./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/test-easy10.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/test-easy10.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 58ff882a2a27d6746f141646b2befb8bb2c361fcab13fbe9966095432ec78b12 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 17:08:34,795 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 17:08:34,873 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 17:08:34,879 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 17:08:34,879 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 17:08:34,909 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 17:08:34,910 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 17:08:34,910 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 17:08:34,911 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 17:08:34,915 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 17:08:34,915 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 17:08:34,915 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 17:08:34,916 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 17:08:34,917 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 17:08:34,918 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 17:08:34,918 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 17:08:34,918 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 17:08:34,919 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 17:08:34,919 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 17:08:34,919 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 17:08:34,919 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 17:08:34,920 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 17:08:34,920 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 17:08:34,920 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 17:08:34,921 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 17:08:34,921 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 17:08:34,921 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 17:08:34,922 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 17:08:34,922 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 17:08:34,922 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 17:08:34,923 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 17:08:34,924 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 17:08:34,924 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 17:08:34,924 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 17:08:34,924 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 17:08:34,925 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 17:08:34,925 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 17:08:34,925 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 17:08:34,925 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 17:08:34,926 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 17:08:34,926 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 17:08:34,926 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 17:08:34,926 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 17:08:34,927 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 58ff882a2a27d6746f141646b2befb8bb2c361fcab13fbe9966095432ec78b12 [2024-06-27 17:08:35,193 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 17:08:35,222 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 17:08:35,224 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 17:08:35,225 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 17:08:35,225 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 17:08:35,226 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy10.wvr.c [2024-06-27 17:08:36,324 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 17:08:36,524 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 17:08:36,525 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy10.wvr.c [2024-06-27 17:08:36,533 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b707bfb16/16950e323fd04f929dade0b887b0aee7/FLAGadd83435a [2024-06-27 17:08:36,543 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b707bfb16/16950e323fd04f929dade0b887b0aee7 [2024-06-27 17:08:36,545 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 17:08:36,546 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-06-27 17:08:36,547 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 17:08:36,547 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 17:08:36,552 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 17:08:36,552 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 05:08:36" (1/1) ... [2024-06-27 17:08:36,553 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25cd2c3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:08:36, skipping insertion in model container [2024-06-27 17:08:36,553 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 05:08:36" (1/1) ... [2024-06-27 17:08:36,584 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 17:08:36,759 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy10.wvr.c[3959,3972] [2024-06-27 17:08:36,763 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 17:08:36,773 INFO L202 MainTranslator]: Completed pre-run [2024-06-27 17:08:36,794 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy10.wvr.c[3959,3972] [2024-06-27 17:08:36,795 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 17:08:36,810 INFO L206 MainTranslator]: Completed translation [2024-06-27 17:08:36,811 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:08:36 WrapperNode [2024-06-27 17:08:36,811 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 17:08:36,812 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 17:08:36,812 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 17:08:36,812 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 17:08:36,819 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:08:36" (1/1) ... [2024-06-27 17:08:36,841 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:08:36" (1/1) ... [2024-06-27 17:08:36,876 INFO L138 Inliner]: procedures = 22, calls = 64, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 171 [2024-06-27 17:08:36,884 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 17:08:36,885 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 17:08:36,885 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 17:08:36,885 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 17:08:36,896 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:08:36" (1/1) ... [2024-06-27 17:08:36,897 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:08:36" (1/1) ... [2024-06-27 17:08:36,909 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:08:36" (1/1) ... [2024-06-27 17:08:36,922 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 17:08:36,924 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:08:36" (1/1) ... [2024-06-27 17:08:36,925 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:08:36" (1/1) ... [2024-06-27 17:08:36,931 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:08:36" (1/1) ... [2024-06-27 17:08:36,933 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:08:36" (1/1) ... [2024-06-27 17:08:36,934 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:08:36" (1/1) ... [2024-06-27 17:08:36,935 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:08:36" (1/1) ... [2024-06-27 17:08:36,937 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 17:08:36,938 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 17:08:36,938 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 17:08:36,938 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 17:08:36,939 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:08:36" (1/1) ... [2024-06-27 17:08:36,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 17:08:36,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:08:36,990 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 17:08:36,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 17:08:37,046 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 17:08:37,046 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-27 17:08:37,047 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-27 17:08:37,047 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-27 17:08:37,047 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-27 17:08:37,047 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-06-27 17:08:37,048 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-06-27 17:08:37,049 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-06-27 17:08:37,050 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-06-27 17:08:37,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 17:08:37,050 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 17:08:37,050 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 17:08:37,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 17:08:37,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 17:08:37,052 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 17:08:37,158 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 17:08:37,159 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 17:08:37,350 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 17:08:37,351 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 17:08:37,495 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 17:08:37,495 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 17:08:37,496 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 05:08:37 BoogieIcfgContainer [2024-06-27 17:08:37,496 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 17:08:37,498 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 17:08:37,498 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 17:08:37,501 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 17:08:37,501 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 05:08:36" (1/3) ... [2024-06-27 17:08:37,502 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@119e334d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 05:08:37, skipping insertion in model container [2024-06-27 17:08:37,502 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:08:36" (2/3) ... [2024-06-27 17:08:37,503 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@119e334d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 05:08:37, skipping insertion in model container [2024-06-27 17:08:37,503 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 05:08:37" (3/3) ... [2024-06-27 17:08:37,504 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy10.wvr.c [2024-06-27 17:08:37,512 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-06-27 17:08:37,520 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 17:08:37,521 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-06-27 17:08:37,521 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 17:08:37,610 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-06-27 17:08:37,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 52 transitions, 132 flow [2024-06-27 17:08:37,709 INFO L124 PetriNetUnfolderBase]: 0/48 cut-off events. [2024-06-27 17:08:37,709 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-27 17:08:37,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 48 events. 0/48 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 101 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-06-27 17:08:37,712 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 52 transitions, 132 flow [2024-06-27 17:08:37,716 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 47 transitions, 118 flow [2024-06-27 17:08:37,732 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 17:08:37,741 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@35e70b86, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 17:08:37,742 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-06-27 17:08:37,772 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 17:08:37,773 INFO L124 PetriNetUnfolderBase]: 0/46 cut-off events. [2024-06-27 17:08:37,773 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-27 17:08:37,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:08:37,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:08:37,775 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-06-27 17:08:37,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:08:37,780 INFO L85 PathProgramCache]: Analyzing trace with hash -571517718, now seen corresponding path program 1 times [2024-06-27 17:08:37,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:08:37,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329613858] [2024-06-27 17:08:37,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:08:37,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:08:37,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:08:38,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:38,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:08:38,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329613858] [2024-06-27 17:08:38,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329613858] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:08:38,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:08:38,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 17:08:38,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544459216] [2024-06-27 17:08:38,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:08:38,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 17:08:38,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:08:38,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 17:08:38,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 17:08:38,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 52 [2024-06-27 17:08:38,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 47 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:08:38,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:08:38,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 52 [2024-06-27 17:08:38,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:08:38,715 INFO L124 PetriNetUnfolderBase]: 637/1259 cut-off events. [2024-06-27 17:08:38,716 INFO L125 PetriNetUnfolderBase]: For 147/147 co-relation queries the response was YES. [2024-06-27 17:08:38,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2366 conditions, 1259 events. 637/1259 cut-off events. For 147/147 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 7968 event pairs, 160 based on Foata normal form. 9/1195 useless extension candidates. Maximal degree in co-relation 2039. Up to 825 conditions per place. [2024-06-27 17:08:38,734 INFO L140 encePairwiseOnDemand]: 49/52 looper letters, 30 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2024-06-27 17:08:38,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 56 transitions, 209 flow [2024-06-27 17:08:38,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 17:08:38,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 17:08:38,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 117 transitions. [2024-06-27 17:08:38,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-06-27 17:08:38,748 INFO L175 Difference]: Start difference. First operand has 60 places, 47 transitions, 118 flow. Second operand 3 states and 117 transitions. [2024-06-27 17:08:38,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 56 transitions, 209 flow [2024-06-27 17:08:38,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 56 transitions, 187 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 17:08:38,759 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 110 flow [2024-06-27 17:08:38,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2024-06-27 17:08:38,764 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -5 predicate places. [2024-06-27 17:08:38,765 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 110 flow [2024-06-27 17:08:38,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:08:38,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:08:38,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:08:38,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 17:08:38,767 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-06-27 17:08:38,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:08:38,768 INFO L85 PathProgramCache]: Analyzing trace with hash 683831154, now seen corresponding path program 2 times [2024-06-27 17:08:38,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:08:38,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426192298] [2024-06-27 17:08:38,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:08:38,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:08:38,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:08:38,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:38,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:08:38,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426192298] [2024-06-27 17:08:38,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426192298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:08:38,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:08:38,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 17:08:38,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778142527] [2024-06-27 17:08:38,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:08:38,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 17:08:38,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:08:38,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 17:08:38,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 17:08:38,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 52 [2024-06-27 17:08:38,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:08:38,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:08:38,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 52 [2024-06-27 17:08:38,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:08:39,138 INFO L124 PetriNetUnfolderBase]: 597/1161 cut-off events. [2024-06-27 17:08:39,138 INFO L125 PetriNetUnfolderBase]: For 91/91 co-relation queries the response was YES. [2024-06-27 17:08:39,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2184 conditions, 1161 events. 597/1161 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7158 event pairs, 424 based on Foata normal form. 24/1137 useless extension candidates. Maximal degree in co-relation 2045. Up to 853 conditions per place. [2024-06-27 17:08:39,149 INFO L140 encePairwiseOnDemand]: 49/52 looper letters, 30 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2024-06-27 17:08:39,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 56 transitions, 196 flow [2024-06-27 17:08:39,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 17:08:39,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 17:08:39,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 117 transitions. [2024-06-27 17:08:39,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-06-27 17:08:39,156 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 110 flow. Second operand 3 states and 117 transitions. [2024-06-27 17:08:39,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 56 transitions, 196 flow [2024-06-27 17:08:39,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 56 transitions, 192 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 17:08:39,160 INFO L231 Difference]: Finished difference. Result has 56 places, 47 transitions, 114 flow [2024-06-27 17:08:39,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=56, PETRI_TRANSITIONS=47} [2024-06-27 17:08:39,162 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -4 predicate places. [2024-06-27 17:08:39,162 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 47 transitions, 114 flow [2024-06-27 17:08:39,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:08:39,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:08:39,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:08:39,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 17:08:39,164 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-06-27 17:08:39,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:08:39,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1382445256, now seen corresponding path program 3 times [2024-06-27 17:08:39,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:08:39,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885903108] [2024-06-27 17:08:39,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:08:39,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:08:39,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:08:39,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:39,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:08:39,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885903108] [2024-06-27 17:08:39,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885903108] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:08:39,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:08:39,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 17:08:39,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510927884] [2024-06-27 17:08:39,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:08:39,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 17:08:39,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:08:39,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 17:08:39,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 17:08:39,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 52 [2024-06-27 17:08:39,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 47 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:08:39,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:08:39,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 52 [2024-06-27 17:08:39,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:08:39,526 INFO L124 PetriNetUnfolderBase]: 599/1145 cut-off events. [2024-06-27 17:08:39,527 INFO L125 PetriNetUnfolderBase]: For 144/149 co-relation queries the response was YES. [2024-06-27 17:08:39,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2253 conditions, 1145 events. 599/1145 cut-off events. For 144/149 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 6908 event pairs, 142 based on Foata normal form. 23/1119 useless extension candidates. Maximal degree in co-relation 2222. Up to 857 conditions per place. [2024-06-27 17:08:39,534 INFO L140 encePairwiseOnDemand]: 49/52 looper letters, 32 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2024-06-27 17:08:39,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 58 transitions, 209 flow [2024-06-27 17:08:39,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 17:08:39,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 17:08:39,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2024-06-27 17:08:39,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7628205128205128 [2024-06-27 17:08:39,536 INFO L175 Difference]: Start difference. First operand has 56 places, 47 transitions, 114 flow. Second operand 3 states and 119 transitions. [2024-06-27 17:08:39,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 58 transitions, 209 flow [2024-06-27 17:08:39,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 58 transitions, 205 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 17:08:39,538 INFO L231 Difference]: Finished difference. Result has 57 places, 47 transitions, 118 flow [2024-06-27 17:08:39,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=57, PETRI_TRANSITIONS=47} [2024-06-27 17:08:39,539 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -3 predicate places. [2024-06-27 17:08:39,539 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 47 transitions, 118 flow [2024-06-27 17:08:39,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:08:39,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:08:39,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:08:39,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 17:08:39,541 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-06-27 17:08:39,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:08:39,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1544007566, now seen corresponding path program 4 times [2024-06-27 17:08:39,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:08:39,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82847206] [2024-06-27 17:08:39,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:08:39,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:08:39,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:08:39,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:39,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:08:39,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82847206] [2024-06-27 17:08:39,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82847206] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:08:39,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:08:39,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 17:08:39,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348460127] [2024-06-27 17:08:39,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:08:39,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 17:08:39,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:08:39,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 17:08:39,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 17:08:39,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 52 [2024-06-27 17:08:39,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 47 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:08:39,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:08:39,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 52 [2024-06-27 17:08:39,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:08:39,771 INFO L124 PetriNetUnfolderBase]: 507/1019 cut-off events. [2024-06-27 17:08:39,771 INFO L125 PetriNetUnfolderBase]: For 239/239 co-relation queries the response was YES. [2024-06-27 17:08:39,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2046 conditions, 1019 events. 507/1019 cut-off events. For 239/239 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 5990 event pairs, 156 based on Foata normal form. 16/986 useless extension candidates. Maximal degree in co-relation 2028. Up to 645 conditions per place. [2024-06-27 17:08:39,780 INFO L140 encePairwiseOnDemand]: 49/52 looper letters, 28 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2024-06-27 17:08:39,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 54 transitions, 198 flow [2024-06-27 17:08:39,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 17:08:39,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 17:08:39,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2024-06-27 17:08:39,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7371794871794872 [2024-06-27 17:08:39,782 INFO L175 Difference]: Start difference. First operand has 57 places, 47 transitions, 118 flow. Second operand 3 states and 115 transitions. [2024-06-27 17:08:39,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 54 transitions, 198 flow [2024-06-27 17:08:39,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 54 transitions, 194 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 17:08:39,784 INFO L231 Difference]: Finished difference. Result has 58 places, 47 transitions, 122 flow [2024-06-27 17:08:39,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=58, PETRI_TRANSITIONS=47} [2024-06-27 17:08:39,785 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -2 predicate places. [2024-06-27 17:08:39,785 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 47 transitions, 122 flow [2024-06-27 17:08:39,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:08:39,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:08:39,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:08:39,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 17:08:39,787 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-06-27 17:08:39,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:08:39,787 INFO L85 PathProgramCache]: Analyzing trace with hash 161657270, now seen corresponding path program 5 times [2024-06-27 17:08:39,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:08:39,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702928902] [2024-06-27 17:08:39,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:08:39,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:08:39,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:08:41,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:41,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:08:41,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702928902] [2024-06-27 17:08:41,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702928902] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:08:41,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:08:41,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-06-27 17:08:41,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603410185] [2024-06-27 17:08:41,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:08:41,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 17:08:41,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:08:41,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 17:08:41,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-06-27 17:08:41,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-27 17:08:41,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 47 transitions, 122 flow. Second operand has 14 states, 14 states have (on average 15.714285714285714) internal successors, (220), 14 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:08:41,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:08:41,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-27 17:08:41,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:08:44,734 INFO L124 PetriNetUnfolderBase]: 13819/19920 cut-off events. [2024-06-27 17:08:44,734 INFO L125 PetriNetUnfolderBase]: For 3305/3305 co-relation queries the response was YES. [2024-06-27 17:08:44,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43095 conditions, 19920 events. 13819/19920 cut-off events. For 3305/3305 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 116001 event pairs, 1845 based on Foata normal form. 1/19900 useless extension candidates. Maximal degree in co-relation 12347. Up to 4778 conditions per place. [2024-06-27 17:08:44,936 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 217 selfloop transitions, 13 changer transitions 19/258 dead transitions. [2024-06-27 17:08:44,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 258 transitions, 1129 flow [2024-06-27 17:08:44,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 17:08:44,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 17:08:44,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 432 transitions. [2024-06-27 17:08:44,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5934065934065934 [2024-06-27 17:08:44,941 INFO L175 Difference]: Start difference. First operand has 58 places, 47 transitions, 122 flow. Second operand 14 states and 432 transitions. [2024-06-27 17:08:44,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 258 transitions, 1129 flow [2024-06-27 17:08:44,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 258 transitions, 1125 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 17:08:44,951 INFO L231 Difference]: Finished difference. Result has 81 places, 59 transitions, 223 flow [2024-06-27 17:08:44,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=223, PETRI_PLACES=81, PETRI_TRANSITIONS=59} [2024-06-27 17:08:44,953 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 21 predicate places. [2024-06-27 17:08:44,953 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 59 transitions, 223 flow [2024-06-27 17:08:44,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.714285714285714) internal successors, (220), 14 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:08:44,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:08:44,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:08:44,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 17:08:44,958 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-06-27 17:08:44,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:08:44,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1223085626, now seen corresponding path program 6 times [2024-06-27 17:08:44,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:08:44,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609242237] [2024-06-27 17:08:44,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:08:44,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:08:45,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:08:46,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:46,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:08:46,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609242237] [2024-06-27 17:08:46,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609242237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:08:46,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:08:46,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-06-27 17:08:46,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345104080] [2024-06-27 17:08:46,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:08:46,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 17:08:46,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:08:46,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 17:08:46,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-06-27 17:08:46,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-27 17:08:46,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 59 transitions, 223 flow. Second operand has 14 states, 14 states have (on average 15.714285714285714) internal successors, (220), 14 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:08:46,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:08:46,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-27 17:08:46,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:08:52,527 INFO L124 PetriNetUnfolderBase]: 37970/55199 cut-off events. [2024-06-27 17:08:52,527 INFO L125 PetriNetUnfolderBase]: For 44563/44563 co-relation queries the response was YES. [2024-06-27 17:08:52,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150640 conditions, 55199 events. 37970/55199 cut-off events. For 44563/44563 co-relation queries the response was YES. Maximal size of possible extension queue 1481. Compared 371807 event pairs, 4605 based on Foata normal form. 1/55181 useless extension candidates. Maximal degree in co-relation 150461. Up to 15677 conditions per place. [2024-06-27 17:08:53,101 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 274 selfloop transitions, 25 changer transitions 10/318 dead transitions. [2024-06-27 17:08:53,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 318 transitions, 1826 flow [2024-06-27 17:08:53,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 17:08:53,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 17:08:53,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 434 transitions. [2024-06-27 17:08:53,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5961538461538461 [2024-06-27 17:08:53,104 INFO L175 Difference]: Start difference. First operand has 81 places, 59 transitions, 223 flow. Second operand 14 states and 434 transitions. [2024-06-27 17:08:53,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 318 transitions, 1826 flow [2024-06-27 17:08:54,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 318 transitions, 1784 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-27 17:08:54,024 INFO L231 Difference]: Finished difference. Result has 101 places, 81 transitions, 474 flow [2024-06-27 17:08:54,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=474, PETRI_PLACES=101, PETRI_TRANSITIONS=81} [2024-06-27 17:08:54,028 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 41 predicate places. [2024-06-27 17:08:54,029 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 81 transitions, 474 flow [2024-06-27 17:08:54,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.714285714285714) internal successors, (220), 14 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:08:54,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:08:54,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:08:54,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 17:08:54,030 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-06-27 17:08:54,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:08:54,031 INFO L85 PathProgramCache]: Analyzing trace with hash 610348320, now seen corresponding path program 7 times [2024-06-27 17:08:54,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:08:54,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67085540] [2024-06-27 17:08:54,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:08:54,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:08:54,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:08:55,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:55,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:08:55,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67085540] [2024-06-27 17:08:55,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67085540] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:08:55,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:08:55,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-06-27 17:08:55,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70148766] [2024-06-27 17:08:55,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:08:55,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 17:08:55,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:08:55,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 17:08:55,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-06-27 17:08:55,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-27 17:08:55,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 81 transitions, 474 flow. Second operand has 14 states, 14 states have (on average 15.714285714285714) internal successors, (220), 14 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:08:55,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:08:55,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-27 17:08:55,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:09:04,951 INFO L124 PetriNetUnfolderBase]: 62785/91729 cut-off events. [2024-06-27 17:09:04,952 INFO L125 PetriNetUnfolderBase]: For 160282/160282 co-relation queries the response was YES. [2024-06-27 17:09:05,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 284168 conditions, 91729 events. 62785/91729 cut-off events. For 160282/160282 co-relation queries the response was YES. Maximal size of possible extension queue 2610. Compared 668498 event pairs, 11681 based on Foata normal form. 1/91695 useless extension candidates. Maximal degree in co-relation 283747. Up to 20868 conditions per place. [2024-06-27 17:09:05,824 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 288 selfloop transitions, 44 changer transitions 11/352 dead transitions. [2024-06-27 17:09:05,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 352 transitions, 2495 flow [2024-06-27 17:09:05,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 17:09:05,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 17:09:05,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 428 transitions. [2024-06-27 17:09:05,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5879120879120879 [2024-06-27 17:09:05,830 INFO L175 Difference]: Start difference. First operand has 101 places, 81 transitions, 474 flow. Second operand 14 states and 428 transitions. [2024-06-27 17:09:05,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 352 transitions, 2495 flow [2024-06-27 17:09:07,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 352 transitions, 2455 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-06-27 17:09:07,235 INFO L231 Difference]: Finished difference. Result has 123 places, 112 transitions, 957 flow [2024-06-27 17:09:07,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=957, PETRI_PLACES=123, PETRI_TRANSITIONS=112} [2024-06-27 17:09:07,236 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 63 predicate places. [2024-06-27 17:09:07,236 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 112 transitions, 957 flow [2024-06-27 17:09:07,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.714285714285714) internal successors, (220), 14 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:09:07,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:09:07,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:09:07,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 17:09:07,237 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-06-27 17:09:07,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:09:07,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1973642582, now seen corresponding path program 8 times [2024-06-27 17:09:07,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:09:07,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887418408] [2024-06-27 17:09:07,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:09:07,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:09:07,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:09:08,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:09:08,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:09:08,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887418408] [2024-06-27 17:09:08,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887418408] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:09:08,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:09:08,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-06-27 17:09:08,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335491959] [2024-06-27 17:09:08,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:09:08,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 17:09:08,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:09:08,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 17:09:08,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-06-27 17:09:08,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-27 17:09:08,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 112 transitions, 957 flow. Second operand has 14 states, 14 states have (on average 15.714285714285714) internal successors, (220), 14 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:09:08,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:09:08,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-27 17:09:08,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:09:30,515 INFO L124 PetriNetUnfolderBase]: 132857/195105 cut-off events. [2024-06-27 17:09:30,515 INFO L125 PetriNetUnfolderBase]: For 713477/713477 co-relation queries the response was YES. [2024-06-27 17:09:32,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 693616 conditions, 195105 events. 132857/195105 cut-off events. For 713477/713477 co-relation queries the response was YES. Maximal size of possible extension queue 6792. Compared 1613741 event pairs, 25938 based on Foata normal form. 1/195087 useless extension candidates. Maximal degree in co-relation 692556. Up to 61893 conditions per place. [2024-06-27 17:09:32,640 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 364 selfloop transitions, 49 changer transitions 10/432 dead transitions. [2024-06-27 17:09:32,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 432 transitions, 4150 flow [2024-06-27 17:09:32,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 17:09:32,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 17:09:32,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 430 transitions. [2024-06-27 17:09:32,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5906593406593407 [2024-06-27 17:09:32,644 INFO L175 Difference]: Start difference. First operand has 123 places, 112 transitions, 957 flow. Second operand 14 states and 430 transitions. [2024-06-27 17:09:32,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 432 transitions, 4150 flow