./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-exp-term-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-exp-term-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 2a508120cc7913f10b79dda7ca65a8b88f829725798d520aee5d1c1d04a1fc13 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 15:21:54,470 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 15:21:54,539 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 15:21:54,544 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 15:21:54,545 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 15:21:54,570 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 15:21:54,570 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 15:21:54,571 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 15:21:54,571 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 15:21:54,574 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 15:21:54,575 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 15:21:54,575 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 15:21:54,576 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 15:21:54,577 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 15:21:54,577 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 15:21:54,577 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 15:21:54,577 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 15:21:54,578 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 15:21:54,578 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 15:21:54,578 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 15:21:54,578 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 15:21:54,579 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 15:21:54,579 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 15:21:54,579 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 15:21:54,579 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 15:21:54,579 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 15:21:54,580 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 15:21:54,580 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 15:21:54,580 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 15:21:54,580 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 15:21:54,581 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 15:21:54,581 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 15:21:54,582 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:21:54,582 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 15:21:54,582 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 15:21:54,582 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 15:21:54,582 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 15:21:54,582 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 15:21:54,583 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 15:21:54,583 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 15:21:54,583 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 15:21:54,583 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 15:21:54,583 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 15:21:54,584 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a508120cc7913f10b79dda7ca65a8b88f829725798d520aee5d1c1d04a1fc13 [2024-01-27 15:21:54,799 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 15:21:54,819 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 15:21:54,822 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 15:21:54,822 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 15:21:54,823 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 15:21:54,824 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-exp-term-subst.wvr.c [2024-01-27 15:21:55,930 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 15:21:56,117 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 15:21:56,118 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-exp-term-subst.wvr.c [2024-01-27 15:21:56,124 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff2cc81fe/2f71927279a447169719bf9bc7e4195c/FLAG2e9847162 [2024-01-27 15:21:56,134 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff2cc81fe/2f71927279a447169719bf9bc7e4195c [2024-01-27 15:21:56,137 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 15:21:56,138 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 15:21:56,138 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 15:21:56,139 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 15:21:56,142 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 15:21:56,143 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:21:56" (1/1) ... [2024-01-27 15:21:56,144 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2140d8b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:21:56, skipping insertion in model container [2024-01-27 15:21:56,144 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:21:56" (1/1) ... [2024-01-27 15:21:56,160 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 15:21:56,351 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-exp-term-subst.wvr.c[3111,3124] [2024-01-27 15:21:56,356 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:21:56,371 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 15:21:56,397 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-exp-term-subst.wvr.c[3111,3124] [2024-01-27 15:21:56,416 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:21:56,427 INFO L206 MainTranslator]: Completed translation [2024-01-27 15:21:56,428 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:21:56 WrapperNode [2024-01-27 15:21:56,428 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 15:21:56,429 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 15:21:56,430 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 15:21:56,430 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 15:21:56,435 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:21:56" (1/1) ... [2024-01-27 15:21:56,449 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:21:56" (1/1) ... [2024-01-27 15:21:56,475 INFO L138 Inliner]: procedures = 23, calls = 31, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 184 [2024-01-27 15:21:56,475 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 15:21:56,476 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 15:21:56,476 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 15:21:56,476 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 15:21:56,489 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:21:56" (1/1) ... [2024-01-27 15:21:56,490 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:21:56" (1/1) ... [2024-01-27 15:21:56,492 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:21:56" (1/1) ... [2024-01-27 15:21:56,503 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 15:21:56,504 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:21:56" (1/1) ... [2024-01-27 15:21:56,504 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:21:56" (1/1) ... [2024-01-27 15:21:56,508 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:21:56" (1/1) ... [2024-01-27 15:21:56,510 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:21:56" (1/1) ... [2024-01-27 15:21:56,511 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:21:56" (1/1) ... [2024-01-27 15:21:56,512 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:21:56" (1/1) ... [2024-01-27 15:21:56,515 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 15:21:56,515 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 15:21:56,515 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 15:21:56,516 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 15:21:56,516 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:21:56" (1/1) ... [2024-01-27 15:21:56,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:21:56,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:21:56,542 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 15:21:56,568 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 15:21:56,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 15:21:56,589 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-27 15:21:56,589 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-27 15:21:56,590 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-27 15:21:56,590 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-27 15:21:56,590 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-27 15:21:56,590 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-27 15:21:56,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 15:21:56,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 15:21:56,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 15:21:56,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-27 15:21:56,592 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 15:21:56,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 15:21:56,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 15:21:56,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 15:21:56,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-27 15:21:56,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 15:21:56,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 15:21:56,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-27 15:21:56,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-27 15:21:56,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-27 15:21:56,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-27 15:21:56,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 15:21:56,595 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 15:21:56,707 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 15:21:56,709 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 15:21:56,950 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 15:21:56,950 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 15:21:57,300 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 15:21:57,301 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-27 15:21:57,302 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:21:57 BoogieIcfgContainer [2024-01-27 15:21:57,302 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 15:21:57,303 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 15:21:57,303 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 15:21:57,306 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 15:21:57,306 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 03:21:56" (1/3) ... [2024-01-27 15:21:57,306 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b21e0bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:21:57, skipping insertion in model container [2024-01-27 15:21:57,306 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:21:56" (2/3) ... [2024-01-27 15:21:57,307 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b21e0bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:21:57, skipping insertion in model container [2024-01-27 15:21:57,307 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:21:57" (3/3) ... [2024-01-27 15:21:57,308 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-exp-term-subst.wvr.c [2024-01-27 15:21:57,315 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 15:21:57,322 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 15:21:57,323 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-27 15:21:57,323 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 15:21:57,362 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-01-27 15:21:57,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 31 places, 21 transitions, 63 flow [2024-01-27 15:21:57,415 INFO L124 PetriNetUnfolderBase]: 0/18 cut-off events. [2024-01-27 15:21:57,417 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-27 15:21:57,418 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 15:21:57,418 INFO L82 GeneralOperation]: Start removeDead. Operand has 31 places, 21 transitions, 63 flow [2024-01-27 15:21:57,420 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 27 places, 17 transitions, 52 flow [2024-01-27 15:21:57,435 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 15:21:57,442 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;@2ce3228, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 15:21:57,442 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-01-27 15:21:57,458 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 15:21:57,458 INFO L124 PetriNetUnfolderBase]: 0/16 cut-off events. [2024-01-27 15:21:57,458 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-27 15:21:57,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:21:57,459 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 15:21:57,459 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 15:21:57,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:21:57,467 INFO L85 PathProgramCache]: Analyzing trace with hash 55663386, now seen corresponding path program 1 times [2024-01-27 15:21:57,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:21:57,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450596698] [2024-01-27 15:21:57,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:21:57,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:21:57,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:22:00,226 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 15:22:00,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:22:00,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450596698] [2024-01-27 15:22:00,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450596698] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:22:00,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:22:00,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:22:00,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461803493] [2024-01-27 15:22:00,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:22:00,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:22:00,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:22:00,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:22:00,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:22:00,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 21 [2024-01-27 15:22:00,261 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 15:22:00,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:22:00,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 21 [2024-01-27 15:22:00,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:22:00,755 INFO L124 PetriNetUnfolderBase]: 38/102 cut-off events. [2024-01-27 15:22:00,755 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-01-27 15:22:00,757 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 284 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 15:22:00,759 INFO L140 encePairwiseOnDemand]: 16/21 looper letters, 32 selfloop transitions, 6 changer transitions 7/46 dead transitions. [2024-01-27 15:22:00,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 46 transitions, 230 flow [2024-01-27 15:22:00,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 15:22:00,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 15:22:00,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 70 transitions. [2024-01-27 15:22:00,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-01-27 15:22:00,771 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 52 flow. Second operand 6 states and 70 transitions. [2024-01-27 15:22:00,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 46 transitions, 230 flow [2024-01-27 15:22:00,775 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 15:22:00,777 INFO L231 Difference]: Finished difference. Result has 29 places, 21 transitions, 73 flow [2024-01-27 15:22:00,778 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 15:22:00,781 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2024-01-27 15:22:00,781 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 21 transitions, 73 flow [2024-01-27 15:22:00,782 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 15:22:00,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:22:00,782 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 15:22:00,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 15:22:00,783 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 15:22:00,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:22:00,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1406260584, now seen corresponding path program 2 times [2024-01-27 15:22:00,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:22:00,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242311169] [2024-01-27 15:22:00,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:22:00,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:22:00,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:22:02,013 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 15:22:02,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:22:02,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242311169] [2024-01-27 15:22:02,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242311169] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:22:02,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:22:02,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:22:02,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777047766] [2024-01-27 15:22:02,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:22:02,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:22:02,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:22:02,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:22:02,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:22:02,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 21 [2024-01-27 15:22:02,019 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 15:22:02,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:22:02,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 21 [2024-01-27 15:22:02,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:22:02,258 INFO L124 PetriNetUnfolderBase]: 38/119 cut-off events. [2024-01-27 15:22:02,259 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2024-01-27 15:22:02,260 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 411 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 15:22:02,262 INFO L140 encePairwiseOnDemand]: 16/21 looper letters, 30 selfloop transitions, 7 changer transitions 9/47 dead transitions. [2024-01-27 15:22:02,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 47 transitions, 237 flow [2024-01-27 15:22:02,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 15:22:02,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 15:22:02,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 70 transitions. [2024-01-27 15:22:02,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-01-27 15:22:02,266 INFO L175 Difference]: Start difference. First operand has 29 places, 21 transitions, 73 flow. Second operand 6 states and 70 transitions. [2024-01-27 15:22:02,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 47 transitions, 237 flow [2024-01-27 15:22:02,270 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 15:22:02,272 INFO L231 Difference]: Finished difference. Result has 35 places, 22 transitions, 102 flow [2024-01-27 15:22:02,272 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 15:22:02,273 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 8 predicate places. [2024-01-27 15:22:02,273 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 22 transitions, 102 flow [2024-01-27 15:22:02,274 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 15:22:02,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:22:02,276 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 15:22:02,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 15:22:02,276 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 15:22:02,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:22:02,277 INFO L85 PathProgramCache]: Analyzing trace with hash -634487200, now seen corresponding path program 3 times [2024-01-27 15:22:02,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:22:02,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422953166] [2024-01-27 15:22:02,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:22:02,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:22:02,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:22:03,699 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 15:22:03,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:22:03,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422953166] [2024-01-27 15:22:03,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422953166] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:22:03,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:22:03,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:22:03,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763558028] [2024-01-27 15:22:03,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:22:03,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:22:03,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:22:03,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:22:03,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:22:03,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 21 [2024-01-27 15:22:03,703 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 15:22:03,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:22:03,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 21 [2024-01-27 15:22:03,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:22:03,889 INFO L124 PetriNetUnfolderBase]: 33/105 cut-off events. [2024-01-27 15:22:03,889 INFO L125 PetriNetUnfolderBase]: For 160/160 co-relation queries the response was YES. [2024-01-27 15:22:03,891 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 336 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 15:22:03,893 INFO L140 encePairwiseOnDemand]: 16/21 looper letters, 27 selfloop transitions, 6 changer transitions 11/45 dead transitions. [2024-01-27 15:22:03,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 45 transitions, 259 flow [2024-01-27 15:22:03,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 15:22:03,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 15:22:03,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 68 transitions. [2024-01-27 15:22:03,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5396825396825397 [2024-01-27 15:22:03,896 INFO L175 Difference]: Start difference. First operand has 35 places, 22 transitions, 102 flow. Second operand 6 states and 68 transitions. [2024-01-27 15:22:03,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 45 transitions, 259 flow [2024-01-27 15:22:03,898 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 15:22:03,899 INFO L231 Difference]: Finished difference. Result has 39 places, 21 transitions, 102 flow [2024-01-27 15:22:03,899 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 15:22:03,900 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 12 predicate places. [2024-01-27 15:22:03,900 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 21 transitions, 102 flow [2024-01-27 15:22:03,901 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 15:22:03,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:22:03,901 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 15:22:03,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-27 15:22:03,902 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 15:22:03,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:22:03,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1277765754, now seen corresponding path program 4 times [2024-01-27 15:22:03,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:22:03,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737471319] [2024-01-27 15:22:03,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:22:03,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:22:03,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:22:05,258 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 15:22:05,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:22:05,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737471319] [2024-01-27 15:22:05,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737471319] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:22:05,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:22:05,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:22:05,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267942798] [2024-01-27 15:22:05,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:22:05,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:22:05,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:22:05,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:22:05,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:22:05,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 21 [2024-01-27 15:22:05,266 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 15:22:05,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:22:05,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 21 [2024-01-27 15:22:05,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:22:05,520 INFO L124 PetriNetUnfolderBase]: 17/60 cut-off events. [2024-01-27 15:22:05,521 INFO L125 PetriNetUnfolderBase]: For 94/94 co-relation queries the response was YES. [2024-01-27 15:22:05,521 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 136 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 15:22:05,522 INFO L140 encePairwiseOnDemand]: 16/21 looper letters, 18 selfloop transitions, 5 changer transitions 13/37 dead transitions. [2024-01-27 15:22:05,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 37 transitions, 221 flow [2024-01-27 15:22:05,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 15:22:05,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 15:22:05,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 60 transitions. [2024-01-27 15:22:05,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-01-27 15:22:05,524 INFO L175 Difference]: Start difference. First operand has 39 places, 21 transitions, 102 flow. Second operand 6 states and 60 transitions. [2024-01-27 15:22:05,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 37 transitions, 221 flow [2024-01-27 15:22:05,528 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 15:22:05,529 INFO L231 Difference]: Finished difference. Result has 38 places, 19 transitions, 83 flow [2024-01-27 15:22:05,529 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 15:22:05,530 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2024-01-27 15:22:05,530 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 19 transitions, 83 flow [2024-01-27 15:22:05,531 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 15:22:05,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:22:05,531 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 15:22:05,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-27 15:22:05,531 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 15:22:05,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:22:05,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1685798856, now seen corresponding path program 5 times [2024-01-27 15:22:05,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:22:05,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675873577] [2024-01-27 15:22:05,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:22:05,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:22:05,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:22:07,141 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 15:22:07,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:22:07,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675873577] [2024-01-27 15:22:07,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675873577] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:22:07,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:22:07,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:22:07,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581701650] [2024-01-27 15:22:07,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:22:07,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:22:07,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:22:07,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:22:07,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:22:07,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 21 [2024-01-27 15:22:07,144 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 15:22:07,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:22:07,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 21 [2024-01-27 15:22:07,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:22:07,587 INFO L124 PetriNetUnfolderBase]: 8/41 cut-off events. [2024-01-27 15:22:07,588 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2024-01-27 15:22:07,588 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 15:22:07,589 INFO L140 encePairwiseOnDemand]: 16/21 looper letters, 15 selfloop transitions, 3 changer transitions 12/31 dead transitions. [2024-01-27 15:22:07,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 31 transitions, 180 flow [2024-01-27 15:22:07,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 15:22:07,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 15:22:07,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 55 transitions. [2024-01-27 15:22:07,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4365079365079365 [2024-01-27 15:22:07,598 INFO L175 Difference]: Start difference. First operand has 38 places, 19 transitions, 83 flow. Second operand 6 states and 55 transitions. [2024-01-27 15:22:07,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 31 transitions, 180 flow [2024-01-27 15:22:07,599 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 15:22:07,599 INFO L231 Difference]: Finished difference. Result has 34 places, 17 transitions, 58 flow [2024-01-27 15:22:07,599 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 15:22:07,600 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2024-01-27 15:22:07,600 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 17 transitions, 58 flow [2024-01-27 15:22:07,600 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 15:22:07,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:22:07,600 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 15:22:07,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-27 15:22:07,601 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 15:22:07,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:22:07,601 INFO L85 PathProgramCache]: Analyzing trace with hash -74857898, now seen corresponding path program 6 times [2024-01-27 15:22:07,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:22:07,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987589900] [2024-01-27 15:22:07,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:22:07,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:22:07,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:22:08,570 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 15:22:08,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:22:08,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987589900] [2024-01-27 15:22:08,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987589900] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:22:08,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:22:08,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:22:08,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103853302] [2024-01-27 15:22:08,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:22:08,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:22:08,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:22:08,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:22:08,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:22:08,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 21 [2024-01-27 15:22:08,573 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 15:22:08,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:22:08,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 21 [2024-01-27 15:22:08,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:22:08,769 INFO L124 PetriNetUnfolderBase]: 3/21 cut-off events. [2024-01-27 15:22:08,770 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-01-27 15:22:08,770 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 15:22:08,770 INFO L140 encePairwiseOnDemand]: 16/21 looper letters, 0 selfloop transitions, 0 changer transitions 18/18 dead transitions. [2024-01-27 15:22:08,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 18 transitions, 94 flow [2024-01-27 15:22:08,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 15:22:08,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 15:22:08,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 43 transitions. [2024-01-27 15:22:08,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3412698412698413 [2024-01-27 15:22:08,771 INFO L175 Difference]: Start difference. First operand has 34 places, 17 transitions, 58 flow. Second operand 6 states and 43 transitions. [2024-01-27 15:22:08,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 18 transitions, 94 flow [2024-01-27 15:22:08,771 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 15:22:08,772 INFO L231 Difference]: Finished difference. Result has 29 places, 0 transitions, 0 flow [2024-01-27 15:22:08,772 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 15:22:08,772 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2024-01-27 15:22:08,772 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 0 transitions, 0 flow [2024-01-27 15:22:08,772 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 15:22:08,774 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-01-27 15:22:08,774 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2024-01-27 15:22:08,775 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-01-27 15:22:08,775 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-01-27 15:22:08,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-27 15:22:08,775 INFO L445 BasicCegarLoop]: Path program histogram: [6] [2024-01-27 15:22:08,777 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-27 15:22:08,777 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-27 15:22:08,784 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 03:22:08 BasicIcfg [2024-01-27 15:22:08,784 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-27 15:22:08,785 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-01-27 15:22:08,785 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-01-27 15:22:08,785 INFO L274 PluginConnector]: Witness Printer initialized [2024-01-27 15:22:08,785 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:21:57" (3/4) ... [2024-01-27 15:22:08,786 INFO L137 WitnessPrinter]: Generating witness for correct program [2024-01-27 15:22:08,788 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-01-27 15:22:08,789 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-01-27 15:22:08,789 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2024-01-27 15:22:08,793 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 80 nodes and edges [2024-01-27 15:22:08,793 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2024-01-27 15:22:08,794 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-01-27 15:22:08,794 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-01-27 15:22:08,861 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-01-27 15:22:08,862 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-01-27 15:22:08,862 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-01-27 15:22:08,862 INFO L158 Benchmark]: Toolchain (without parser) took 12724.68ms. Allocated memory was 167.8MB in the beginning and 660.6MB in the end (delta: 492.8MB). Free memory was 99.7MB in the beginning and 507.2MB in the end (delta: -407.6MB). Peak memory consumption was 88.4MB. Max. memory is 16.1GB. [2024-01-27 15:22:08,862 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 109.1MB. Free memory is still 71.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-27 15:22:08,863 INFO L158 Benchmark]: CACSL2BoogieTranslator took 290.30ms. Allocated memory is still 167.8MB. Free memory was 99.4MB in the beginning and 138.6MB in the end (delta: -39.2MB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. [2024-01-27 15:22:08,863 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.07ms. Allocated memory is still 167.8MB. Free memory was 138.6MB in the beginning and 136.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-27 15:22:08,863 INFO L158 Benchmark]: Boogie Preprocessor took 38.90ms. Allocated memory is still 167.8MB. Free memory was 136.5MB in the beginning and 133.8MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-27 15:22:08,863 INFO L158 Benchmark]: RCFGBuilder took 786.51ms. Allocated memory is still 167.8MB. Free memory was 133.8MB in the beginning and 135.0MB in the end (delta: -1.2MB). Peak memory consumption was 91.4MB. Max. memory is 16.1GB. [2024-01-27 15:22:08,864 INFO L158 Benchmark]: TraceAbstraction took 11481.29ms. Allocated memory was 167.8MB in the beginning and 660.6MB in the end (delta: 492.8MB). Free memory was 135.0MB in the beginning and 512.5MB in the end (delta: -377.5MB). Peak memory consumption was 114.2MB. Max. memory is 16.1GB. [2024-01-27 15:22:08,864 INFO L158 Benchmark]: Witness Printer took 77.25ms. Allocated memory is still 660.6MB. Free memory was 512.5MB in the beginning and 507.2MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-01-27 15:22:08,865 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 109.1MB. Free memory is still 71.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 290.30ms. Allocated memory is still 167.8MB. Free memory was 99.4MB in the beginning and 138.6MB in the end (delta: -39.2MB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.07ms. Allocated memory is still 167.8MB. Free memory was 138.6MB in the beginning and 136.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.90ms. Allocated memory is still 167.8MB. Free memory was 136.5MB in the beginning and 133.8MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 786.51ms. Allocated memory is still 167.8MB. Free memory was 133.8MB in the beginning and 135.0MB in the end (delta: -1.2MB). Peak memory consumption was 91.4MB. Max. memory is 16.1GB. * TraceAbstraction took 11481.29ms. Allocated memory was 167.8MB in the beginning and 660.6MB in the end (delta: 492.8MB). Free memory was 135.0MB in the beginning and 512.5MB in the end (delta: -377.5MB). Peak memory consumption was 114.2MB. Max. memory is 16.1GB. * Witness Printer took 77.25ms. Allocated memory is still 660.6MB. Free memory was 512.5MB in the beginning and 507.2MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 81]: 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: 11.4s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, 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, 0.4s 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, 1.6s 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, 8.9s InterpolantComputationTime, 102 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 3768 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 15:22:08,894 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