./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-word-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-word-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 9cb2b0cbecf02e8cce2fd890595fb88c3204482a27ce7ac6f4ef6fb92949d747 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 15:29:09,607 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 15:29:09,701 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 15:29:09,706 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 15:29:09,707 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 15:29:09,735 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 15:29:09,735 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 15:29:09,735 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 15:29:09,736 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 15:29:09,740 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 15:29:09,740 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 15:29:09,740 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 15:29:09,741 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 15:29:09,742 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 15:29:09,743 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 15:29:09,743 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 15:29:09,743 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 15:29:09,743 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 15:29:09,743 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 15:29:09,744 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 15:29:09,744 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 15:29:09,744 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 15:29:09,744 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 15:29:09,745 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 15:29:09,745 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 15:29:09,745 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 15:29:09,745 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 15:29:09,745 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 15:29:09,746 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 15:29:09,746 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 15:29:09,747 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 15:29:09,747 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 15:29:09,747 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:29:09,748 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 15:29:09,748 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 15:29:09,748 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 15:29:09,748 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 15:29:09,748 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 15:29:09,749 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 15:29:09,749 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 15:29:09,749 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 15:29:09,749 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 15:29:09,749 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 15:29:09,749 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9cb2b0cbecf02e8cce2fd890595fb88c3204482a27ce7ac6f4ef6fb92949d747 [2024-01-27 15:29:10,024 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 15:29:10,049 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 15:29:10,051 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 15:29:10,052 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 15:29:10,052 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 15:29:10,053 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-word-trans.wvr.c [2024-01-27 15:29:11,225 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 15:29:11,431 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 15:29:11,431 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-trans.wvr.c [2024-01-27 15:29:11,438 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3e07d392/d3e398c62594488ca8c3a1c4f49e1d37/FLAG47fe0c498 [2024-01-27 15:29:11,449 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3e07d392/d3e398c62594488ca8c3a1c4f49e1d37 [2024-01-27 15:29:11,451 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 15:29:11,452 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 15:29:11,453 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 15:29:11,453 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 15:29:11,463 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 15:29:11,464 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:29:11" (1/1) ... [2024-01-27 15:29:11,465 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40e2c4c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:11, skipping insertion in model container [2024-01-27 15:29:11,465 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:29:11" (1/1) ... [2024-01-27 15:29:11,495 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 15:29:11,662 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-word-trans.wvr.c[3331,3344] [2024-01-27 15:29:11,670 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:29:11,682 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 15:29:11,705 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-word-trans.wvr.c[3331,3344] [2024-01-27 15:29:11,709 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:29:11,722 INFO L206 MainTranslator]: Completed translation [2024-01-27 15:29:11,723 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:11 WrapperNode [2024-01-27 15:29:11,723 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 15:29:11,724 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 15:29:11,724 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 15:29:11,725 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 15:29:11,732 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:11" (1/1) ... [2024-01-27 15:29:11,746 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:11" (1/1) ... [2024-01-27 15:29:11,770 INFO L138 Inliner]: procedures = 25, calls = 44, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 183 [2024-01-27 15:29:11,770 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 15:29:11,771 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 15:29:11,771 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 15:29:11,771 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 15:29:11,781 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:11" (1/1) ... [2024-01-27 15:29:11,782 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:11" (1/1) ... [2024-01-27 15:29:11,786 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:11" (1/1) ... [2024-01-27 15:29:11,803 INFO L175 MemorySlicer]: Split 23 memory accesses to 5 slices as follows [2, 2, 2, 15, 2]. 65 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 6 writes are split as follows [0, 1, 1, 3, 1]. [2024-01-27 15:29:11,816 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:11" (1/1) ... [2024-01-27 15:29:11,816 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:11" (1/1) ... [2024-01-27 15:29:11,825 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:11" (1/1) ... [2024-01-27 15:29:11,837 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:11" (1/1) ... [2024-01-27 15:29:11,839 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:11" (1/1) ... [2024-01-27 15:29:11,841 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:11" (1/1) ... [2024-01-27 15:29:11,844 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 15:29:11,845 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 15:29:11,845 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 15:29:11,845 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 15:29:11,846 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:11" (1/1) ... [2024-01-27 15:29:11,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:29:11,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:29:11,873 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 15:29:11,874 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 15:29:11,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 15:29:11,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 15:29:11,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 15:29:11,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 15:29:11,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 15:29:11,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-27 15:29:11,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-27 15:29:11,913 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-27 15:29:11,913 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-27 15:29:11,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-27 15:29:11,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-27 15:29:11,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-27 15:29:11,914 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-27 15:29:11,914 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-27 15:29:11,914 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-27 15:29:11,914 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-27 15:29:11,914 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-27 15:29:11,915 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-27 15:29:11,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 15:29:11,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 15:29:11,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 15:29:11,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-27 15:29:11,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-27 15:29:11,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-01-27 15:29:11,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 15:29:11,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 15:29:11,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 15:29:11,941 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 15:29:12,048 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 15:29:12,050 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 15:29:12,424 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 15:29:12,424 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 15:29:12,769 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 15:29:12,770 INFO L320 CfgBuilder]: Removed 6 assume(true) statements. [2024-01-27 15:29:12,770 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:29:12 BoogieIcfgContainer [2024-01-27 15:29:12,770 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 15:29:12,773 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 15:29:12,773 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 15:29:12,776 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 15:29:12,776 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 03:29:11" (1/3) ... [2024-01-27 15:29:12,777 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@776b1646 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:29:12, skipping insertion in model container [2024-01-27 15:29:12,777 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:11" (2/3) ... [2024-01-27 15:29:12,778 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@776b1646 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:29:12, skipping insertion in model container [2024-01-27 15:29:12,778 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:29:12" (3/3) ... [2024-01-27 15:29:12,783 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-trans.wvr.c [2024-01-27 15:29:12,792 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 15:29:12,801 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 15:29:12,801 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-27 15:29:12,802 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 15:29:12,858 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-01-27 15:29:12,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 51 transitions, 123 flow [2024-01-27 15:29:12,970 INFO L124 PetriNetUnfolderBase]: 12/48 cut-off events. [2024-01-27 15:29:12,971 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-27 15:29:12,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 48 events. 12/48 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 74 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2024-01-27 15:29:12,975 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 51 transitions, 123 flow [2024-01-27 15:29:12,978 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 47 transitions, 112 flow [2024-01-27 15:29:12,994 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 15:29:13,003 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;@39bca42b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 15:29:13,004 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-01-27 15:29:13,019 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 15:29:13,020 INFO L124 PetriNetUnfolderBase]: 12/46 cut-off events. [2024-01-27 15:29:13,020 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-27 15:29:13,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:13,021 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] [2024-01-27 15:29:13,021 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 15:29:13,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:13,026 INFO L85 PathProgramCache]: Analyzing trace with hash 156581823, now seen corresponding path program 1 times [2024-01-27 15:29:13,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:13,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605299724] [2024-01-27 15:29:13,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:13,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:13,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:13,675 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 15:29:13,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:13,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605299724] [2024-01-27 15:29:13,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605299724] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:13,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:13,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:29:13,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048167563] [2024-01-27 15:29:13,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:13,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:29:13,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:13,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:29:13,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:29:13,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 51 [2024-01-27 15:29:13,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 47 transitions, 112 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:13,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:13,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 51 [2024-01-27 15:29:13,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:14,649 INFO L124 PetriNetUnfolderBase]: 4644/6290 cut-off events. [2024-01-27 15:29:14,649 INFO L125 PetriNetUnfolderBase]: For 397/397 co-relation queries the response was YES. [2024-01-27 15:29:14,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12850 conditions, 6290 events. 4644/6290 cut-off events. For 397/397 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 26817 event pairs, 1292 based on Foata normal form. 1/4654 useless extension candidates. Maximal degree in co-relation 11342. Up to 2790 conditions per place. [2024-01-27 15:29:14,689 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 101 selfloop transitions, 13 changer transitions 1/116 dead transitions. [2024-01-27 15:29:14,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 116 transitions, 507 flow [2024-01-27 15:29:14,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:29:14,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:29:14,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 136 transitions. [2024-01-27 15:29:14,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-01-27 15:29:14,706 INFO L175 Difference]: Start difference. First operand has 45 places, 47 transitions, 112 flow. Second operand 5 states and 136 transitions. [2024-01-27 15:29:14,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 116 transitions, 507 flow [2024-01-27 15:29:14,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 116 transitions, 477 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-27 15:29:14,723 INFO L231 Difference]: Finished difference. Result has 46 places, 57 transitions, 178 flow [2024-01-27 15:29:14,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=178, PETRI_PLACES=46, PETRI_TRANSITIONS=57} [2024-01-27 15:29:14,728 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 1 predicate places. [2024-01-27 15:29:14,728 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 57 transitions, 178 flow [2024-01-27 15:29:14,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:14,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:14,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:14,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 15:29:14,729 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 15:29:14,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:14,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1349175001, now seen corresponding path program 2 times [2024-01-27 15:29:14,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:14,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910839074] [2024-01-27 15:29:14,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:14,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:14,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:15,007 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 15:29:15,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:15,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910839074] [2024-01-27 15:29:15,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910839074] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:15,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:15,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:29:15,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053573736] [2024-01-27 15:29:15,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:15,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:29:15,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:15,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:29:15,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:29:15,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 51 [2024-01-27 15:29:15,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 57 transitions, 178 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:15,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:15,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 51 [2024-01-27 15:29:15,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:15,818 INFO L124 PetriNetUnfolderBase]: 6056/8405 cut-off events. [2024-01-27 15:29:15,818 INFO L125 PetriNetUnfolderBase]: For 1831/1831 co-relation queries the response was YES. [2024-01-27 15:29:15,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19935 conditions, 8405 events. 6056/8405 cut-off events. For 1831/1831 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 40170 event pairs, 2727 based on Foata normal form. 1/7091 useless extension candidates. Maximal degree in co-relation 16739. Up to 4843 conditions per place. [2024-01-27 15:29:15,919 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 114 selfloop transitions, 7 changer transitions 3/125 dead transitions. [2024-01-27 15:29:15,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 125 transitions, 626 flow [2024-01-27 15:29:15,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:29:15,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:29:15,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2024-01-27 15:29:15,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5137254901960784 [2024-01-27 15:29:15,921 INFO L175 Difference]: Start difference. First operand has 46 places, 57 transitions, 178 flow. Second operand 5 states and 131 transitions. [2024-01-27 15:29:15,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 125 transitions, 626 flow [2024-01-27 15:29:15,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 125 transitions, 626 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-27 15:29:15,934 INFO L231 Difference]: Finished difference. Result has 53 places, 61 transitions, 235 flow [2024-01-27 15:29:15,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=235, PETRI_PLACES=53, PETRI_TRANSITIONS=61} [2024-01-27 15:29:15,935 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 8 predicate places. [2024-01-27 15:29:15,936 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 61 transitions, 235 flow [2024-01-27 15:29:15,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:15,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:15,936 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] [2024-01-27 15:29:15,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 15:29:15,937 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 15:29:15,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:15,937 INFO L85 PathProgramCache]: Analyzing trace with hash 2073642059, now seen corresponding path program 3 times [2024-01-27 15:29:15,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:15,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469179636] [2024-01-27 15:29:15,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:15,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:15,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:16,126 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 15:29:16,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:16,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469179636] [2024-01-27 15:29:16,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469179636] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:16,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:16,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:29:16,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296554036] [2024-01-27 15:29:16,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:16,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:29:16,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:16,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:29:16,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:29:16,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 51 [2024-01-27 15:29:16,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 61 transitions, 235 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:16,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:16,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 51 [2024-01-27 15:29:16,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:17,158 INFO L124 PetriNetUnfolderBase]: 7156/10075 cut-off events. [2024-01-27 15:29:17,158 INFO L125 PetriNetUnfolderBase]: For 5721/5721 co-relation queries the response was YES. [2024-01-27 15:29:17,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25248 conditions, 10075 events. 7156/10075 cut-off events. For 5721/5721 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 51048 event pairs, 3919 based on Foata normal form. 1/8845 useless extension candidates. Maximal degree in co-relation 17789. Up to 7387 conditions per place. [2024-01-27 15:29:17,218 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 116 selfloop transitions, 8 changer transitions 3/128 dead transitions. [2024-01-27 15:29:17,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 128 transitions, 710 flow [2024-01-27 15:29:17,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:29:17,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:29:17,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2024-01-27 15:29:17,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5058823529411764 [2024-01-27 15:29:17,220 INFO L175 Difference]: Start difference. First operand has 53 places, 61 transitions, 235 flow. Second operand 5 states and 129 transitions. [2024-01-27 15:29:17,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 128 transitions, 710 flow [2024-01-27 15:29:17,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 128 transitions, 700 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-01-27 15:29:17,262 INFO L231 Difference]: Finished difference. Result has 59 places, 66 transitions, 309 flow [2024-01-27 15:29:17,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=309, PETRI_PLACES=59, PETRI_TRANSITIONS=66} [2024-01-27 15:29:17,263 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 14 predicate places. [2024-01-27 15:29:17,263 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 66 transitions, 309 flow [2024-01-27 15:29:17,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:17,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:17,264 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] [2024-01-27 15:29:17,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-27 15:29:17,264 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 15:29:17,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:17,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1616001425, now seen corresponding path program 4 times [2024-01-27 15:29:17,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:17,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133146381] [2024-01-27 15:29:17,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:17,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:17,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:17,556 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 15:29:17,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:17,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133146381] [2024-01-27 15:29:17,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133146381] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:17,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:17,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:29:17,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127517721] [2024-01-27 15:29:17,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:17,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:29:17,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:17,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:29:17,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:29:17,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 51 [2024-01-27 15:29:17,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 66 transitions, 309 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:17,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:17,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 51 [2024-01-27 15:29:17,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:18,633 INFO L124 PetriNetUnfolderBase]: 7374/10352 cut-off events. [2024-01-27 15:29:18,634 INFO L125 PetriNetUnfolderBase]: For 9584/9584 co-relation queries the response was YES. [2024-01-27 15:29:18,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27372 conditions, 10352 events. 7374/10352 cut-off events. For 9584/9584 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 52224 event pairs, 3439 based on Foata normal form. 1/9088 useless extension candidates. Maximal degree in co-relation 19870. Up to 5975 conditions per place. [2024-01-27 15:29:18,684 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 114 selfloop transitions, 20 changer transitions 1/136 dead transitions. [2024-01-27 15:29:18,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 136 transitions, 807 flow [2024-01-27 15:29:18,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:29:18,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:29:18,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 139 transitions. [2024-01-27 15:29:18,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5450980392156862 [2024-01-27 15:29:18,686 INFO L175 Difference]: Start difference. First operand has 59 places, 66 transitions, 309 flow. Second operand 5 states and 139 transitions. [2024-01-27 15:29:18,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 136 transitions, 807 flow [2024-01-27 15:29:18,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 136 transitions, 791 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-01-27 15:29:18,729 INFO L231 Difference]: Finished difference. Result has 65 places, 76 transitions, 468 flow [2024-01-27 15:29:18,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=468, PETRI_PLACES=65, PETRI_TRANSITIONS=76} [2024-01-27 15:29:18,730 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 20 predicate places. [2024-01-27 15:29:18,730 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 76 transitions, 468 flow [2024-01-27 15:29:18,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:18,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:18,731 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] [2024-01-27 15:29:18,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-27 15:29:18,732 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 15:29:18,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:18,732 INFO L85 PathProgramCache]: Analyzing trace with hash -2116669345, now seen corresponding path program 5 times [2024-01-27 15:29:18,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:18,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121265234] [2024-01-27 15:29:18,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:18,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:18,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:18,906 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 15:29:18,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:18,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121265234] [2024-01-27 15:29:18,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121265234] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:18,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:18,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:29:18,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132423375] [2024-01-27 15:29:18,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:18,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:29:18,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:18,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:29:18,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:29:18,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 51 [2024-01-27 15:29:18,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 76 transitions, 468 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:18,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:18,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 51 [2024-01-27 15:29:18,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:20,162 INFO L124 PetriNetUnfolderBase]: 8054/11336 cut-off events. [2024-01-27 15:29:20,162 INFO L125 PetriNetUnfolderBase]: For 17521/17521 co-relation queries the response was YES. [2024-01-27 15:29:20,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32396 conditions, 11336 events. 8054/11336 cut-off events. For 17521/17521 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 58816 event pairs, 3985 based on Foata normal form. 1/9932 useless extension candidates. Maximal degree in co-relation 23537. Up to 7735 conditions per place. [2024-01-27 15:29:20,217 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 130 selfloop transitions, 22 changer transitions 1/154 dead transitions. [2024-01-27 15:29:20,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 154 transitions, 1075 flow [2024-01-27 15:29:20,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:29:20,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:29:20,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 137 transitions. [2024-01-27 15:29:20,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5372549019607843 [2024-01-27 15:29:20,222 INFO L175 Difference]: Start difference. First operand has 65 places, 76 transitions, 468 flow. Second operand 5 states and 137 transitions. [2024-01-27 15:29:20,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 154 transitions, 1075 flow [2024-01-27 15:29:20,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 154 transitions, 1011 flow, removed 32 selfloop flow, removed 0 redundant places. [2024-01-27 15:29:20,333 INFO L231 Difference]: Finished difference. Result has 72 places, 88 transitions, 627 flow [2024-01-27 15:29:20,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=627, PETRI_PLACES=72, PETRI_TRANSITIONS=88} [2024-01-27 15:29:20,335 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 27 predicate places. [2024-01-27 15:29:20,339 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 88 transitions, 627 flow [2024-01-27 15:29:20,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:20,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:20,339 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] [2024-01-27 15:29:20,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-27 15:29:20,340 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 15:29:20,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:20,341 INFO L85 PathProgramCache]: Analyzing trace with hash -288130251, now seen corresponding path program 6 times [2024-01-27 15:29:20,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:20,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793118924] [2024-01-27 15:29:20,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:20,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:20,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:20,493 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 15:29:20,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:20,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793118924] [2024-01-27 15:29:20,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793118924] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:20,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:20,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:29:20,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089190197] [2024-01-27 15:29:20,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:20,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:29:20,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:20,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:29:20,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:29:20,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 51 [2024-01-27 15:29:20,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 88 transitions, 627 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:20,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:20,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 51 [2024-01-27 15:29:20,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:21,712 INFO L124 PetriNetUnfolderBase]: 8226/11566 cut-off events. [2024-01-27 15:29:21,712 INFO L125 PetriNetUnfolderBase]: For 21444/21444 co-relation queries the response was YES. [2024-01-27 15:29:21,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34277 conditions, 11566 events. 8226/11566 cut-off events. For 21444/21444 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 59798 event pairs, 2584 based on Foata normal form. 1/10370 useless extension candidates. Maximal degree in co-relation 32943. Up to 5432 conditions per place. [2024-01-27 15:29:21,783 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 113 selfloop transitions, 45 changer transitions 1/160 dead transitions. [2024-01-27 15:29:21,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 160 transitions, 1213 flow [2024-01-27 15:29:21,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:29:21,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:29:21,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 136 transitions. [2024-01-27 15:29:21,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-01-27 15:29:21,786 INFO L175 Difference]: Start difference. First operand has 72 places, 88 transitions, 627 flow. Second operand 5 states and 136 transitions. [2024-01-27 15:29:21,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 160 transitions, 1213 flow [2024-01-27 15:29:21,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 160 transitions, 1208 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 15:29:21,908 INFO L231 Difference]: Finished difference. Result has 78 places, 102 transitions, 883 flow [2024-01-27 15:29:21,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=623, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=883, PETRI_PLACES=78, PETRI_TRANSITIONS=102} [2024-01-27 15:29:21,909 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 33 predicate places. [2024-01-27 15:29:21,910 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 102 transitions, 883 flow [2024-01-27 15:29:21,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:21,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:21,910 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] [2024-01-27 15:29:21,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-27 15:29:21,911 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 1 more)] === [2024-01-27 15:29:21,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:21,911 INFO L85 PathProgramCache]: Analyzing trace with hash 3162044, now seen corresponding path program 1 times [2024-01-27 15:29:21,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:21,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716130759] [2024-01-27 15:29:21,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:21,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:21,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:22,119 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 15:29:22,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:22,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716130759] [2024-01-27 15:29:22,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716130759] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:22,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:22,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:29:22,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403491760] [2024-01-27 15:29:22,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:22,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 15:29:22,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:22,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 15:29:22,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-01-27 15:29:22,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 51 [2024-01-27 15:29:22,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 102 transitions, 883 flow. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 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 15:29:22,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:22,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 51 [2024-01-27 15:29:22,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:24,070 INFO L124 PetriNetUnfolderBase]: 14764/20504 cut-off events. [2024-01-27 15:29:24,070 INFO L125 PetriNetUnfolderBase]: For 53199/53199 co-relation queries the response was YES. [2024-01-27 15:29:24,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66908 conditions, 20504 events. 14764/20504 cut-off events. For 53199/53199 co-relation queries the response was YES. Maximal size of possible extension queue 862. Compared 113415 event pairs, 5928 based on Foata normal form. 5/18358 useless extension candidates. Maximal degree in co-relation 64325. Up to 7755 conditions per place. [2024-01-27 15:29:24,216 INFO L140 encePairwiseOnDemand]: 43/51 looper letters, 166 selfloop transitions, 23 changer transitions 39/229 dead transitions. [2024-01-27 15:29:24,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 229 transitions, 2203 flow [2024-01-27 15:29:24,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 15:29:24,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 15:29:24,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 160 transitions. [2024-01-27 15:29:24,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5228758169934641 [2024-01-27 15:29:24,218 INFO L175 Difference]: Start difference. First operand has 78 places, 102 transitions, 883 flow. Second operand 6 states and 160 transitions. [2024-01-27 15:29:24,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 229 transitions, 2203 flow [2024-01-27 15:29:24,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 229 transitions, 2107 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-01-27 15:29:24,607 INFO L231 Difference]: Finished difference. Result has 86 places, 113 transitions, 1007 flow [2024-01-27 15:29:24,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=821, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1007, PETRI_PLACES=86, PETRI_TRANSITIONS=113} [2024-01-27 15:29:24,608 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 41 predicate places. [2024-01-27 15:29:24,609 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 113 transitions, 1007 flow [2024-01-27 15:29:24,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 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 15:29:24,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:24,609 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] [2024-01-27 15:29:24,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-27 15:29:24,610 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 1 more)] === [2024-01-27 15:29:24,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:24,611 INFO L85 PathProgramCache]: Analyzing trace with hash -2043538756, now seen corresponding path program 1 times [2024-01-27 15:29:24,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:24,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854248707] [2024-01-27 15:29:24,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:24,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:24,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:24,887 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 15:29:24,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:24,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854248707] [2024-01-27 15:29:24,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854248707] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:24,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:24,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:29:24,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889088945] [2024-01-27 15:29:24,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:24,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:29:24,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:24,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:29:24,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:29:24,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 51 [2024-01-27 15:29:24,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 113 transitions, 1007 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:24,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:24,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 51 [2024-01-27 15:29:24,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:26,427 INFO L124 PetriNetUnfolderBase]: 14088/19676 cut-off events. [2024-01-27 15:29:26,427 INFO L125 PetriNetUnfolderBase]: For 52562/52562 co-relation queries the response was YES. [2024-01-27 15:29:26,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65877 conditions, 19676 events. 14088/19676 cut-off events. For 52562/52562 co-relation queries the response was YES. Maximal size of possible extension queue 836. Compared 107998 event pairs, 4238 based on Foata normal form. 1/17610 useless extension candidates. Maximal degree in co-relation 65754. Up to 9426 conditions per place. [2024-01-27 15:29:26,682 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 177 selfloop transitions, 18 changer transitions 16/212 dead transitions. [2024-01-27 15:29:26,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 212 transitions, 2090 flow [2024-01-27 15:29:26,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:29:26,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:29:26,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 135 transitions. [2024-01-27 15:29:26,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5294117647058824 [2024-01-27 15:29:26,686 INFO L175 Difference]: Start difference. First operand has 86 places, 113 transitions, 1007 flow. Second operand 5 states and 135 transitions. [2024-01-27 15:29:26,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 212 transitions, 2090 flow [2024-01-27 15:29:26,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 212 transitions, 2035 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-01-27 15:29:26,973 INFO L231 Difference]: Finished difference. Result has 90 places, 120 transitions, 1121 flow [2024-01-27 15:29:26,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=983, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1121, PETRI_PLACES=90, PETRI_TRANSITIONS=120} [2024-01-27 15:29:26,974 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 45 predicate places. [2024-01-27 15:29:26,974 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 120 transitions, 1121 flow [2024-01-27 15:29:26,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:26,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:26,975 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] [2024-01-27 15:29:26,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-27 15:29:26,975 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:29:26,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:26,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1100579122, now seen corresponding path program 2 times [2024-01-27 15:29:26,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:26,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276024813] [2024-01-27 15:29:26,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:26,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:26,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:27,130 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 15:29:27,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:27,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276024813] [2024-01-27 15:29:27,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276024813] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:27,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:27,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:29:27,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402902826] [2024-01-27 15:29:27,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:27,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:29:27,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:27,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:29:27,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:29:27,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 51 [2024-01-27 15:29:27,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 120 transitions, 1121 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:27,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:27,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 51 [2024-01-27 15:29:27,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:28,710 INFO L124 PetriNetUnfolderBase]: 13810/19269 cut-off events. [2024-01-27 15:29:28,711 INFO L125 PetriNetUnfolderBase]: For 71365/71365 co-relation queries the response was YES. [2024-01-27 15:29:28,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65040 conditions, 19269 events. 13810/19269 cut-off events. For 71365/71365 co-relation queries the response was YES. Maximal size of possible extension queue 796. Compared 105440 event pairs, 6798 based on Foata normal form. 1/17541 useless extension candidates. Maximal degree in co-relation 60327. Up to 11148 conditions per place. [2024-01-27 15:29:28,837 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 146 selfloop transitions, 12 changer transitions 19/178 dead transitions. [2024-01-27 15:29:28,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 178 transitions, 1667 flow [2024-01-27 15:29:28,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:29:28,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:29:28,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2024-01-27 15:29:28,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5098039215686274 [2024-01-27 15:29:28,839 INFO L175 Difference]: Start difference. First operand has 90 places, 120 transitions, 1121 flow. Second operand 5 states and 130 transitions. [2024-01-27 15:29:28,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 178 transitions, 1667 flow [2024-01-27 15:29:29,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 178 transitions, 1630 flow, removed 16 selfloop flow, removed 1 redundant places. [2024-01-27 15:29:29,195 INFO L231 Difference]: Finished difference. Result has 94 places, 117 transitions, 1067 flow [2024-01-27 15:29:29,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1100, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1067, PETRI_PLACES=94, PETRI_TRANSITIONS=117} [2024-01-27 15:29:29,196 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 49 predicate places. [2024-01-27 15:29:29,196 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 117 transitions, 1067 flow [2024-01-27 15:29:29,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:29,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:29,196 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] [2024-01-27 15:29:29,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-27 15:29:29,197 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:29:29,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:29,197 INFO L85 PathProgramCache]: Analyzing trace with hash 708407042, now seen corresponding path program 3 times [2024-01-27 15:29:29,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:29,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605187171] [2024-01-27 15:29:29,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:29,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:29,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:29,340 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 15:29:29,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:29,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605187171] [2024-01-27 15:29:29,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605187171] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:29,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:29,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:29:29,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666878155] [2024-01-27 15:29:29,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:29,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:29:29,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:29,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:29:29,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:29:29,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 51 [2024-01-27 15:29:29,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 117 transitions, 1067 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:29,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:29,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 51 [2024-01-27 15:29:29,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:30,960 INFO L124 PetriNetUnfolderBase]: 13896/19376 cut-off events. [2024-01-27 15:29:30,960 INFO L125 PetriNetUnfolderBase]: For 70298/70298 co-relation queries the response was YES. [2024-01-27 15:29:31,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65454 conditions, 19376 events. 13896/19376 cut-off events. For 70298/70298 co-relation queries the response was YES. Maximal size of possible extension queue 790. Compared 105847 event pairs, 6416 based on Foata normal form. 1/17626 useless extension candidates. Maximal degree in co-relation 65369. Up to 11148 conditions per place. [2024-01-27 15:29:31,107 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 162 selfloop transitions, 18 changer transitions 14/195 dead transitions. [2024-01-27 15:29:31,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 195 transitions, 1834 flow [2024-01-27 15:29:31,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:29:31,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:29:31,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 139 transitions. [2024-01-27 15:29:31,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5450980392156862 [2024-01-27 15:29:31,109 INFO L175 Difference]: Start difference. First operand has 94 places, 117 transitions, 1067 flow. Second operand 5 states and 139 transitions. [2024-01-27 15:29:31,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 195 transitions, 1834 flow [2024-01-27 15:29:31,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 195 transitions, 1800 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-01-27 15:29:31,422 INFO L231 Difference]: Finished difference. Result has 94 places, 119 transitions, 1079 flow [2024-01-27 15:29:31,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1041, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1079, PETRI_PLACES=94, PETRI_TRANSITIONS=119} [2024-01-27 15:29:31,423 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 49 predicate places. [2024-01-27 15:29:31,423 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 119 transitions, 1079 flow [2024-01-27 15:29:31,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:31,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:31,423 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] [2024-01-27 15:29:31,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-27 15:29:31,424 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:29:31,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:31,424 INFO L85 PathProgramCache]: Analyzing trace with hash -133705151, now seen corresponding path program 1 times [2024-01-27 15:29:31,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:31,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479437199] [2024-01-27 15:29:31,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:31,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:31,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:31,617 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 15:29:31,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:31,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479437199] [2024-01-27 15:29:31,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479437199] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:31,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:31,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:29:31,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12203258] [2024-01-27 15:29:31,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:31,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 15:29:31,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:31,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 15:29:31,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-01-27 15:29:31,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 51 [2024-01-27 15:29:31,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 119 transitions, 1079 flow. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 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 15:29:31,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:31,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 51 [2024-01-27 15:29:31,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:33,864 INFO L124 PetriNetUnfolderBase]: 23027/31691 cut-off events. [2024-01-27 15:29:33,864 INFO L125 PetriNetUnfolderBase]: For 130969/130969 co-relation queries the response was YES. [2024-01-27 15:29:34,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111009 conditions, 31691 events. 23027/31691 cut-off events. For 130969/130969 co-relation queries the response was YES. Maximal size of possible extension queue 1234. Compared 181433 event pairs, 8452 based on Foata normal form. 5/28834 useless extension candidates. Maximal degree in co-relation 106873. Up to 13997 conditions per place. [2024-01-27 15:29:34,138 INFO L140 encePairwiseOnDemand]: 43/51 looper letters, 189 selfloop transitions, 30 changer transitions 10/230 dead transitions. [2024-01-27 15:29:34,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 230 transitions, 2423 flow [2024-01-27 15:29:34,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 15:29:34,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 15:29:34,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2024-01-27 15:29:34,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4542483660130719 [2024-01-27 15:29:34,140 INFO L175 Difference]: Start difference. First operand has 94 places, 119 transitions, 1079 flow. Second operand 6 states and 139 transitions. [2024-01-27 15:29:34,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 230 transitions, 2423 flow [2024-01-27 15:29:34,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 230 transitions, 2347 flow, removed 30 selfloop flow, removed 2 redundant places. [2024-01-27 15:29:34,801 INFO L231 Difference]: Finished difference. Result has 99 places, 135 transitions, 1331 flow [2024-01-27 15:29:34,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1035, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1331, PETRI_PLACES=99, PETRI_TRANSITIONS=135} [2024-01-27 15:29:34,802 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 54 predicate places. [2024-01-27 15:29:34,802 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 135 transitions, 1331 flow [2024-01-27 15:29:34,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 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 15:29:34,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:34,802 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] [2024-01-27 15:29:34,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-27 15:29:34,803 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:29:34,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:34,803 INFO L85 PathProgramCache]: Analyzing trace with hash 487248546, now seen corresponding path program 4 times [2024-01-27 15:29:34,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:34,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399644291] [2024-01-27 15:29:34,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:34,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:34,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:34,943 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 15:29:34,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:34,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399644291] [2024-01-27 15:29:34,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399644291] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:34,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:34,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:29:34,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427895622] [2024-01-27 15:29:34,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:34,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:29:34,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:34,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:29:34,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:29:34,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 51 [2024-01-27 15:29:34,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 135 transitions, 1331 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:34,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:34,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 51 [2024-01-27 15:29:34,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:37,189 INFO L124 PetriNetUnfolderBase]: 20299/27878 cut-off events. [2024-01-27 15:29:37,189 INFO L125 PetriNetUnfolderBase]: For 111612/111612 co-relation queries the response was YES. [2024-01-27 15:29:37,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100706 conditions, 27878 events. 20299/27878 cut-off events. For 111612/111612 co-relation queries the response was YES. Maximal size of possible extension queue 1125. Compared 153543 event pairs, 11924 based on Foata normal form. 1/25255 useless extension candidates. Maximal degree in co-relation 96645. Up to 22690 conditions per place. [2024-01-27 15:29:37,488 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 159 selfloop transitions, 10 changer transitions 21/191 dead transitions. [2024-01-27 15:29:37,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 191 transitions, 1877 flow [2024-01-27 15:29:37,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:29:37,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:29:37,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-01-27 15:29:37,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5019607843137255 [2024-01-27 15:29:37,494 INFO L175 Difference]: Start difference. First operand has 99 places, 135 transitions, 1331 flow. Second operand 5 states and 128 transitions. [2024-01-27 15:29:37,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 191 transitions, 1877 flow [2024-01-27 15:29:38,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 191 transitions, 1840 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-01-27 15:29:38,126 INFO L231 Difference]: Finished difference. Result has 103 places, 130 transitions, 1225 flow [2024-01-27 15:29:38,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1301, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1225, PETRI_PLACES=103, PETRI_TRANSITIONS=130} [2024-01-27 15:29:38,127 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 58 predicate places. [2024-01-27 15:29:38,127 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 130 transitions, 1225 flow [2024-01-27 15:29:38,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:38,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:38,128 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] [2024-01-27 15:29:38,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-01-27 15:29:38,128 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:29:38,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:38,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1900501384, now seen corresponding path program 5 times [2024-01-27 15:29:38,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:38,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411170799] [2024-01-27 15:29:38,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:38,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:38,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:38,243 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 15:29:38,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:38,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411170799] [2024-01-27 15:29:38,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411170799] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:38,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:38,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:29:38,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259303612] [2024-01-27 15:29:38,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:38,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:29:38,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:38,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:29:38,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:29:38,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 51 [2024-01-27 15:29:38,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 130 transitions, 1225 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:38,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:38,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 51 [2024-01-27 15:29:38,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:41,447 INFO L124 PetriNetUnfolderBase]: 20621/28371 cut-off events. [2024-01-27 15:29:41,447 INFO L125 PetriNetUnfolderBase]: For 114444/114444 co-relation queries the response was YES. [2024-01-27 15:29:41,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100564 conditions, 28371 events. 20621/28371 cut-off events. For 114444/114444 co-relation queries the response was YES. Maximal size of possible extension queue 1154. Compared 156739 event pairs, 6396 based on Foata normal form. 1/25714 useless extension candidates. Maximal degree in co-relation 100486. Up to 15866 conditions per place. [2024-01-27 15:29:41,618 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 186 selfloop transitions, 15 changer transitions 12/214 dead transitions. [2024-01-27 15:29:41,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 214 transitions, 2104 flow [2024-01-27 15:29:41,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:29:41,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:29:41,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 135 transitions. [2024-01-27 15:29:41,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5294117647058824 [2024-01-27 15:29:41,620 INFO L175 Difference]: Start difference. First operand has 103 places, 130 transitions, 1225 flow. Second operand 5 states and 135 transitions. [2024-01-27 15:29:41,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 214 transitions, 2104 flow [2024-01-27 15:29:42,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 214 transitions, 2054 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-01-27 15:29:42,078 INFO L231 Difference]: Finished difference. Result has 103 places, 138 transitions, 1332 flow [2024-01-27 15:29:42,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1191, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1332, PETRI_PLACES=103, PETRI_TRANSITIONS=138} [2024-01-27 15:29:42,079 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 58 predicate places. [2024-01-27 15:29:42,079 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 138 transitions, 1332 flow [2024-01-27 15:29:42,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:42,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:42,080 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] [2024-01-27 15:29:42,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-01-27 15:29:42,080 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:29:42,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:42,080 INFO L85 PathProgramCache]: Analyzing trace with hash -57963486, now seen corresponding path program 6 times [2024-01-27 15:29:42,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:42,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326341943] [2024-01-27 15:29:42,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:42,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:42,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:42,237 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 15:29:42,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:42,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326341943] [2024-01-27 15:29:42,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326341943] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:42,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:42,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:29:42,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907659723] [2024-01-27 15:29:42,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:42,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:29:42,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:42,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:29:42,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:29:42,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 51 [2024-01-27 15:29:42,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 138 transitions, 1332 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:42,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:42,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 51 [2024-01-27 15:29:42,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand