./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-match-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a340643f 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/chl-match-trans.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 58a3707e98508adde0e15b9d8e43fa1e77573e5478a67cbc9ef6d2cbcb9307e7 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 15:23:16,750 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 15:23:16,826 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 15:23:16,830 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 15:23:16,831 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 15:23:16,859 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 15:23:16,860 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 15:23:16,860 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 15:23:16,861 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 15:23:16,865 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 15:23:16,865 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 15:23:16,866 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 15:23:16,867 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 15:23:16,868 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 15:23:16,868 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 15:23:16,869 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 15:23:16,869 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 15:23:16,869 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 15:23:16,869 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 15:23:16,870 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 15:23:16,870 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 15:23:16,870 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 15:23:16,871 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 15:23:16,871 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 15:23:16,871 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 15:23:16,871 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 15:23:16,872 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 15:23:16,872 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 15:23:16,873 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 15:23:16,873 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 15:23:16,874 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 15:23:16,874 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 15:23:16,874 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:23:16,875 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 15:23:16,875 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 15:23:16,875 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 15:23:16,875 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 15:23:16,876 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 15:23:16,876 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 15:23:16,876 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 15:23:16,876 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 15:23:16,877 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 15:23:16,877 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 15:23:16,877 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 58a3707e98508adde0e15b9d8e43fa1e77573e5478a67cbc9ef6d2cbcb9307e7 [2024-01-27 15:23:17,163 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 15:23:17,180 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 15:23:17,182 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 15:23:17,183 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 15:23:17,183 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 15:23:17,184 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-match-trans.wvr.c [2024-01-27 15:23:18,256 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 15:23:18,426 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 15:23:18,426 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-match-trans.wvr.c [2024-01-27 15:23:18,433 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eaa4abf83/33a023c066674fe2a548735791343b33/FLAGa7c1aaf5d [2024-01-27 15:23:18,444 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eaa4abf83/33a023c066674fe2a548735791343b33 [2024-01-27 15:23:18,446 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 15:23:18,447 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 15:23:18,448 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 15:23:18,448 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 15:23:18,455 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 15:23:18,456 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:23:18" (1/1) ... [2024-01-27 15:23:18,457 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@467d7c0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:23:18, skipping insertion in model container [2024-01-27 15:23:18,457 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:23:18" (1/1) ... [2024-01-27 15:23:18,475 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 15:23:18,625 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-match-trans.wvr.c[2993,3006] [2024-01-27 15:23:18,633 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:23:18,646 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 15:23:18,666 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-match-trans.wvr.c[2993,3006] [2024-01-27 15:23:18,669 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:23:18,686 INFO L206 MainTranslator]: Completed translation [2024-01-27 15:23:18,687 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:23:18 WrapperNode [2024-01-27 15:23:18,687 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 15:23:18,689 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 15:23:18,689 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 15:23:18,689 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 15:23:18,695 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:23:18" (1/1) ... [2024-01-27 15:23:18,722 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:23:18" (1/1) ... [2024-01-27 15:23:18,754 INFO L138 Inliner]: procedures = 23, calls = 33, calls flagged for inlining = 11, calls inlined = 21, statements flattened = 213 [2024-01-27 15:23:18,755 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 15:23:18,756 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 15:23:18,756 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 15:23:18,756 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 15:23:18,767 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:23:18" (1/1) ... [2024-01-27 15:23:18,767 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:23:18" (1/1) ... [2024-01-27 15:23:18,770 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:23:18" (1/1) ... [2024-01-27 15:23:18,788 INFO L175 MemorySlicer]: Split 8 memory accesses to 4 slices as follows [2, 2, 2, 2]. 25 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2024-01-27 15:23:18,788 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:23:18" (1/1) ... [2024-01-27 15:23:18,788 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:23:18" (1/1) ... [2024-01-27 15:23:18,795 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:23:18" (1/1) ... [2024-01-27 15:23:18,797 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:23:18" (1/1) ... [2024-01-27 15:23:18,798 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:23:18" (1/1) ... [2024-01-27 15:23:18,800 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:23:18" (1/1) ... [2024-01-27 15:23:18,803 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 15:23:18,804 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 15:23:18,804 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 15:23:18,805 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 15:23:18,805 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:23:18" (1/1) ... [2024-01-27 15:23:18,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:23:18,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:23:18,849 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) [2024-01-27 15:23:18,865 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 [2024-01-27 15:23:18,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 15:23:18,904 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-27 15:23:18,904 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-27 15:23:18,904 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-27 15:23:18,905 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-27 15:23:18,905 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-27 15:23:18,905 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-27 15:23:18,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 15:23:18,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 15:23:18,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 15:23:18,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-27 15:23:18,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 15:23:18,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 15:23:18,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 15:23:18,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 15:23:18,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-27 15:23:18,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 15:23:18,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 15:23:18,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-27 15:23:18,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-27 15:23:18,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-27 15:23:18,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-27 15:23:18,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 15:23:18,909 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-27 15:23:19,018 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 15:23:19,020 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 15:23:19,367 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 15:23:19,367 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 15:23:19,724 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 15:23:19,724 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-27 15:23:19,725 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:23:19 BoogieIcfgContainer [2024-01-27 15:23:19,725 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 15:23:19,729 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 15:23:19,729 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 15:23:19,732 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 15:23:19,732 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 03:23:18" (1/3) ... [2024-01-27 15:23:19,733 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51cf16cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:23:19, skipping insertion in model container [2024-01-27 15:23:19,734 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:23:18" (2/3) ... [2024-01-27 15:23:19,735 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51cf16cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:23:19, skipping insertion in model container [2024-01-27 15:23:19,735 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:23:19" (3/3) ... [2024-01-27 15:23:19,736 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-match-trans.wvr.c [2024-01-27 15:23:19,744 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 15:23:19,753 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 15:23:19,754 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-27 15:23:19,754 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 15:23:19,812 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-01-27 15:23:19,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 31 places, 21 transitions, 63 flow [2024-01-27 15:23:19,880 INFO L124 PetriNetUnfolderBase]: 0/18 cut-off events. [2024-01-27 15:23:19,881 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-27 15:23:19,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 18 events. 0/18 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-01-27 15:23:19,882 INFO L82 GeneralOperation]: Start removeDead. Operand has 31 places, 21 transitions, 63 flow [2024-01-27 15:23:19,907 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 27 places, 17 transitions, 52 flow [2024-01-27 15:23:19,915 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 15:23:19,923 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;@327ad9c6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 15:23:19,924 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-01-27 15:23:19,964 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 15:23:19,964 INFO L124 PetriNetUnfolderBase]: 0/16 cut-off events. [2024-01-27 15:23:19,964 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-27 15:23:19,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:23:19,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:23:19,966 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 1 more)] === [2024-01-27 15:23:19,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:23:19,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1762518981, now seen corresponding path program 1 times [2024-01-27 15:23:19,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:23:19,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45972713] [2024-01-27 15:23:19,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:23:19,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:23:20,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:23:20,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:23:20,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:23:20,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45972713] [2024-01-27 15:23:20,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45972713] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:23:20,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:23:20,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:23:20,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565764962] [2024-01-27 15:23:20,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:23:20,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:23:20,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:23:20,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:23:20,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:23:20,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 21 [2024-01-27 15:23:20,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 52 flow. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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) [2024-01-27 15:23:20,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:23:20,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 21 [2024-01-27 15:23:20,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:23:21,222 INFO L124 PetriNetUnfolderBase]: 38/102 cut-off events. [2024-01-27 15:23:21,222 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-01-27 15:23:21,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235 conditions, 102 events. 38/102 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 287 event pairs, 3 based on Foata normal form. 1/103 useless extension candidates. Maximal degree in co-relation 169. Up to 32 conditions per place. [2024-01-27 15:23:21,226 INFO L140 encePairwiseOnDemand]: 16/21 looper letters, 32 selfloop transitions, 5 changer transitions 7/45 dead transitions. [2024-01-27 15:23:21,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 45 transitions, 226 flow [2024-01-27 15:23:21,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 15:23:21,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 15:23:21,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 69 transitions. [2024-01-27 15:23:21,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5476190476190477 [2024-01-27 15:23:21,240 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 52 flow. Second operand 6 states and 69 transitions. [2024-01-27 15:23:21,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 45 transitions, 226 flow [2024-01-27 15:23:21,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 45 transitions, 194 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-27 15:23:21,245 INFO L231 Difference]: Finished difference. Result has 28 places, 19 transitions, 59 flow [2024-01-27 15:23:21,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=59, PETRI_PLACES=28, PETRI_TRANSITIONS=19} [2024-01-27 15:23:21,250 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2024-01-27 15:23:21,251 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 19 transitions, 59 flow [2024-01-27 15:23:21,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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) [2024-01-27 15:23:21,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:23:21,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:23:21,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 15:23:21,252 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 1 more)] === [2024-01-27 15:23:21,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:23:21,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1977295003, now seen corresponding path program 2 times [2024-01-27 15:23:21,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:23:21,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174558081] [2024-01-27 15:23:21,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:23:21,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:23:21,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:23:21,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:23:21,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:23:21,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174558081] [2024-01-27 15:23:21,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174558081] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:23:21,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:23:21,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:23:21,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996982507] [2024-01-27 15:23:21,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:23:21,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:23:21,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:23:21,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:23:21,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:23:21,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 21 [2024-01-27 15:23:21,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 19 transitions, 59 flow. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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) [2024-01-27 15:23:21,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:23:21,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 21 [2024-01-27 15:23:21,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:23:21,832 INFO L124 PetriNetUnfolderBase]: 39/111 cut-off events. [2024-01-27 15:23:21,832 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-01-27 15:23:21,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286 conditions, 111 events. 39/111 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 355 event pairs, 3 based on Foata normal form. 1/112 useless extension candidates. Maximal degree in co-relation 273. Up to 42 conditions per place. [2024-01-27 15:23:21,836 INFO L140 encePairwiseOnDemand]: 16/21 looper letters, 33 selfloop transitions, 5 changer transitions 11/50 dead transitions. [2024-01-27 15:23:21,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 50 transitions, 245 flow [2024-01-27 15:23:21,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 15:23:21,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 15:23:21,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 71 transitions. [2024-01-27 15:23:21,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5634920634920635 [2024-01-27 15:23:21,841 INFO L175 Difference]: Start difference. First operand has 28 places, 19 transitions, 59 flow. Second operand 6 states and 71 transitions. [2024-01-27 15:23:21,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 50 transitions, 245 flow [2024-01-27 15:23:21,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 50 transitions, 241 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-01-27 15:23:21,843 INFO L231 Difference]: Finished difference. Result has 33 places, 20 transitions, 76 flow [2024-01-27 15:23:21,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=76, PETRI_PLACES=33, PETRI_TRANSITIONS=20} [2024-01-27 15:23:21,844 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2024-01-27 15:23:21,845 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 20 transitions, 76 flow [2024-01-27 15:23:21,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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) [2024-01-27 15:23:21,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:23:21,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:23:21,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 15:23:21,846 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 1 more)] === [2024-01-27 15:23:21,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:23:21,847 INFO L85 PathProgramCache]: Analyzing trace with hash -2128507313, now seen corresponding path program 3 times [2024-01-27 15:23:21,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:23:21,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652486323] [2024-01-27 15:23:21,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:23:21,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:23:21,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:23:22,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:23:22,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:23:22,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652486323] [2024-01-27 15:23:22,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652486323] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:23:22,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:23:22,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:23:22,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865383144] [2024-01-27 15:23:22,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:23:22,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:23:22,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:23:22,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:23:22,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:23:22,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 21 [2024-01-27 15:23:22,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 20 transitions, 76 flow. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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) [2024-01-27 15:23:22,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:23:22,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 21 [2024-01-27 15:23:22,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:23:22,384 INFO L124 PetriNetUnfolderBase]: 29/89 cut-off events. [2024-01-27 15:23:22,385 INFO L125 PetriNetUnfolderBase]: For 100/100 co-relation queries the response was YES. [2024-01-27 15:23:22,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 266 conditions, 89 events. 29/89 cut-off events. For 100/100 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 250 event pairs, 2 based on Foata normal form. 1/90 useless extension candidates. Maximal degree in co-relation 251. Up to 35 conditions per place. [2024-01-27 15:23:22,386 INFO L140 encePairwiseOnDemand]: 16/21 looper letters, 30 selfloop transitions, 6 changer transitions 7/44 dead transitions. [2024-01-27 15:23:22,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 44 transitions, 231 flow [2024-01-27 15:23:22,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 15:23:22,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 15:23:22,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 68 transitions. [2024-01-27 15:23:22,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5396825396825397 [2024-01-27 15:23:22,388 INFO L175 Difference]: Start difference. First operand has 33 places, 20 transitions, 76 flow. Second operand 6 states and 68 transitions. [2024-01-27 15:23:22,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 44 transitions, 231 flow [2024-01-27 15:23:22,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 44 transitions, 215 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-01-27 15:23:22,390 INFO L231 Difference]: Finished difference. Result has 37 places, 22 transitions, 99 flow [2024-01-27 15:23:22,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=99, PETRI_PLACES=37, PETRI_TRANSITIONS=22} [2024-01-27 15:23:22,391 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2024-01-27 15:23:22,391 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 22 transitions, 99 flow [2024-01-27 15:23:22,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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) [2024-01-27 15:23:22,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:23:22,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:23:22,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-27 15:23:22,392 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 1 more)] === [2024-01-27 15:23:22,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:23:22,393 INFO L85 PathProgramCache]: Analyzing trace with hash -79715959, now seen corresponding path program 4 times [2024-01-27 15:23:22,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:23:22,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193387130] [2024-01-27 15:23:22,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:23:22,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:23:22,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:23:22,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:23:22,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:23:22,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193387130] [2024-01-27 15:23:22,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193387130] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:23:22,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:23:22,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:23:22,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685566592] [2024-01-27 15:23:22,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:23:22,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:23:22,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:23:22,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:23:22,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:23:22,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 21 [2024-01-27 15:23:22,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 22 transitions, 99 flow. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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) [2024-01-27 15:23:22,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:23:22,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 21 [2024-01-27 15:23:22,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:23:22,884 INFO L124 PetriNetUnfolderBase]: 26/77 cut-off events. [2024-01-27 15:23:22,885 INFO L125 PetriNetUnfolderBase]: For 109/109 co-relation queries the response was YES. [2024-01-27 15:23:22,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 77 events. 26/77 cut-off events. For 109/109 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 197 event pairs, 2 based on Foata normal form. 1/78 useless extension candidates. Maximal degree in co-relation 248. Up to 29 conditions per place. [2024-01-27 15:23:22,886 INFO L140 encePairwiseOnDemand]: 16/21 looper letters, 18 selfloop transitions, 4 changer transitions 21/44 dead transitions. [2024-01-27 15:23:22,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 44 transitions, 243 flow [2024-01-27 15:23:22,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 15:23:22,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 15:23:22,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 68 transitions. [2024-01-27 15:23:22,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5396825396825397 [2024-01-27 15:23:22,888 INFO L175 Difference]: Start difference. First operand has 37 places, 22 transitions, 99 flow. Second operand 6 states and 68 transitions. [2024-01-27 15:23:22,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 44 transitions, 243 flow [2024-01-27 15:23:22,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 44 transitions, 241 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-01-27 15:23:22,890 INFO L231 Difference]: Finished difference. Result has 41 places, 19 transitions, 85 flow [2024-01-27 15:23:22,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=85, PETRI_PLACES=41, PETRI_TRANSITIONS=19} [2024-01-27 15:23:22,891 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 14 predicate places. [2024-01-27 15:23:22,891 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 19 transitions, 85 flow [2024-01-27 15:23:22,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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) [2024-01-27 15:23:22,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:23:22,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:23:22,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-27 15:23:22,892 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 1 more)] === [2024-01-27 15:23:22,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:23:22,892 INFO L85 PathProgramCache]: Analyzing trace with hash -603195379, now seen corresponding path program 5 times [2024-01-27 15:23:22,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:23:22,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801202732] [2024-01-27 15:23:22,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:23:22,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:23:22,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:23:23,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:23:23,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:23:23,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801202732] [2024-01-27 15:23:23,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801202732] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:23:23,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:23:23,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:23:23,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745404313] [2024-01-27 15:23:23,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:23:23,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:23:23,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:23:23,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:23:23,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:23:23,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 21 [2024-01-27 15:23:23,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 19 transitions, 85 flow. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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) [2024-01-27 15:23:23,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:23:23,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 21 [2024-01-27 15:23:23,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:23:23,292 INFO L124 PetriNetUnfolderBase]: 8/41 cut-off events. [2024-01-27 15:23:23,292 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-01-27 15:23:23,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 41 events. 8/41 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 59 event pairs, 0 based on Foata normal form. 1/42 useless extension candidates. Maximal degree in co-relation 138. Up to 19 conditions per place. [2024-01-27 15:23:23,293 INFO L140 encePairwiseOnDemand]: 16/21 looper letters, 15 selfloop transitions, 3 changer transitions 12/31 dead transitions. [2024-01-27 15:23:23,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 31 transitions, 181 flow [2024-01-27 15:23:23,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 15:23:23,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 15:23:23,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 55 transitions. [2024-01-27 15:23:23,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4365079365079365 [2024-01-27 15:23:23,295 INFO L175 Difference]: Start difference. First operand has 41 places, 19 transitions, 85 flow. Second operand 6 states and 55 transitions. [2024-01-27 15:23:23,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 31 transitions, 181 flow [2024-01-27 15:23:23,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 31 transitions, 147 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-01-27 15:23:23,301 INFO L231 Difference]: Finished difference. Result has 34 places, 17 transitions, 58 flow [2024-01-27 15:23:23,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=58, PETRI_PLACES=34, PETRI_TRANSITIONS=17} [2024-01-27 15:23:23,303 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2024-01-27 15:23:23,303 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 17 transitions, 58 flow [2024-01-27 15:23:23,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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) [2024-01-27 15:23:23,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:23:23,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:23:23,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-27 15:23:23,306 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 1 more)] === [2024-01-27 15:23:23,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:23:23,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1007745579, now seen corresponding path program 6 times [2024-01-27 15:23:23,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:23:23,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680388724] [2024-01-27 15:23:23,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:23:23,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:23:23,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:23:23,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:23:23,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:23:23,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680388724] [2024-01-27 15:23:23,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680388724] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:23:23,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:23:23,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:23:23,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354043974] [2024-01-27 15:23:23,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:23:23,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:23:23,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:23:23,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:23:23,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:23:23,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 21 [2024-01-27 15:23:23,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 17 transitions, 58 flow. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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) [2024-01-27 15:23:23,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:23:23,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 21 [2024-01-27 15:23:23,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:23:23,664 INFO L124 PetriNetUnfolderBase]: 3/21 cut-off events. [2024-01-27 15:23:23,665 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-01-27 15:23:23,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 21 events. 3/21 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 11 event pairs, 0 based on Foata normal form. 1/22 useless extension candidates. Maximal degree in co-relation 64. Up to 8 conditions per place. [2024-01-27 15:23:23,665 INFO L140 encePairwiseOnDemand]: 16/21 looper letters, 0 selfloop transitions, 0 changer transitions 18/18 dead transitions. [2024-01-27 15:23:23,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 18 transitions, 94 flow [2024-01-27 15:23:23,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 15:23:23,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 15:23:23,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 43 transitions. [2024-01-27 15:23:23,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3412698412698413 [2024-01-27 15:23:23,667 INFO L175 Difference]: Start difference. First operand has 34 places, 17 transitions, 58 flow. Second operand 6 states and 43 transitions. [2024-01-27 15:23:23,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 18 transitions, 94 flow [2024-01-27 15:23:23,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 18 transitions, 82 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-01-27 15:23:23,668 INFO L231 Difference]: Finished difference. Result has 30 places, 0 transitions, 0 flow [2024-01-27 15:23:23,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=30, PETRI_TRANSITIONS=0} [2024-01-27 15:23:23,670 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2024-01-27 15:23:23,671 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 0 transitions, 0 flow [2024-01-27 15:23:23,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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) [2024-01-27 15:23:23,673 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-01-27 15:23:23,674 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2024-01-27 15:23:23,674 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-01-27 15:23:23,674 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-01-27 15:23:23,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-27 15:23:23,674 INFO L445 BasicCegarLoop]: Path program histogram: [6] [2024-01-27 15:23:23,678 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-27 15:23:23,678 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-27 15:23:23,686 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 03:23:23 BasicIcfg [2024-01-27 15:23:23,686 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-27 15:23:23,687 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-01-27 15:23:23,687 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-01-27 15:23:23,687 INFO L274 PluginConnector]: Witness Printer initialized [2024-01-27 15:23:23,687 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:23:19" (3/4) ... [2024-01-27 15:23:23,689 INFO L137 WitnessPrinter]: Generating witness for correct program [2024-01-27 15:23:23,692 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-01-27 15:23:23,692 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-01-27 15:23:23,692 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2024-01-27 15:23:23,698 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 90 nodes and edges [2024-01-27 15:23:23,698 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2024-01-27 15:23:23,698 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-01-27 15:23:23,698 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-01-27 15:23:23,792 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-01-27 15:23:23,793 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-01-27 15:23:23,793 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-01-27 15:23:23,793 INFO L158 Benchmark]: Toolchain (without parser) took 5346.50ms. Allocated memory was 161.5MB in the beginning and 262.1MB in the end (delta: 100.7MB). Free memory was 124.0MB in the beginning and 100.9MB in the end (delta: 23.1MB). Peak memory consumption was 123.7MB. Max. memory is 16.1GB. [2024-01-27 15:23:23,794 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 100.7MB. Free memory is still 70.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-27 15:23:23,794 INFO L158 Benchmark]: CACSL2BoogieTranslator took 240.01ms. Allocated memory is still 161.5MB. Free memory was 124.0MB in the beginning and 111.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-01-27 15:23:23,794 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.41ms. Allocated memory is still 161.5MB. Free memory was 111.4MB in the beginning and 109.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-27 15:23:23,794 INFO L158 Benchmark]: Boogie Preprocessor took 48.03ms. Allocated memory is still 161.5MB. Free memory was 109.3MB in the beginning and 106.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-01-27 15:23:23,795 INFO L158 Benchmark]: RCFGBuilder took 920.88ms. Allocated memory is still 161.5MB. Free memory was 106.2MB in the beginning and 52.9MB in the end (delta: 53.3MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. [2024-01-27 15:23:23,795 INFO L158 Benchmark]: TraceAbstraction took 3957.74ms. Allocated memory was 161.5MB in the beginning and 262.1MB in the end (delta: 100.7MB). Free memory was 52.9MB in the beginning and 105.1MB in the end (delta: -52.3MB). Peak memory consumption was 49.5MB. Max. memory is 16.1GB. [2024-01-27 15:23:23,795 INFO L158 Benchmark]: Witness Printer took 106.14ms. Allocated memory is still 262.1MB. Free memory was 105.1MB in the beginning and 100.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-01-27 15:23:23,797 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 100.7MB. Free memory is still 70.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 240.01ms. Allocated memory is still 161.5MB. Free memory was 124.0MB in the beginning and 111.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.41ms. Allocated memory is still 161.5MB. Free memory was 111.4MB in the beginning and 109.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.03ms. Allocated memory is still 161.5MB. Free memory was 109.3MB in the beginning and 106.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 920.88ms. Allocated memory is still 161.5MB. Free memory was 106.2MB in the beginning and 52.9MB in the end (delta: 53.3MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. * TraceAbstraction took 3957.74ms. Allocated memory was 161.5MB in the beginning and 262.1MB in the end (delta: 100.7MB). Free memory was 52.9MB in the beginning and 105.1MB in the end (delta: -52.3MB). Peak memory consumption was 49.5MB. Max. memory is 16.1GB. * Witness Printer took 106.14ms. Allocated memory is still 262.1MB. Free memory was 105.1MB in the beginning and 100.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 88]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 31 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.8s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 179 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 179 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 464 IncrementalHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 0 mSDtfsCounter, 464 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=99occurred in iteration=3, InterpolantAutomatonStates: 36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 102 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 884 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-01-27 15:23:23,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE