,230 INFO L85 PathProgramCache]: Analyzing trace with hash 665120995, now seen corresponding path program 15 times [2024-11-10 10:30:02,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:30:02,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934315842] [2024-11-10 10:30:02,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:30:02,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:30:02,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:30:02,405 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:30:02,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:30:02,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934315842] [2024-11-10 10:30:02,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934315842] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:30:02,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223062432] [2024-11-10 10:30:02,406 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 10:30:02,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:30:02,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:30:02,408 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:30:02,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-10 10:30:02,457 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-10 10:30:02,458 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:30:02,459 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-10 10:30:02,460 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:30:02,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:30:02,568 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:30:02,707 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:30:02,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223062432] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:30:02,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:30:02,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 16 [2024-11-10 10:30:02,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872890409] [2024-11-10 10:30:02,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:30:02,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-10 10:30:02,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:30:02,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-10 10:30:02,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2024-11-10 10:30:02,745 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-11-10 10:30:02,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 1510 transitions, 38590 flow. Second operand has 16 states, 16 states have (on average 9.5625) internal successors, (153), 16 states have internal predecessors, (153), 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) [2024-11-10 10:30:02,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:30:02,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-11-10 10:30:02,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:30:11,134 INFO L124 PetriNetUnfolderBase]: 13976/20973 cut-off events. [2024-11-10 10:30:11,134 INFO L125 PetriNetUnfolderBase]: For 955441/955460 co-relation queries the response was YES. [2024-11-10 10:30:11,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221950 conditions, 20973 events. 13976/20973 cut-off events. For 955441/955460 co-relation queries the response was YES. Maximal size of possible extension queue 1359. Compared 147637 event pairs, 1920 based on Foata normal form. 98/21049 useless extension candidates. Maximal degree in co-relation 221790. Up to 10637 conditions per place. [2024-11-10 10:30:11,683 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 1194 selfloop transitions, 803 changer transitions 0/2001 dead transitions. [2024-11-10 10:30:11,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 2001 transitions, 51819 flow [2024-11-10 10:30:11,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-10 10:30:11,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-11-10 10:30:11,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 513 transitions. [2024-11-10 10:30:11,685 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48671726755218214 [2024-11-10 10:30:11,685 INFO L175 Difference]: Start difference. First operand has 366 places, 1510 transitions, 38590 flow. Second operand 31 states and 513 transitions. [2024-11-10 10:30:11,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 2001 transitions, 51819 flow [2024-11-10 10:30:18,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 2001 transitions, 50702 flow, removed 525 selfloop flow, removed 1 redundant places. [2024-11-10 10:30:18,964 INFO L231 Difference]: Finished difference. Result has 412 places, 1532 transitions, 39953 flow [2024-11-10 10:30:18,965 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=37273, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=769, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=718, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=39953, PETRI_PLACES=412, PETRI_TRANSITIONS=1532} [2024-11-10 10:30:18,965 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 378 predicate places. [2024-11-10 10:30:18,966 INFO L471 AbstractCegarLoop]: Abstraction has has 412 places, 1532 transitions, 39953 flow [2024-11-10 10:30:18,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 9.5625) internal successors, (153), 16 states have internal predecessors, (153), 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) [2024-11-10 10:30:18,966 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:30:18,966 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] [2024-11-10 10:30:18,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-10 10:30:19,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-10 10:30:19,167 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:30:19,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:30:19,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1061841729, now seen corresponding path program 16 times [2024-11-10 10:30:19,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:30:19,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343308710] [2024-11-10 10:30:19,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:30:19,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:30:19,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:30:19,249 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:30:19,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:30:19,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343308710] [2024-11-10 10:30:19,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343308710] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:30:19,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362995796] [2024-11-10 10:30:19,249 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 10:30:19,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:30:19,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:30:19,251 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:30:19,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-10 10:30:19,301 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 10:30:19,302 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:30:19,303 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-10 10:30:19,303 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:30:19,384 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:30:19,384 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:30:19,760 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:30:19,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362995796] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:30:19,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:30:19,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 14 [2024-11-10 10:30:19,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615963712] [2024-11-10 10:30:19,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:30:19,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-10 10:30:19,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:30:19,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-10 10:30:19,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-11-10 10:30:19,776 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-11-10 10:30:19,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 1532 transitions, 39953 flow. Second operand has 14 states, 14 states have (on average 9.642857142857142) internal successors, (135), 14 states have internal predecessors, (135), 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) [2024-11-10 10:30:19,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:30:19,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-11-10 10:30:19,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand