./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-match-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a340643f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/chl-match-subst.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2c931aeff3bd4feb775048ea000220a43a3b08d8a3667f51cb57a0babc9201aa --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 15:23:02,183 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 15:23:02,286 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 15:23:02,290 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 15:23:02,291 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 15:23:02,314 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 15:23:02,314 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 15:23:02,315 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 15:23:02,315 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 15:23:02,318 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 15:23:02,319 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 15:23:02,319 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 15:23:02,320 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 15:23:02,321 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 15:23:02,321 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 15:23:02,321 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 15:23:02,321 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 15:23:02,321 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 15:23:02,322 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 15:23:02,322 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 15:23:02,322 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 15:23:02,322 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 15:23:02,322 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 15:23:02,323 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 15:23:02,323 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 15:23:02,323 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 15:23:02,323 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 15:23:02,323 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 15:23:02,324 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 15:23:02,324 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 15:23:02,325 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 15:23:02,325 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 15:23:02,325 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:23:02,325 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 15:23:02,326 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 15:23:02,326 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 15:23:02,326 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 15:23:02,326 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 15:23:02,326 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 15:23:02,326 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 15:23:02,326 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 15:23:02,327 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 15:23:02,327 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 15:23:02,327 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c931aeff3bd4feb775048ea000220a43a3b08d8a3667f51cb57a0babc9201aa [2024-01-27 15:23:02,519 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 15:23:02,538 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 15:23:02,540 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 15:23:02,540 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 15:23:02,541 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 15:23:02,541 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-match-subst.wvr.c [2024-01-27 15:23:03,561 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 15:23:03,794 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 15:23:03,795 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-match-subst.wvr.c [2024-01-27 15:23:03,801 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1939b8a4f/ce32c6d48ab748cea71c9adedba6126b/FLAG478373b71 [2024-01-27 15:23:03,811 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1939b8a4f/ce32c6d48ab748cea71c9adedba6126b [2024-01-27 15:23:03,813 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 15:23:03,814 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 15:23:03,816 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 15:23:03,816 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 15:23:03,820 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 15:23:03,821 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:23:03" (1/1) ... [2024-01-27 15:23:03,821 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a48a54f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:23:03, skipping insertion in model container [2024-01-27 15:23:03,821 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:23:03" (1/1) ... [2024-01-27 15:23:03,844 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 15:23:03,995 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-match-subst.wvr.c[3056,3069] [2024-01-27 15:23:04,002 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:23:04,014 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 15:23:04,045 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-match-subst.wvr.c[3056,3069] [2024-01-27 15:23:04,047 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:23:04,062 INFO L206 MainTranslator]: Completed translation [2024-01-27 15:23:04,062 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:23:04 WrapperNode [2024-01-27 15:23:04,062 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 15:23:04,063 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 15:23:04,063 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 15:23:04,063 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 15:23:04,069 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:23:04" (1/1) ... [2024-01-27 15:23:04,078 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:23:04" (1/1) ... [2024-01-27 15:23:04,115 INFO L138 Inliner]: procedures = 23, calls = 34, calls flagged for inlining = 12, calls inlined = 22, statements flattened = 217 [2024-01-27 15:23:04,116 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 15:23:04,116 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 15:23:04,116 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 15:23:04,116 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 15:23:04,125 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:23:04" (1/1) ... [2024-01-27 15:23:04,125 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:23:04" (1/1) ... [2024-01-27 15:23:04,128 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:23:04" (1/1) ... [2024-01-27 15:23:04,168 INFO L175 MemorySlicer]: Split 8 memory accesses to 4 slices as follows [2, 2, 2, 2]. 25 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2024-01-27 15:23:04,169 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:23:04" (1/1) ... [2024-01-27 15:23:04,169 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:23:04" (1/1) ... [2024-01-27 15:23:04,174 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:23:04" (1/1) ... [2024-01-27 15:23:04,176 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:23:04" (1/1) ... [2024-01-27 15:23:04,177 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:23:04" (1/1) ... [2024-01-27 15:23:04,191 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:23:04" (1/1) ... [2024-01-27 15:23:04,193 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 15:23:04,194 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 15:23:04,194 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 15:23:04,194 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 15:23:04,195 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:23:04" (1/1) ... [2024-01-27 15:23:04,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:23:04,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:23:04,270 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-27 15:23:04,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-27 15:23:04,324 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 15:23:04,324 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-27 15:23:04,324 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-27 15:23:04,324 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-27 15:23:04,325 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-27 15:23:04,325 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-27 15:23:04,325 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-27 15:23:04,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 15:23:04,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 15:23:04,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 15:23:04,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-27 15:23:04,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 15:23:04,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 15:23:04,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 15:23:04,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 15:23:04,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-27 15:23:04,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 15:23:04,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 15:23:04,328 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-27 15:23:04,328 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-27 15:23:04,328 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-27 15:23:04,328 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-27 15:23:04,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 15:23:04,329 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-27 15:23:04,421 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 15:23:04,423 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 15:23:04,692 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 15:23:04,692 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 15:23:05,007 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 15:23:05,007 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-27 15:23:05,008 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:23:05 BoogieIcfgContainer [2024-01-27 15:23:05,008 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 15:23:05,010 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 15:23:05,010 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 15:23:05,013 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 15:23:05,013 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 03:23:03" (1/3) ... [2024-01-27 15:23:05,014 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72879f06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:23:05, skipping insertion in model container [2024-01-27 15:23:05,014 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:23:04" (2/3) ... [2024-01-27 15:23:05,014 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72879f06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:23:05, skipping insertion in model container [2024-01-27 15:23:05,014 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:23:05" (3/3) ... [2024-01-27 15:23:05,015 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-match-subst.wvr.c [2024-01-27 15:23:05,023 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 15:23:05,031 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 15:23:05,031 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-27 15:23:05,031 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 15:23:05,077 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-01-27 15:23:05,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 31 places, 21 transitions, 63 flow [2024-01-27 15:23:05,149 INFO L124 PetriNetUnfolderBase]: 0/18 cut-off events. [2024-01-27 15:23:05,149 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-27 15:23:05,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 18 events. 0/18 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-01-27 15:23:05,151 INFO L82 GeneralOperation]: Start removeDead. Operand has 31 places, 21 transitions, 63 flow [2024-01-27 15:23:05,154 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 27 places, 17 transitions, 52 flow [2024-01-27 15:23:05,169 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 15:23:05,177 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;@2c45ae2c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 15:23:05,177 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-01-27 15:23:05,189 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 15:23:05,189 INFO L124 PetriNetUnfolderBase]: 0/16 cut-off events. [2024-01-27 15:23:05,190 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-27 15:23:05,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:23:05,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:23:05,191 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:23:05,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:23:05,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1701418903, now seen corresponding path program 1 times [2024-01-27 15:23:05,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:23:05,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785219072] [2024-01-27 15:23:05,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:23:05,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:23:05,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:23:06,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:23:06,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:23:06,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785219072] [2024-01-27 15:23:06,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785219072] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:23:06,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:23:06,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:23:06,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642106015] [2024-01-27 15:23:06,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:23:06,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:23:06,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:23:06,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:23:06,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:23:06,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 21 [2024-01-27 15:23:06,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 52 flow. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:23:06,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:23:06,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 21 [2024-01-27 15:23:06,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:23:06,982 INFO L124 PetriNetUnfolderBase]: 38/102 cut-off events. [2024-01-27 15:23:06,983 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-01-27 15:23:06,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235 conditions, 102 events. 38/102 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 283 event pairs, 2 based on Foata normal form. 1/103 useless extension candidates. Maximal degree in co-relation 169. Up to 38 conditions per place. [2024-01-27 15:23:06,985 INFO L140 encePairwiseOnDemand]: 16/21 looper letters, 32 selfloop transitions, 6 changer transitions 7/46 dead transitions. [2024-01-27 15:23:06,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 46 transitions, 230 flow [2024-01-27 15:23:06,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 15:23:06,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 15:23:06,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 70 transitions. [2024-01-27 15:23:06,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-01-27 15:23:06,996 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 52 flow. Second operand 6 states and 70 transitions. [2024-01-27 15:23:06,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 46 transitions, 230 flow [2024-01-27 15:23:06,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 46 transitions, 198 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-27 15:23:07,000 INFO L231 Difference]: Finished difference. Result has 29 places, 21 transitions, 73 flow [2024-01-27 15:23:07,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=73, PETRI_PLACES=29, PETRI_TRANSITIONS=21} [2024-01-27 15:23:07,004 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2024-01-27 15:23:07,004 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 21 transitions, 73 flow [2024-01-27 15:23:07,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:23:07,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:23:07,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:23:07,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 15:23:07,005 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:23:07,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:23:07,006 INFO L85 PathProgramCache]: Analyzing trace with hash 953275551, now seen corresponding path program 2 times [2024-01-27 15:23:07,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:23:07,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979928503] [2024-01-27 15:23:07,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:23:07,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:23:07,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:23:07,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:23:07,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:23:07,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979928503] [2024-01-27 15:23:07,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979928503] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:23:07,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:23:07,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:23:07,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681554669] [2024-01-27 15:23:07,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:23:07,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:23:07,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:23:07,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:23:07,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:23:07,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 21 [2024-01-27 15:23:07,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 21 transitions, 73 flow. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:23:07,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:23:07,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 21 [2024-01-27 15:23:07,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:23:07,856 INFO L124 PetriNetUnfolderBase]: 38/119 cut-off events. [2024-01-27 15:23:07,856 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2024-01-27 15:23:07,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 327 conditions, 119 events. 38/119 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 410 event pairs, 6 based on Foata normal form. 1/120 useless extension candidates. Maximal degree in co-relation 309. Up to 58 conditions per place. [2024-01-27 15:23:07,859 INFO L140 encePairwiseOnDemand]: 16/21 looper letters, 30 selfloop transitions, 7 changer transitions 9/47 dead transitions. [2024-01-27 15:23:07,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 47 transitions, 237 flow [2024-01-27 15:23:07,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 15:23:07,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 15:23:07,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 70 transitions. [2024-01-27 15:23:07,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-01-27 15:23:07,863 INFO L175 Difference]: Start difference. First operand has 29 places, 21 transitions, 73 flow. Second operand 6 states and 70 transitions. [2024-01-27 15:23:07,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 47 transitions, 237 flow [2024-01-27 15:23:07,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 47 transitions, 233 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-01-27 15:23:07,868 INFO L231 Difference]: Finished difference. Result has 35 places, 22 transitions, 102 flow [2024-01-27 15:23:07,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=102, PETRI_PLACES=35, PETRI_TRANSITIONS=22} [2024-01-27 15:23:07,869 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 8 predicate places. [2024-01-27 15:23:07,870 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 22 transitions, 102 flow [2024-01-27 15:23:07,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:23:07,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:23:07,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:23:07,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 15:23:07,873 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:23:07,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:23:07,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1095515803, now seen corresponding path program 3 times [2024-01-27 15:23:07,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:23:07,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003073246] [2024-01-27 15:23:07,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:23:07,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:23:07,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:23:08,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:23:08,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:23:08,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003073246] [2024-01-27 15:23:08,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003073246] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:23:08,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:23:08,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:23:08,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148172913] [2024-01-27 15:23:08,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:23:08,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:23:08,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:23:08,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:23:08,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:23:08,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 21 [2024-01-27 15:23:08,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 22 transitions, 102 flow. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:23:08,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:23:08,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 21 [2024-01-27 15:23:08,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:23:08,716 INFO L124 PetriNetUnfolderBase]: 33/105 cut-off events. [2024-01-27 15:23:08,717 INFO L125 PetriNetUnfolderBase]: For 160/160 co-relation queries the response was YES. [2024-01-27 15:23:08,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 351 conditions, 105 events. 33/105 cut-off events. For 160/160 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 334 event pairs, 2 based on Foata normal form. 1/106 useless extension candidates. Maximal degree in co-relation 334. Up to 51 conditions per place. [2024-01-27 15:23:08,718 INFO L140 encePairwiseOnDemand]: 16/21 looper letters, 27 selfloop transitions, 6 changer transitions 11/45 dead transitions. [2024-01-27 15:23:08,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 45 transitions, 259 flow [2024-01-27 15:23:08,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 15:23:08,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 15:23:08,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 68 transitions. [2024-01-27 15:23:08,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5396825396825397 [2024-01-27 15:23:08,720 INFO L175 Difference]: Start difference. First operand has 35 places, 22 transitions, 102 flow. Second operand 6 states and 68 transitions. [2024-01-27 15:23:08,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 45 transitions, 259 flow [2024-01-27 15:23:08,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 45 transitions, 245 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-01-27 15:23:08,722 INFO L231 Difference]: Finished difference. Result has 39 places, 21 transitions, 102 flow [2024-01-27 15:23:08,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=102, PETRI_PLACES=39, PETRI_TRANSITIONS=21} [2024-01-27 15:23:08,723 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 12 predicate places. [2024-01-27 15:23:08,723 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 21 transitions, 102 flow [2024-01-27 15:23:08,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:23:08,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:23:08,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:23:08,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-27 15:23:08,724 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:23:08,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:23:08,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1730750787, now seen corresponding path program 4 times [2024-01-27 15:23:08,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:23:08,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273260752] [2024-01-27 15:23:08,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:23:08,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:23:08,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:23:09,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:23:09,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:23:09,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273260752] [2024-01-27 15:23:09,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273260752] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:23:09,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:23:09,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:23:09,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443690500] [2024-01-27 15:23:09,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:23:09,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:23:09,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:23:09,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:23:09,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:23:09,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 21 [2024-01-27 15:23:09,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 21 transitions, 102 flow. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:23:09,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:23:09,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 21 [2024-01-27 15:23:09,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:23:09,594 INFO L124 PetriNetUnfolderBase]: 17/60 cut-off events. [2024-01-27 15:23:09,594 INFO L125 PetriNetUnfolderBase]: For 94/94 co-relation queries the response was YES. [2024-01-27 15:23:09,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 220 conditions, 60 events. 17/60 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 137 event pairs, 0 based on Foata normal form. 1/61 useless extension candidates. Maximal degree in co-relation 205. Up to 20 conditions per place. [2024-01-27 15:23:09,595 INFO L140 encePairwiseOnDemand]: 16/21 looper letters, 18 selfloop transitions, 5 changer transitions 13/37 dead transitions. [2024-01-27 15:23:09,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 37 transitions, 221 flow [2024-01-27 15:23:09,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 15:23:09,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 15:23:09,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 60 transitions. [2024-01-27 15:23:09,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-01-27 15:23:09,596 INFO L175 Difference]: Start difference. First operand has 39 places, 21 transitions, 102 flow. Second operand 6 states and 60 transitions. [2024-01-27 15:23:09,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 37 transitions, 221 flow [2024-01-27 15:23:09,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 37 transitions, 204 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-01-27 15:23:09,598 INFO L231 Difference]: Finished difference. Result has 38 places, 19 transitions, 83 flow [2024-01-27 15:23:09,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=83, PETRI_PLACES=38, PETRI_TRANSITIONS=19} [2024-01-27 15:23:09,598 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2024-01-27 15:23:09,599 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 19 transitions, 83 flow [2024-01-27 15:23:09,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:23:09,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:23:09,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:23:09,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-27 15:23:09,599 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:23:09,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:23:09,600 INFO L85 PathProgramCache]: Analyzing trace with hash 429796131, now seen corresponding path program 5 times [2024-01-27 15:23:09,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:23:09,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767981453] [2024-01-27 15:23:09,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:23:09,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:23:09,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:23:10,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:23:10,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:23:10,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767981453] [2024-01-27 15:23:10,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767981453] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:23:10,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:23:10,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:23:10,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471586905] [2024-01-27 15:23:10,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:23:10,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:23:10,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:23:10,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:23:10,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:23:10,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 21 [2024-01-27 15:23:10,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 19 transitions, 83 flow. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:23:10,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:23:10,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 21 [2024-01-27 15:23:10,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:23:10,460 INFO L124 PetriNetUnfolderBase]: 8/41 cut-off events. [2024-01-27 15:23:10,460 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2024-01-27 15:23:10,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 41 events. 8/41 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 59 event pairs, 0 based on Foata normal form. 1/42 useless extension candidates. Maximal degree in co-relation 134. Up to 19 conditions per place. [2024-01-27 15:23:10,461 INFO L140 encePairwiseOnDemand]: 16/21 looper letters, 15 selfloop transitions, 3 changer transitions 12/31 dead transitions. [2024-01-27 15:23:10,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 31 transitions, 180 flow [2024-01-27 15:23:10,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 15:23:10,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 15:23:10,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 55 transitions. [2024-01-27 15:23:10,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4365079365079365 [2024-01-27 15:23:10,462 INFO L175 Difference]: Start difference. First operand has 38 places, 19 transitions, 83 flow. Second operand 6 states and 55 transitions. [2024-01-27 15:23:10,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 31 transitions, 180 flow [2024-01-27 15:23:10,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 31 transitions, 146 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-01-27 15:23:10,464 INFO L231 Difference]: Finished difference. Result has 34 places, 17 transitions, 58 flow [2024-01-27 15:23:10,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=58, PETRI_PLACES=34, PETRI_TRANSITIONS=17} [2024-01-27 15:23:10,464 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2024-01-27 15:23:10,464 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 17 transitions, 58 flow [2024-01-27 15:23:10,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:23:10,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:23:10,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:23:10,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-27 15:23:10,465 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:23:10,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:23:10,466 INFO L85 PathProgramCache]: Analyzing trace with hash 2040737089, now seen corresponding path program 6 times [2024-01-27 15:23:10,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:23:10,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909861346] [2024-01-27 15:23:10,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:23:10,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:23:10,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:23:11,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:23:11,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:23:11,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909861346] [2024-01-27 15:23:11,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909861346] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:23:11,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:23:11,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:23:11,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650905550] [2024-01-27 15:23:11,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:23:11,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:23:11,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:23:11,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:23:11,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:23:11,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 21 [2024-01-27 15:23:11,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 17 transitions, 58 flow. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:23:11,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:23:11,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 21 [2024-01-27 15:23:11,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:23:11,281 INFO L124 PetriNetUnfolderBase]: 3/21 cut-off events. [2024-01-27 15:23:11,281 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-01-27 15:23:11,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 21 events. 3/21 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 9 event pairs, 0 based on Foata normal form. 1/22 useless extension candidates. Maximal degree in co-relation 62. Up to 8 conditions per place. [2024-01-27 15:23:11,281 INFO L140 encePairwiseOnDemand]: 16/21 looper letters, 0 selfloop transitions, 0 changer transitions 18/18 dead transitions. [2024-01-27 15:23:11,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 18 transitions, 94 flow [2024-01-27 15:23:11,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 15:23:11,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 15:23:11,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 43 transitions. [2024-01-27 15:23:11,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3412698412698413 [2024-01-27 15:23:11,283 INFO L175 Difference]: Start difference. First operand has 34 places, 17 transitions, 58 flow. Second operand 6 states and 43 transitions. [2024-01-27 15:23:11,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 18 transitions, 94 flow [2024-01-27 15:23:11,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 18 transitions, 82 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-01-27 15:23:11,284 INFO L231 Difference]: Finished difference. Result has 29 places, 0 transitions, 0 flow [2024-01-27 15:23:11,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=29, PETRI_TRANSITIONS=0} [2024-01-27 15:23:11,284 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2024-01-27 15:23:11,284 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 0 transitions, 0 flow [2024-01-27 15:23:11,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:23:11,287 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-01-27 15:23:11,287 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2024-01-27 15:23:11,287 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-01-27 15:23:11,287 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-01-27 15:23:11,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-27 15:23:11,288 INFO L445 BasicCegarLoop]: Path program histogram: [6] [2024-01-27 15:23:11,290 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-27 15:23:11,290 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-27 15:23:11,294 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 03:23:11 BasicIcfg [2024-01-27 15:23:11,294 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-27 15:23:11,295 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-01-27 15:23:11,295 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-01-27 15:23:11,295 INFO L274 PluginConnector]: Witness Printer initialized [2024-01-27 15:23:11,295 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:23:05" (3/4) ... [2024-01-27 15:23:11,297 INFO L137 WitnessPrinter]: Generating witness for correct program [2024-01-27 15:23:11,299 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-01-27 15:23:11,299 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-01-27 15:23:11,299 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2024-01-27 15:23:11,303 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 97 nodes and edges [2024-01-27 15:23:11,303 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2024-01-27 15:23:11,303 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-01-27 15:23:11,304 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-01-27 15:23:11,368 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-01-27 15:23:11,368 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-01-27 15:23:11,368 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-01-27 15:23:11,369 INFO L158 Benchmark]: Toolchain (without parser) took 7554.72ms. Allocated memory was 239.1MB in the beginning and 610.3MB in the end (delta: 371.2MB). Free memory was 208.6MB in the beginning and 399.2MB in the end (delta: -190.6MB). Peak memory consumption was 180.6MB. Max. memory is 16.1GB. [2024-01-27 15:23:11,369 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 130.0MB. Free memory was 90.8MB in the beginning and 90.7MB in the end (delta: 120.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-01-27 15:23:11,369 INFO L158 Benchmark]: CACSL2BoogieTranslator took 247.12ms. Allocated memory is still 239.1MB. Free memory was 208.6MB in the beginning and 196.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-01-27 15:23:11,369 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.44ms. Allocated memory is still 239.1MB. Free memory was 196.1MB in the beginning and 194.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-27 15:23:11,370 INFO L158 Benchmark]: Boogie Preprocessor took 77.47ms. Allocated memory is still 239.1MB. Free memory was 194.0MB in the beginning and 190.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-01-27 15:23:11,370 INFO L158 Benchmark]: RCFGBuilder took 814.25ms. Allocated memory is still 239.1MB. Free memory was 190.8MB in the beginning and 101.7MB in the end (delta: 89.1MB). Peak memory consumption was 88.1MB. Max. memory is 16.1GB. [2024-01-27 15:23:11,370 INFO L158 Benchmark]: TraceAbstraction took 6284.41ms. Allocated memory was 239.1MB in the beginning and 610.3MB in the end (delta: 371.2MB). Free memory was 100.6MB in the beginning and 404.5MB in the end (delta: -303.8MB). Peak memory consumption was 67.4MB. Max. memory is 16.1GB. [2024-01-27 15:23:11,370 INFO L158 Benchmark]: Witness Printer took 73.33ms. Allocated memory is still 610.3MB. Free memory was 404.5MB in the beginning and 399.2MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-01-27 15:23:11,371 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 130.0MB. Free memory was 90.8MB in the beginning and 90.7MB in the end (delta: 120.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 247.12ms. Allocated memory is still 239.1MB. Free memory was 208.6MB in the beginning and 196.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.44ms. Allocated memory is still 239.1MB. Free memory was 196.1MB in the beginning and 194.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 77.47ms. Allocated memory is still 239.1MB. Free memory was 194.0MB in the beginning and 190.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 814.25ms. Allocated memory is still 239.1MB. Free memory was 190.8MB in the beginning and 101.7MB in the end (delta: 89.1MB). Peak memory consumption was 88.1MB. Max. memory is 16.1GB. * TraceAbstraction took 6284.41ms. Allocated memory was 239.1MB in the beginning and 610.3MB in the end (delta: 371.2MB). Free memory was 100.6MB in the beginning and 404.5MB in the end (delta: -303.8MB). Peak memory consumption was 67.4MB. Max. memory is 16.1GB. * Witness Printer took 73.33ms. Allocated memory is still 610.3MB. Free memory was 404.5MB in the beginning and 399.2MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 89]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 31 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.2s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 180 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 180 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 430 IncrementalHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 0 mSDtfsCounter, 430 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=102occurred in iteration=2, InterpolantAutomatonStates: 36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 102 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 2489 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-01-27 15:23:11,390 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE