./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-nzb-file-subst.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 47976145f2a7f206dd7d2e7a0ffeac879f94f33f7a5b87161ebd997173567eb0 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 13:45:01,355 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 13:45:01,441 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 13:45:01,445 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 13:45:01,447 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 13:45:01,469 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 13:45:01,470 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 13:45:01,470 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 13:45:01,471 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 13:45:01,472 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 13:45:01,474 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 13:45:01,474 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 13:45:01,475 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 13:45:01,475 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 13:45:01,475 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 13:45:01,475 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 13:45:01,475 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 13:45:01,475 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 13:45:01,476 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 13:45:01,476 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 13:45:01,476 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 13:45:01,476 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 13:45:01,478 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 13:45:01,478 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 13:45:01,479 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 13:45:01,479 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 13:45:01,479 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 13:45:01,479 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 13:45:01,479 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 13:45:01,479 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 13:45:01,480 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 13:45:01,480 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 13:45:01,480 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:45:01,480 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 13:45:01,480 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 13:45:01,480 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 13:45:01,480 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 13:45:01,481 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 13:45:01,481 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 13:45:01,481 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 13:45:01,481 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 13:45:01,482 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 13:45:01,482 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47976145f2a7f206dd7d2e7a0ffeac879f94f33f7a5b87161ebd997173567eb0 [2024-11-22 13:45:01,662 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 13:45:01,682 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 13:45:01,686 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 13:45:01,687 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 13:45:01,688 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 13:45:01,689 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c [2024-11-22 13:45:03,111 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 13:45:03,276 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 13:45:03,281 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c [2024-11-22 13:45:03,292 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb69e4acb/80d6874394f24af2ad91ee9e8c375433/FLAG63799ff5b [2024-11-22 13:45:03,307 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb69e4acb/80d6874394f24af2ad91ee9e8c375433 [2024-11-22 13:45:03,309 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 13:45:03,310 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 13:45:03,311 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 13:45:03,311 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 13:45:03,315 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 13:45:03,316 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:45:03" (1/1) ... [2024-11-22 13:45:03,317 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e688f9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:45:03, skipping insertion in model container [2024-11-22 13:45:03,317 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:45:03" (1/1) ... [2024-11-22 13:45:03,336 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 13:45:03,539 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/chl-nzb-file-subst.wvr.c[6540,6553] [2024-11-22 13:45:03,550 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:45:03,558 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 13:45:03,606 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c[6540,6553] [2024-11-22 13:45:03,613 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:45:03,635 INFO L204 MainTranslator]: Completed translation [2024-11-22 13:45:03,638 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:45:03 WrapperNode [2024-11-22 13:45:03,638 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 13:45:03,639 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 13:45:03,639 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 13:45:03,640 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 13:45:03,645 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:45:03" (1/1) ... [2024-11-22 13:45:03,658 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:45:03" (1/1) ... [2024-11-22 13:45:03,693 INFO L138 Inliner]: procedures = 25, calls = 61, calls flagged for inlining = 28, calls inlined = 42, statements flattened = 603 [2024-11-22 13:45:03,695 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 13:45:03,696 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 13:45:03,696 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 13:45:03,696 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 13:45:03,706 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:45:03" (1/1) ... [2024-11-22 13:45:03,706 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:45:03" (1/1) ... [2024-11-22 13:45:03,711 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:45:03" (1/1) ... [2024-11-22 13:45:03,728 INFO L175 MemorySlicer]: Split 29 memory accesses to 2 slices as follows [2, 27]. 93 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-22 13:45:03,728 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:45:03" (1/1) ... [2024-11-22 13:45:03,728 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:45:03" (1/1) ... [2024-11-22 13:45:03,739 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:45:03" (1/1) ... [2024-11-22 13:45:03,750 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:45:03" (1/1) ... [2024-11-22 13:45:03,752 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:45:03" (1/1) ... [2024-11-22 13:45:03,754 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:45:03" (1/1) ... [2024-11-22 13:45:03,761 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 13:45:03,762 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 13:45:03,762 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 13:45:03,762 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 13:45:03,763 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:45:03" (1/1) ... [2024-11-22 13:45:03,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:45:03,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:45:03,790 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) [2024-11-22 13:45:03,796 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 [2024-11-22 13:45:03,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 13:45:03,836 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-22 13:45:03,836 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-22 13:45:03,837 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-22 13:45:03,837 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-22 13:45:03,837 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-22 13:45:03,837 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-22 13:45:03,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 13:45:03,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 13:45:03,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-22 13:45:03,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-22 13:45:03,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-22 13:45:03,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 13:45:03,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 13:45:03,838 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-22 13:45:03,838 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-22 13:45:03,841 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-22 13:45:03,952 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 13:45:03,955 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 13:45:04,499 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-22 13:45:04,499 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 13:45:05,062 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 13:45:05,063 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-22 13:45:05,063 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:45:05 BoogieIcfgContainer [2024-11-22 13:45:05,063 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 13:45:05,064 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 13:45:05,065 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 13:45:05,067 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 13:45:05,067 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:45:03" (1/3) ... [2024-11-22 13:45:05,068 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34d0210d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:45:05, skipping insertion in model container [2024-11-22 13:45:05,068 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:45:03" (2/3) ... [2024-11-22 13:45:05,068 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34d0210d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:45:05, skipping insertion in model container [2024-11-22 13:45:05,068 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:45:05" (3/3) ... [2024-11-22 13:45:05,069 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-subst.wvr.c [2024-11-22 13:45:05,082 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 13:45:05,082 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 13:45:05,082 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-22 13:45:05,173 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-22 13:45:05,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 49 transitions, 119 flow [2024-11-22 13:45:05,227 INFO L124 PetriNetUnfolderBase]: 12/46 cut-off events. [2024-11-22 13:45:05,227 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-22 13:45:05,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 12/46 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 69 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2024-11-22 13:45:05,230 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 49 transitions, 119 flow [2024-11-22 13:45:05,231 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 45 transitions, 108 flow [2024-11-22 13:45:05,237 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 13:45:05,241 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;@29fb0e55, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 13:45:05,242 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-22 13:45:05,254 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 13:45:05,254 INFO L124 PetriNetUnfolderBase]: 12/44 cut-off events. [2024-11-22 13:45:05,254 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-22 13:45:05,254 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:45:05,254 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] [2024-11-22 13:45:05,255 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)] === [2024-11-22 13:45:05,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:45:05,258 INFO L85 PathProgramCache]: Analyzing trace with hash 46384734, now seen corresponding path program 1 times [2024-11-22 13:45:05,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:45:05,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961460709] [2024-11-22 13:45:05,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:45:05,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:45:05,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:45:05,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:45:05,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:45:05,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961460709] [2024-11-22 13:45:05,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961460709] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:45:05,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:45:05,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 13:45:05,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346069473] [2024-11-22 13:45:05,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:45:06,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 13:45:06,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:45:06,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 13:45:06,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 13:45:06,027 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-22 13:45:06,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 45 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:45:06,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:45:06,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-22 13:45:06,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:45:06,696 INFO L124 PetriNetUnfolderBase]: 2373/3237 cut-off events. [2024-11-22 13:45:06,696 INFO L125 PetriNetUnfolderBase]: For 173/173 co-relation queries the response was YES. [2024-11-22 13:45:06,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6649 conditions, 3237 events. 2373/3237 cut-off events. For 173/173 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 12261 event pairs, 1692 based on Foata normal form. 0/2556 useless extension candidates. Maximal degree in co-relation 6206. Up to 3234 conditions per place. [2024-11-22 13:45:06,713 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 38 selfloop transitions, 6 changer transitions 0/45 dead transitions. [2024-11-22 13:45:06,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 45 transitions, 196 flow [2024-11-22 13:45:06,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 13:45:06,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 13:45:06,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 62 transitions. [2024-11-22 13:45:06,722 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4217687074829932 [2024-11-22 13:45:06,723 INFO L175 Difference]: Start difference. First operand has 43 places, 45 transitions, 108 flow. Second operand 3 states and 62 transitions. [2024-11-22 13:45:06,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 45 transitions, 196 flow [2024-11-22 13:45:06,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 45 transitions, 184 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-22 13:45:06,737 INFO L231 Difference]: Finished difference. Result has 40 places, 45 transitions, 122 flow [2024-11-22 13:45:06,739 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=40, PETRI_TRANSITIONS=45} [2024-11-22 13:45:06,747 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, -3 predicate places. [2024-11-22 13:45:06,747 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 45 transitions, 122 flow [2024-11-22 13:45:06,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:45:06,748 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:45:06,748 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:45:06,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 13:45:06,748 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)] === [2024-11-22 13:45:06,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:45:06,749 INFO L85 PathProgramCache]: Analyzing trace with hash -2050377923, now seen corresponding path program 1 times [2024-11-22 13:45:06,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:45:06,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610611206] [2024-11-22 13:45:06,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:45:06,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:45:06,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:45:06,925 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:45:06,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:45:06,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610611206] [2024-11-22 13:45:06,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610611206] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:45:06,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279791039] [2024-11-22 13:45:06,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:45:06,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:45:06,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:45:06,935 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) [2024-11-22 13:45:06,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 13:45:07,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:45:07,149 INFO L255 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-22 13:45:07,153 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:45:07,202 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:45:07,203 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:45:07,223 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:45:07,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279791039] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:45:07,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:45:07,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-11-22 13:45:07,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000619504] [2024-11-22 13:45:07,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:45:07,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 13:45:07,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:45:07,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 13:45:07,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2024-11-22 13:45:07,227 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-22 13:45:07,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 45 transitions, 122 flow. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:45:07,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:45:07,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-22 13:45:07,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:45:07,847 INFO L124 PetriNetUnfolderBase]: 2373/3246 cut-off events. [2024-11-22 13:45:07,848 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2024-11-22 13:45:07,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6574 conditions, 3246 events. 2373/3246 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 12260 event pairs, 1692 based on Foata normal form. 6/2573 useless extension candidates. Maximal degree in co-relation 6525. Up to 3234 conditions per place. [2024-11-22 13:45:07,861 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 38 selfloop transitions, 15 changer transitions 0/54 dead transitions. [2024-11-22 13:45:07,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 54 transitions, 264 flow [2024-11-22 13:45:07,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 13:45:07,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 13:45:07,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2024-11-22 13:45:07,863 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2925170068027211 [2024-11-22 13:45:07,863 INFO L175 Difference]: Start difference. First operand has 40 places, 45 transitions, 122 flow. Second operand 6 states and 86 transitions. [2024-11-22 13:45:07,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 54 transitions, 264 flow [2024-11-22 13:45:07,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 54 transitions, 258 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 13:45:07,866 INFO L231 Difference]: Finished difference. Result has 47 places, 54 transitions, 212 flow [2024-11-22 13:45:07,866 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=212, PETRI_PLACES=47, PETRI_TRANSITIONS=54} [2024-11-22 13:45:07,866 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 4 predicate places. [2024-11-22 13:45:07,866 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 54 transitions, 212 flow [2024-11-22 13:45:07,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:45:07,867 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:45:07,867 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:45:07,878 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 13:45:08,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:45:08,072 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)] === [2024-11-22 13:45:08,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:45:08,073 INFO L85 PathProgramCache]: Analyzing trace with hash 154946276, now seen corresponding path program 2 times [2024-11-22 13:45:08,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:45:08,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388075091] [2024-11-22 13:45:08,074 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:45:08,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:45:08,171 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 13:45:08,171 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:45:09,208 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-22 13:45:09,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:45:09,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388075091] [2024-11-22 13:45:09,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388075091] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:45:09,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:45:09,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:45:09,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138527725] [2024-11-22 13:45:09,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:45:09,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:45:09,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:45:09,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:45:09,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:45:09,210 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-22 13:45:09,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 54 transitions, 212 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:45:09,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:45:09,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-22 13:45:09,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:45:10,032 INFO L124 PetriNetUnfolderBase]: 3867/5443 cut-off events. [2024-11-22 13:45:10,032 INFO L125 PetriNetUnfolderBase]: For 119/119 co-relation queries the response was YES. [2024-11-22 13:45:10,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11022 conditions, 5443 events. 3867/5443 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 24842 event pairs, 1692 based on Foata normal form. 1/4412 useless extension candidates. Maximal degree in co-relation 10934. Up to 3132 conditions per place. [2024-11-22 13:45:10,053 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 111 selfloop transitions, 13 changer transitions 2/127 dead transitions. [2024-11-22 13:45:10,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 127 transitions, 623 flow [2024-11-22 13:45:10,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:45:10,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:45:10,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 135 transitions. [2024-11-22 13:45:10,055 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5510204081632653 [2024-11-22 13:45:10,055 INFO L175 Difference]: Start difference. First operand has 47 places, 54 transitions, 212 flow. Second operand 5 states and 135 transitions. [2024-11-22 13:45:10,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 127 transitions, 623 flow [2024-11-22 13:45:10,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 127 transitions, 599 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-11-22 13:45:10,058 INFO L231 Difference]: Finished difference. Result has 53 places, 66 transitions, 291 flow [2024-11-22 13:45:10,058 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=291, PETRI_PLACES=53, PETRI_TRANSITIONS=66} [2024-11-22 13:45:10,059 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 10 predicate places. [2024-11-22 13:45:10,059 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 66 transitions, 291 flow [2024-11-22 13:45:10,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:45:10,059 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:45:10,060 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:45:10,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 13:45:10,060 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)] === [2024-11-22 13:45:10,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:45:10,060 INFO L85 PathProgramCache]: Analyzing trace with hash -507933382, now seen corresponding path program 3 times [2024-11-22 13:45:10,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:45:10,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452003991] [2024-11-22 13:45:10,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:45:10,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:45:10,116 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-22 13:45:10,117 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:45:10,919 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-22 13:45:10,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:45:10,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452003991] [2024-11-22 13:45:10,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452003991] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:45:10,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:45:10,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:45:10,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836075456] [2024-11-22 13:45:10,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:45:10,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:45:10,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:45:10,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:45:10,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:45:10,922 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-22 13:45:10,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 66 transitions, 291 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:45:10,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:45:10,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-22 13:45:10,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:45:12,242 INFO L124 PetriNetUnfolderBase]: 5192/7477 cut-off events. [2024-11-22 13:45:12,242 INFO L125 PetriNetUnfolderBase]: For 3552/3552 co-relation queries the response was YES. [2024-11-22 13:45:12,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18381 conditions, 7477 events. 5192/7477 cut-off events. For 3552/3552 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 37296 event pairs, 2822 based on Foata normal form. 1/7298 useless extension candidates. Maximal degree in co-relation 18301. Up to 5118 conditions per place. [2024-11-22 13:45:12,273 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 110 selfloop transitions, 15 changer transitions 2/128 dead transitions. [2024-11-22 13:45:12,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 128 transitions, 726 flow [2024-11-22 13:45:12,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:45:12,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:45:12,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-11-22 13:45:12,275 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49387755102040815 [2024-11-22 13:45:12,275 INFO L175 Difference]: Start difference. First operand has 53 places, 66 transitions, 291 flow. Second operand 5 states and 121 transitions. [2024-11-22 13:45:12,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 128 transitions, 726 flow [2024-11-22 13:45:12,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 128 transitions, 717 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-22 13:45:12,281 INFO L231 Difference]: Finished difference. Result has 59 places, 77 transitions, 419 flow [2024-11-22 13:45:12,281 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=419, PETRI_PLACES=59, PETRI_TRANSITIONS=77} [2024-11-22 13:45:12,282 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 16 predicate places. [2024-11-22 13:45:12,282 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 77 transitions, 419 flow [2024-11-22 13:45:12,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:45:12,282 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:45:12,282 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:45:12,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 13:45:12,283 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)] === [2024-11-22 13:45:12,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:45:12,283 INFO L85 PathProgramCache]: Analyzing trace with hash -105214844, now seen corresponding path program 4 times [2024-11-22 13:45:12,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:45:12,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673156241] [2024-11-22 13:45:12,283 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:45:12,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:45:12,307 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:45:12,307 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:45:12,394 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-22 13:45:12,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:45:12,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673156241] [2024-11-22 13:45:12,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673156241] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:45:12,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180464253] [2024-11-22 13:45:12,395 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:45:12,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:45:12,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:45:12,397 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) [2024-11-22 13:45:12,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 13:45:12,543 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:45:12,543 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:45:12,545 INFO L255 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 13:45:12,546 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:45:12,587 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-22 13:45:12,587 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:45:12,612 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-22 13:45:12,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180464253] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:45:12,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:45:12,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-22 13:45:12,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317879176] [2024-11-22 13:45:12,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:45:12,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 13:45:12,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:45:12,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 13:45:12,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2024-11-22 13:45:12,614 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-22 13:45:12,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 77 transitions, 419 flow. Second operand has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 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) [2024-11-22 13:45:12,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:45:12,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-22 13:45:12,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:45:13,614 INFO L124 PetriNetUnfolderBase]: 5192/7480 cut-off events. [2024-11-22 13:45:13,614 INFO L125 PetriNetUnfolderBase]: For 8198/8198 co-relation queries the response was YES. [2024-11-22 13:45:13,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20736 conditions, 7480 events. 5192/7480 cut-off events. For 8198/8198 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 37099 event pairs, 3985 based on Foata normal form. 1/7301 useless extension candidates. Maximal degree in co-relation 20641. Up to 7458 conditions per place. [2024-11-22 13:45:13,640 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 61 selfloop transitions, 18 changer transitions 0/80 dead transitions. [2024-11-22 13:45:13,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 80 transitions, 595 flow [2024-11-22 13:45:13,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 13:45:13,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-22 13:45:13,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2024-11-22 13:45:13,641 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2536443148688047 [2024-11-22 13:45:13,641 INFO L175 Difference]: Start difference. First operand has 59 places, 77 transitions, 419 flow. Second operand 7 states and 87 transitions. [2024-11-22 13:45:13,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 80 transitions, 595 flow [2024-11-22 13:45:13,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 80 transitions, 588 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-22 13:45:13,659 INFO L231 Difference]: Finished difference. Result has 65 places, 80 transitions, 480 flow [2024-11-22 13:45:13,660 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=480, PETRI_PLACES=65, PETRI_TRANSITIONS=80} [2024-11-22 13:45:13,661 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 22 predicate places. [2024-11-22 13:45:13,661 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 80 transitions, 480 flow [2024-11-22 13:45:13,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 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) [2024-11-22 13:45:13,662 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:45:13,662 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:45:13,671 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 13:45:13,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:45:13,867 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)] === [2024-11-22 13:45:13,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:45:13,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1674624371, now seen corresponding path program 5 times [2024-11-22 13:45:13,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:45:13,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998240149] [2024-11-22 13:45:13,868 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:45:13,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:45:14,055 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-22 13:45:14,055 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:45:15,788 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-22 13:45:15,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:45:15,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998240149] [2024-11-22 13:45:15,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998240149] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:45:15,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459632564] [2024-11-22 13:45:15,790 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:45:15,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:45:15,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:45:15,792 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) [2024-11-22 13:45:15,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 13:45:16,078 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-22 13:45:16,079 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:45:16,081 INFO L255 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-22 13:45:16,085 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:45:16,916 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-22 13:45:16,917 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 13:45:16,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459632564] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:45:16,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 13:45:16,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2024-11-22 13:45:16,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999557463] [2024-11-22 13:45:16,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:45:16,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:45:16,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:45:16,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:45:16,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-22 13:45:16,919 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-22 13:45:16,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 80 transitions, 480 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:45:16,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:45:16,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-22 13:45:16,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:45:18,542 INFO L124 PetriNetUnfolderBase]: 6104/8923 cut-off events. [2024-11-22 13:45:18,542 INFO L125 PetriNetUnfolderBase]: For 8075/8075 co-relation queries the response was YES. [2024-11-22 13:45:18,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24142 conditions, 8923 events. 6104/8923 cut-off events. For 8075/8075 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 46564 event pairs, 3937 based on Foata normal form. 1/8694 useless extension candidates. Maximal degree in co-relation 24027. Up to 7114 conditions per place. [2024-11-22 13:45:18,580 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 115 selfloop transitions, 4 changer transitions 9/129 dead transitions. [2024-11-22 13:45:18,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 129 transitions, 903 flow [2024-11-22 13:45:18,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:45:18,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:45:18,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 106 transitions. [2024-11-22 13:45:18,583 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4326530612244898 [2024-11-22 13:45:18,583 INFO L175 Difference]: Start difference. First operand has 65 places, 80 transitions, 480 flow. Second operand 5 states and 106 transitions. [2024-11-22 13:45:18,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 129 transitions, 903 flow [2024-11-22 13:45:18,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 129 transitions, 867 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-11-22 13:45:18,610 INFO L231 Difference]: Finished difference. Result has 68 places, 82 transitions, 482 flow [2024-11-22 13:45:18,610 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=482, PETRI_PLACES=68, PETRI_TRANSITIONS=82} [2024-11-22 13:45:18,611 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 25 predicate places. [2024-11-22 13:45:18,611 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 82 transitions, 482 flow [2024-11-22 13:45:18,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:45:18,611 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:45:18,611 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:45:18,622 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 13:45:18,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:45:18,812 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)] === [2024-11-22 13:45:18,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:45:18,813 INFO L85 PathProgramCache]: Analyzing trace with hash -763439597, now seen corresponding path program 6 times [2024-11-22 13:45:18,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:45:18,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537878049] [2024-11-22 13:45:18,813 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 13:45:18,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:45:18,872 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-22 13:45:18,872 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:45:19,507 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-22 13:45:19,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:45:19,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537878049] [2024-11-22 13:45:19,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537878049] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:45:19,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:45:19,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:45:19,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488989718] [2024-11-22 13:45:19,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:45:19,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:45:19,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:45:19,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:45:19,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:45:19,510 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-22 13:45:19,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 82 transitions, 482 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:45:19,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:45:19,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-22 13:45:19,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:45:21,157 INFO L124 PetriNetUnfolderBase]: 8914/12896 cut-off events. [2024-11-22 13:45:21,157 INFO L125 PetriNetUnfolderBase]: For 15644/15644 co-relation queries the response was YES. [2024-11-22 13:45:21,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35672 conditions, 12896 events. 8914/12896 cut-off events. For 15644/15644 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 72556 event pairs, 3273 based on Foata normal form. 1/12567 useless extension candidates. Maximal degree in co-relation 35573. Up to 6024 conditions per place. [2024-11-22 13:45:21,217 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 130 selfloop transitions, 32 changer transitions 2/165 dead transitions. [2024-11-22 13:45:21,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 165 transitions, 1181 flow [2024-11-22 13:45:21,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:45:21,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:45:21,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2024-11-22 13:45:21,219 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5346938775510204 [2024-11-22 13:45:21,219 INFO L175 Difference]: Start difference. First operand has 68 places, 82 transitions, 482 flow. Second operand 5 states and 131 transitions. [2024-11-22 13:45:21,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 165 transitions, 1181 flow [2024-11-22 13:45:21,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 165 transitions, 1170 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-22 13:45:21,247 INFO L231 Difference]: Finished difference. Result has 73 places, 107 transitions, 820 flow [2024-11-22 13:45:21,247 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=820, PETRI_PLACES=73, PETRI_TRANSITIONS=107} [2024-11-22 13:45:21,248 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 30 predicate places. [2024-11-22 13:45:21,248 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 107 transitions, 820 flow [2024-11-22 13:45:21,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:45:21,248 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:45:21,248 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:45:21,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 13:45:21,248 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)] === [2024-11-22 13:45:21,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:45:21,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1901130979, now seen corresponding path program 7 times [2024-11-22 13:45:21,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:45:21,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142090215] [2024-11-22 13:45:21,249 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 13:45:21,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:45:21,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:45:22,912 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-22 13:45:22,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:45:22,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142090215] [2024-11-22 13:45:22,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142090215] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:45:22,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:45:22,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:45:22,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256559935] [2024-11-22 13:45:22,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:45:22,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:45:22,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:45:22,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:45:22,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:45:22,913 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-22 13:45:22,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 107 transitions, 820 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:45:22,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:45:22,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-22 13:45:22,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:45:24,696 INFO L124 PetriNetUnfolderBase]: 9491/13786 cut-off events. [2024-11-22 13:45:24,696 INFO L125 PetriNetUnfolderBase]: For 27219/27219 co-relation queries the response was YES. [2024-11-22 13:45:24,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42109 conditions, 13786 events. 9491/13786 cut-off events. For 27219/27219 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 77785 event pairs, 4733 based on Foata normal form. 1/13457 useless extension candidates. Maximal degree in co-relation 42006. Up to 7912 conditions per place. [2024-11-22 13:45:24,746 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 141 selfloop transitions, 31 changer transitions 2/175 dead transitions. [2024-11-22 13:45:24,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 175 transitions, 1465 flow [2024-11-22 13:45:24,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:45:24,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:45:24,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 135 transitions. [2024-11-22 13:45:24,748 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5510204081632653 [2024-11-22 13:45:24,748 INFO L175 Difference]: Start difference. First operand has 73 places, 107 transitions, 820 flow. Second operand 5 states and 135 transitions. [2024-11-22 13:45:24,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 175 transitions, 1465 flow [2024-11-22 13:45:24,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 175 transitions, 1453 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-11-22 13:45:24,808 INFO L231 Difference]: Finished difference. Result has 80 places, 114 transitions, 1009 flow [2024-11-22 13:45:24,808 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=812, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1009, PETRI_PLACES=80, PETRI_TRANSITIONS=114} [2024-11-22 13:45:24,809 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 37 predicate places. [2024-11-22 13:45:24,810 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 114 transitions, 1009 flow [2024-11-22 13:45:24,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:45:24,811 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:45:24,811 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:45:24,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 13:45:24,811 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)] === [2024-11-22 13:45:24,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:45:24,811 INFO L85 PathProgramCache]: Analyzing trace with hash 186084019, now seen corresponding path program 8 times [2024-11-22 13:45:24,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:45:24,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678475323] [2024-11-22 13:45:24,811 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:45:24,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:45:24,859 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 13:45:24,859 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:45:25,319 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-22 13:45:25,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:45:25,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678475323] [2024-11-22 13:45:25,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678475323] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:45:25,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:45:25,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:45:25,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719239267] [2024-11-22 13:45:25,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:45:25,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:45:25,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:45:25,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:45:25,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:45:25,323 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-22 13:45:25,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 114 transitions, 1009 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:45:25,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:45:25,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-22 13:45:25,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:45:27,817 INFO L124 PetriNetUnfolderBase]: 13088/18846 cut-off events. [2024-11-22 13:45:27,817 INFO L125 PetriNetUnfolderBase]: For 57077/57077 co-relation queries the response was YES. [2024-11-22 13:45:27,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62012 conditions, 18846 events. 13088/18846 cut-off events. For 57077/57077 co-relation queries the response was YES. Maximal size of possible extension queue 705. Compared 108470 event pairs, 5652 based on Foata normal form. 1/18377 useless extension candidates. Maximal degree in co-relation 61905. Up to 8728 conditions per place. [2024-11-22 13:45:27,909 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 152 selfloop transitions, 47 changer transitions 2/202 dead transitions. [2024-11-22 13:45:27,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 202 transitions, 1988 flow [2024-11-22 13:45:27,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:45:27,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:45:27,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2024-11-22 13:45:27,911 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5265306122448979 [2024-11-22 13:45:27,911 INFO L175 Difference]: Start difference. First operand has 80 places, 114 transitions, 1009 flow. Second operand 5 states and 129 transitions. [2024-11-22 13:45:27,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 202 transitions, 1988 flow [2024-11-22 13:45:28,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 202 transitions, 1961 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-11-22 13:45:28,010 INFO L231 Difference]: Finished difference. Result has 87 places, 140 transitions, 1516 flow [2024-11-22 13:45:28,010 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=996, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1516, PETRI_PLACES=87, PETRI_TRANSITIONS=140} [2024-11-22 13:45:28,010 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 44 predicate places. [2024-11-22 13:45:28,010 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 140 transitions, 1516 flow [2024-11-22 13:45:28,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:45:28,011 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:45:28,011 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:45:28,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 13:45:28,011 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)] === [2024-11-22 13:45:28,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:45:28,012 INFO L85 PathProgramCache]: Analyzing trace with hash -993225584, now seen corresponding path program 1 times [2024-11-22 13:45:28,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:45:28,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913502069] [2024-11-22 13:45:28,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:45:28,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:45:28,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:45:28,225 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-22 13:45:28,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:45:28,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913502069] [2024-11-22 13:45:28,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913502069] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:45:28,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:45:28,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 13:45:28,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619039951] [2024-11-22 13:45:28,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:45:28,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:45:28,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:45:28,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:45:28,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:45:28,227 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-22 13:45:28,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 140 transitions, 1516 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:45:28,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:45:28,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-22 13:45:28,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:45:31,809 INFO L124 PetriNetUnfolderBase]: 13997/20196 cut-off events. [2024-11-22 13:45:31,810 INFO L125 PetriNetUnfolderBase]: For 84934/84934 co-relation queries the response was YES. [2024-11-22 13:45:31,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71471 conditions, 20196 events. 13997/20196 cut-off events. For 84934/84934 co-relation queries the response was YES. Maximal size of possible extension queue 775. Compared 118690 event pairs, 6990 based on Foata normal form. 5/19731 useless extension candidates. Maximal degree in co-relation 71361. Up to 11172 conditions per place. [2024-11-22 13:45:31,919 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 130 selfloop transitions, 5 changer transitions 54/190 dead transitions. [2024-11-22 13:45:31,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 190 transitions, 2214 flow [2024-11-22 13:45:31,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 13:45:31,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 13:45:31,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2024-11-22 13:45:31,920 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5204081632653061 [2024-11-22 13:45:31,920 INFO L175 Difference]: Start difference. First operand has 87 places, 140 transitions, 1516 flow. Second operand 4 states and 102 transitions. [2024-11-22 13:45:31,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 190 transitions, 2214 flow [2024-11-22 13:45:32,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 190 transitions, 2172 flow, removed 21 selfloop flow, removed 0 redundant places. [2024-11-22 13:45:32,184 INFO L231 Difference]: Finished difference. Result has 92 places, 113 transitions, 1073 flow [2024-11-22 13:45:32,185 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1480, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1073, PETRI_PLACES=92, PETRI_TRANSITIONS=113} [2024-11-22 13:45:32,185 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 49 predicate places. [2024-11-22 13:45:32,185 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 113 transitions, 1073 flow [2024-11-22 13:45:32,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:45:32,185 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:45:32,185 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:45:32,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 13:45:32,186 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)] === [2024-11-22 13:45:32,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:45:32,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1296232520, now seen corresponding path program 1 times [2024-11-22 13:45:32,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:45:32,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552683985] [2024-11-22 13:45:32,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:45:32,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:45:32,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:45:32,444 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-22 13:45:32,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:45:32,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552683985] [2024-11-22 13:45:32,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552683985] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:45:32,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:45:32,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 13:45:32,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797708404] [2024-11-22 13:45:32,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:45:32,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:45:32,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:45:32,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:45:32,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:45:32,447 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-22 13:45:32,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 113 transitions, 1073 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:45:32,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:45:32,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-22 13:45:32,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:45:35,030 INFO L124 PetriNetUnfolderBase]: 11779/17005 cut-off events. [2024-11-22 13:45:35,030 INFO L125 PetriNetUnfolderBase]: For 68114/68114 co-relation queries the response was YES. [2024-11-22 13:45:35,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58540 conditions, 17005 events. 11779/17005 cut-off events. For 68114/68114 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 97354 event pairs, 4373 based on Foata normal form. 3/16538 useless extension candidates. Maximal degree in co-relation 58427. Up to 13000 conditions per place. [2024-11-22 13:45:35,139 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 126 selfloop transitions, 9 changer transitions 30/166 dead transitions. [2024-11-22 13:45:35,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 166 transitions, 1778 flow [2024-11-22 13:45:35,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 13:45:35,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 13:45:35,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2024-11-22 13:45:35,141 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5204081632653061 [2024-11-22 13:45:35,141 INFO L175 Difference]: Start difference. First operand has 92 places, 113 transitions, 1073 flow. Second operand 4 states and 102 transitions. [2024-11-22 13:45:35,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 166 transitions, 1778 flow [2024-11-22 13:45:35,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 166 transitions, 1694 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-11-22 13:45:35,278 INFO L231 Difference]: Finished difference. Result has 92 places, 111 transitions, 1050 flow [2024-11-22 13:45:35,278 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1011, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1050, PETRI_PLACES=92, PETRI_TRANSITIONS=111} [2024-11-22 13:45:35,279 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 49 predicate places. [2024-11-22 13:45:35,279 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 111 transitions, 1050 flow [2024-11-22 13:45:35,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:45:35,279 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:45:35,279 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:45:35,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 13:45:35,280 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)] === [2024-11-22 13:45:35,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:45:35,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1060390130, now seen corresponding path program 2 times [2024-11-22 13:45:35,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:45:35,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83275715] [2024-11-22 13:45:35,280 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:45:35,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:45:35,305 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 13:45:35,305 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:45:35,542 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-22 13:45:35,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:45:35,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83275715] [2024-11-22 13:45:35,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83275715] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:45:35,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:45:35,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 13:45:35,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11424789] [2024-11-22 13:45:35,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:45:35,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:45:35,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:45:35,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:45:35,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:45:35,546 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-22 13:45:35,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 111 transitions, 1050 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:45:35,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:45:35,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-22 13:45:35,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:45:37,778 INFO L124 PetriNetUnfolderBase]: 10356/14965 cut-off events. [2024-11-22 13:45:37,778 INFO L125 PetriNetUnfolderBase]: For 51433/51433 co-relation queries the response was YES. [2024-11-22 13:45:37,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50142 conditions, 14965 events. 10356/14965 cut-off events. For 51433/51433 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 82959 event pairs, 4675 based on Foata normal form. 4/14499 useless extension candidates. Maximal degree in co-relation 50042. Up to 10442 conditions per place. [2024-11-22 13:45:37,864 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 110 selfloop transitions, 11 changer transitions 48/170 dead transitions. [2024-11-22 13:45:37,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 170 transitions, 1862 flow [2024-11-22 13:45:37,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 13:45:37,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 13:45:37,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 101 transitions. [2024-11-22 13:45:37,865 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5153061224489796 [2024-11-22 13:45:37,865 INFO L175 Difference]: Start difference. First operand has 92 places, 111 transitions, 1050 flow. Second operand 4 states and 101 transitions. [2024-11-22 13:45:37,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 170 transitions, 1862 flow [2024-11-22 13:45:37,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 170 transitions, 1841 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-22 13:45:37,949 INFO L231 Difference]: Finished difference. Result has 94 places, 99 transitions, 946 flow [2024-11-22 13:45:37,950 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1039, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=946, PETRI_PLACES=94, PETRI_TRANSITIONS=99} [2024-11-22 13:45:37,950 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 51 predicate places. [2024-11-22 13:45:37,950 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 99 transitions, 946 flow [2024-11-22 13:45:37,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:45:37,950 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:45:37,950 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:45:37,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 13:45:37,951 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)] === [2024-11-22 13:45:37,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:45:37,951 INFO L85 PathProgramCache]: Analyzing trace with hash 816489292, now seen corresponding path program 1 times [2024-11-22 13:45:37,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:45:37,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441356953] [2024-11-22 13:45:37,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:45:37,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:45:37,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:45:38,121 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-22 13:45:38,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:45:38,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441356953] [2024-11-22 13:45:38,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441356953] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:45:38,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:45:38,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 13:45:38,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387942764] [2024-11-22 13:45:38,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:45:38,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 13:45:38,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:45:38,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 13:45:38,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 13:45:38,123 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-22 13:45:38,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 99 transitions, 946 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2024-11-22 13:45:38,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:45:38,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-22 13:45:38,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:45:40,636 INFO L124 PetriNetUnfolderBase]: 11845/16955 cut-off events. [2024-11-22 13:45:40,636 INFO L125 PetriNetUnfolderBase]: For 52567/52567 co-relation queries the response was YES. [2024-11-22 13:45:40,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55100 conditions, 16955 events. 11845/16955 cut-off events. For 52567/52567 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 93527 event pairs, 7464 based on Foata normal form. 470/16485 useless extension candidates. Maximal degree in co-relation 54999. Up to 12284 conditions per place. [2024-11-22 13:45:40,793 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 111 selfloop transitions, 19 changer transitions 1/132 dead transitions. [2024-11-22 13:45:40,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 132 transitions, 1434 flow [2024-11-22 13:45:40,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 13:45:40,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 13:45:40,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2024-11-22 13:45:40,794 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5306122448979592 [2024-11-22 13:45:40,794 INFO L175 Difference]: Start difference. First operand has 94 places, 99 transitions, 946 flow. Second operand 3 states and 78 transitions. [2024-11-22 13:45:40,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 132 transitions, 1434 flow [2024-11-22 13:45:40,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 132 transitions, 1311 flow, removed 36 selfloop flow, removed 8 redundant places. [2024-11-22 13:45:40,985 INFO L231 Difference]: Finished difference. Result has 85 places, 100 transitions, 915 flow [2024-11-22 13:45:40,986 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=852, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=915, PETRI_PLACES=85, PETRI_TRANSITIONS=100} [2024-11-22 13:45:40,986 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 42 predicate places. [2024-11-22 13:45:40,987 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 100 transitions, 915 flow [2024-11-22 13:45:40,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2024-11-22 13:45:40,987 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:45:40,987 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:45:40,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-22 13:45:40,987 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)] === [2024-11-22 13:45:40,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:45:40,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1987248996, now seen corresponding path program 2 times [2024-11-22 13:45:40,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:45:40,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011583078] [2024-11-22 13:45:40,988 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:45:40,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:45:41,009 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 13:45:41,009 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:45:41,154 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-22 13:45:41,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:45:41,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011583078] [2024-11-22 13:45:41,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011583078] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:45:41,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:45:41,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:45:41,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91070250] [2024-11-22 13:45:41,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:45:41,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:45:41,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:45:41,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:45:41,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:45:41,158 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-22 13:45:41,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 100 transitions, 915 flow. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:45:41,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:45:41,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-22 13:45:41,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:45:45,239 INFO L124 PetriNetUnfolderBase]: 16146/23009 cut-off events. [2024-11-22 13:45:45,240 INFO L125 PetriNetUnfolderBase]: For 51533/51533 co-relation queries the response was YES. [2024-11-22 13:45:45,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72347 conditions, 23009 events. 16146/23009 cut-off events. For 51533/51533 co-relation queries the response was YES. Maximal size of possible extension queue 681. Compared 131620 event pairs, 5174 based on Foata normal form. 1/23010 useless extension candidates. Maximal degree in co-relation 72238. Up to 10376 conditions per place. [2024-11-22 13:45:45,381 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 146 selfloop transitions, 26 changer transitions 10/183 dead transitions. [2024-11-22 13:45:45,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 183 transitions, 1731 flow [2024-11-22 13:45:45,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:45:45,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:45:45,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-11-22 13:45:45,383 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5224489795918368 [2024-11-22 13:45:45,383 INFO L175 Difference]: Start difference. First operand has 85 places, 100 transitions, 915 flow. Second operand 5 states and 128 transitions. [2024-11-22 13:45:45,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 183 transitions, 1731 flow [2024-11-22 13:45:45,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 183 transitions, 1710 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 13:45:45,443 INFO L231 Difference]: Finished difference. Result has 91 places, 108 transitions, 1043 flow [2024-11-22 13:45:45,443 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=896, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1043, PETRI_PLACES=91, PETRI_TRANSITIONS=108} [2024-11-22 13:45:45,444 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 48 predicate places. [2024-11-22 13:45:45,444 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 108 transitions, 1043 flow [2024-11-22 13:45:45,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:45:45,445 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:45:45,445 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:45:45,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-22 13:45:45,445 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)] === [2024-11-22 13:45:45,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:45:45,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1580255732, now seen corresponding path program 3 times [2024-11-22 13:45:45,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:45:45,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748308335] [2024-11-22 13:45:45,446 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:45:45,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:45:45,479 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-22 13:45:45,479 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:45:45,636 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-22 13:45:45,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:45:45,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748308335] [2024-11-22 13:45:45,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748308335] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:45:45,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:45:45,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:45:45,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262165314] [2024-11-22 13:45:45,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:45:45,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:45:45,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:45:45,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:45:45,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:45:45,641 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-22 13:45:45,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 108 transitions, 1043 flow. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:45:45,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:45:45,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-22 13:45:45,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:45:49,641 INFO L124 PetriNetUnfolderBase]: 17367/24856 cut-off events. [2024-11-22 13:45:49,642 INFO L125 PetriNetUnfolderBase]: For 63414/63414 co-relation queries the response was YES. [2024-11-22 13:45:49,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81202 conditions, 24856 events. 17367/24856 cut-off events. For 63414/63414 co-relation queries the response was YES. Maximal size of possible extension queue 782. Compared 146524 event pairs, 5350 based on Foata normal form. 2/24858 useless extension candidates. Maximal degree in co-relation 81090. Up to 10340 conditions per place. [2024-11-22 13:45:49,762 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 172 selfloop transitions, 36 changer transitions 16/225 dead transitions. [2024-11-22 13:45:49,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 225 transitions, 2107 flow [2024-11-22 13:45:49,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 13:45:49,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 13:45:49,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 167 transitions. [2024-11-22 13:45:49,763 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5680272108843537 [2024-11-22 13:45:49,763 INFO L175 Difference]: Start difference. First operand has 91 places, 108 transitions, 1043 flow. Second operand 6 states and 167 transitions. [2024-11-22 13:45:49,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 225 transitions, 2107 flow [2024-11-22 13:45:49,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 225 transitions, 2087 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-11-22 13:45:49,821 INFO L231 Difference]: Finished difference. Result has 97 places, 113 transitions, 1163 flow [2024-11-22 13:45:49,821 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1029, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1163, PETRI_PLACES=97, PETRI_TRANSITIONS=113} [2024-11-22 13:45:49,822 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 54 predicate places. [2024-11-22 13:45:49,822 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 113 transitions, 1163 flow [2024-11-22 13:45:49,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:45:49,822 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:45:49,822 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:45:49,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-22 13:45:49,823 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)] === [2024-11-22 13:45:49,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:45:49,823 INFO L85 PathProgramCache]: Analyzing trace with hash 963844784, now seen corresponding path program 1 times [2024-11-22 13:45:49,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:45:49,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657797057] [2024-11-22 13:45:49,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:45:49,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:45:50,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:45:50,263 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-22 13:45:50,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:45:50,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657797057] [2024-11-22 13:45:50,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657797057] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:45:50,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:45:50,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:45:50,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757244075] [2024-11-22 13:45:50,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:45:50,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:45:50,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:45:50,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:45:50,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:45:50,266 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-22 13:45:50,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 113 transitions, 1163 flow. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:45:50,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:45:50,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-22 13:45:50,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand