./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-ext/18_read_write_lock.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-05-07_14-17-48.files/mutex-meet/18_read_write_lock.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b44c8288 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/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-ext/18_read_write_lock.i ./goblint.2024-05-07_14-17-48.files/mutex-meet/18_read_write_lock.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.witness-ghost-b44c828-m [2024-05-12 10:34:10,433 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 10:34:10,469 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 10:34:10,472 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 10:34:10,472 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 10:34:10,486 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 10:34:10,488 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 10:34:10,489 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 10:34:10,489 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 10:34:10,490 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 10:34:10,490 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 10:34:10,490 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 10:34:10,491 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 10:34:10,492 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 10:34:10,493 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 10:34:10,493 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 10:34:10,494 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 10:34:10,496 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 10:34:10,496 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 10:34:10,497 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 10:34:10,497 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 10:34:10,498 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 10:34:10,498 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 10:34:10,498 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 10:34:10,498 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 10:34:10,498 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 10:34:10,499 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 10:34:10,499 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 10:34:10,499 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 10:34:10,499 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 10:34:10,500 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 10:34:10,500 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 10:34:10,500 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 10:34:10,501 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 10:34:10,501 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 10:34:10,501 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 10:34:10,501 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 10:34:10,501 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 10:34:10,501 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 10:34:10,502 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 10:34:10,502 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 10:34:10,502 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 10:34:10,502 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 10:34:10,502 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 10:34:10,695 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 10:34:10,716 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 10:34:10,718 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 10:34:10,719 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 10:34:10,719 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 10:34:10,720 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/mutex-meet/18_read_write_lock.yml/witness.yml [2024-05-12 10:34:10,828 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 10:34:10,831 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 10:34:10,831 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/18_read_write_lock.i [2024-05-12 10:34:11,910 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 10:34:12,077 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 10:34:12,077 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/18_read_write_lock.i [2024-05-12 10:34:12,086 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02e1cfab3/4a551bc38a834736ba0193c388ffc46f/FLAG7a3bd5a99 [2024-05-12 10:34:12,103 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02e1cfab3/4a551bc38a834736ba0193c388ffc46f [2024-05-12 10:34:12,104 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 10:34:12,105 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 10:34:12,107 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 10:34:12,107 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 10:34:12,111 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 10:34:12,111 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 10:34:10" (1/2) ... [2024-05-12 10:34:12,112 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e7325f1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 10:34:12, skipping insertion in model container [2024-05-12 10:34:12,112 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 10:34:10" (1/2) ... [2024-05-12 10:34:12,115 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5da96a26 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 10:34:12, skipping insertion in model container [2024-05-12 10:34:12,115 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 10:34:12" (2/2) ... [2024-05-12 10:34:12,116 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e7325f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:34:12, skipping insertion in model container [2024-05-12 10:34:12,116 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 10:34:12" (2/2) ... [2024-05-12 10:34:12,117 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 10:34:12,139 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 10:34:12,139 INFO L97 edCorrectnessWitness]: Location invariant before [L751-L751] (((! multithreaded || ((((0 <= x && x <= 3) && x <= 127) && x % 3 == 0) && (x == 0 || x == 3))) && (! multithreaded || ((((0 <= y && y <= 3) && y <= 127) && y % 3 == 0) && (y == 0 || y == 3)))) && (! multithreaded || ((((((0 <= w && 0 <= y) && w <= 1) && y <= 127) && y % 3 == 0) && (w == 0 || w == 1)) && (y == 0 || y == 3)))) && (! multithreaded || ((0 <= w && w <= 1) && (w == 0 || w == 1))) [2024-05-12 10:34:12,140 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 10:34:12,140 INFO L106 edCorrectnessWitness]: ghost_update [L750-L750] multithreaded = 1; [2024-05-12 10:34:12,175 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 10:34:12,398 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/18_read_write_lock.i[31161,31174] [2024-05-12 10:34:12,404 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 10:34:12,412 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-05-12 10:34:12,486 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/18_read_write_lock.i[31161,31174] Start Parsing Local Start Parsing Local [2024-05-12 10:34:12,504 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 10:34:12,558 INFO L206 MainTranslator]: Completed translation [2024-05-12 10:34:12,558 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:34:12 WrapperNode [2024-05-12 10:34:12,558 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 10:34:12,559 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 10:34:12,559 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 10:34:12,560 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 10:34:12,565 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:34:12" (1/1) ... [2024-05-12 10:34:12,574 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:34:12" (1/1) ... [2024-05-12 10:34:12,589 INFO L138 Inliner]: procedures = 173, calls = 31, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 81 [2024-05-12 10:34:12,590 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 10:34:12,590 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 10:34:12,591 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 10:34:12,591 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 10:34:12,598 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:34:12" (1/1) ... [2024-05-12 10:34:12,598 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:34:12" (1/1) ... [2024-05-12 10:34:12,600 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:34:12" (1/1) ... [2024-05-12 10:34:12,609 INFO L175 MemorySlicer]: Split 3 memory accesses to 2 slices as follows [2, 1]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-05-12 10:34:12,610 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:34:12" (1/1) ... [2024-05-12 10:34:12,610 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:34:12" (1/1) ... [2024-05-12 10:34:12,613 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:34:12" (1/1) ... [2024-05-12 10:34:12,615 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:34:12" (1/1) ... [2024-05-12 10:34:12,616 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:34:12" (1/1) ... [2024-05-12 10:34:12,616 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:34:12" (1/1) ... [2024-05-12 10:34:12,619 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 10:34:12,620 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 10:34:12,620 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 10:34:12,620 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 10:34:12,621 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:34:12" (1/1) ... [2024-05-12 10:34:12,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 10:34:12,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 10:34:12,643 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) [2024-05-12 10:34:12,648 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 [2024-05-12 10:34:12,668 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-05-12 10:34:12,668 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-05-12 10:34:12,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 10:34:12,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 10:34:12,668 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-05-12 10:34:12,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 10:34:12,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 10:34:12,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 10:34:12,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 10:34:12,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 10:34:12,669 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-05-12 10:34:12,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 10:34:12,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 10:34:12,670 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-05-12 10:34:12,764 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 10:34:12,766 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 10:34:12,951 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 10:34:12,951 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 10:34:13,044 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 10:34:13,044 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-05-12 10:34:13,045 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 10:34:13 BoogieIcfgContainer [2024-05-12 10:34:13,045 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 10:34:13,048 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 10:34:13,048 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 10:34:13,050 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 10:34:13,051 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 10:34:10" (1/4) ... [2024-05-12 10:34:13,052 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35bb03f6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 10:34:13, skipping insertion in model container [2024-05-12 10:34:13,052 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 10:34:12" (2/4) ... [2024-05-12 10:34:13,053 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35bb03f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 10:34:13, skipping insertion in model container [2024-05-12 10:34:13,053 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:34:12" (3/4) ... [2024-05-12 10:34:13,054 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35bb03f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 10:34:13, skipping insertion in model container [2024-05-12 10:34:13,054 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 10:34:13" (4/4) ... [2024-05-12 10:34:13,055 INFO L112 eAbstractionObserver]: Analyzing ICFG 18_read_write_lock.i [2024-05-12 10:34:13,069 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 10:34:13,070 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-05-12 10:34:13,070 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 10:34:13,103 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-05-12 10:34:13,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 25 transitions, 54 flow [2024-05-12 10:34:13,164 INFO L124 PetriNetUnfolderBase]: 1/24 cut-off events. [2024-05-12 10:34:13,165 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 10:34:13,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28 conditions, 24 events. 1/24 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 17 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 20. Up to 2 conditions per place. [2024-05-12 10:34:13,167 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 25 transitions, 54 flow [2024-05-12 10:34:13,172 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 23 places, 19 transitions, 41 flow [2024-05-12 10:34:13,186 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 10:34:13,192 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=false, 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;@46410eec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 10:34:13,192 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-05-12 10:34:13,197 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 10:34:13,197 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-05-12 10:34:13,197 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 10:34:13,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:34:13,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 10:34:13,198 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-05-12 10:34:13,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:34:13,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1935921400, now seen corresponding path program 1 times [2024-05-12 10:34:13,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:34:13,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074227591] [2024-05-12 10:34:13,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:34:13,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:34:13,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:34:13,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:34:13,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:34:13,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074227591] [2024-05-12 10:34:13,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074227591] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:34:13,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:34:13,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 10:34:13,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464818333] [2024-05-12 10:34:13,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:34:13,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 10:34:13,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:34:13,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 10:34:13,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 10:34:13,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 25 [2024-05-12 10:34:13,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 41 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2024-05-12 10:34:13,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:34:13,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 25 [2024-05-12 10:34:13,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:34:13,842 INFO L124 PetriNetUnfolderBase]: 14/62 cut-off events. [2024-05-12 10:34:13,842 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 10:34:13,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 62 events. 14/62 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 161 event pairs, 4 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 94. Up to 34 conditions per place. [2024-05-12 10:34:13,844 INFO L140 encePairwiseOnDemand]: 21/25 looper letters, 14 selfloop transitions, 3 changer transitions 0/24 dead transitions. [2024-05-12 10:34:13,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 24 transitions, 85 flow [2024-05-12 10:34:13,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 10:34:13,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 10:34:13,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 51 transitions. [2024-05-12 10:34:13,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.68 [2024-05-12 10:34:13,853 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 41 flow. Second operand 3 states and 51 transitions. [2024-05-12 10:34:13,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 24 transitions, 85 flow [2024-05-12 10:34:13,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 24 transitions, 84 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 10:34:13,857 INFO L231 Difference]: Finished difference. Result has 25 places, 21 transitions, 59 flow [2024-05-12 10:34:13,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=25, PETRI_TRANSITIONS=21} [2024-05-12 10:34:13,861 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 2 predicate places. [2024-05-12 10:34:13,861 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 21 transitions, 59 flow [2024-05-12 10:34:13,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2024-05-12 10:34:13,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:34:13,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:34:13,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 10:34:13,862 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-05-12 10:34:13,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:34:13,863 INFO L85 PathProgramCache]: Analyzing trace with hash 699645655, now seen corresponding path program 1 times [2024-05-12 10:34:13,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:34:13,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900482191] [2024-05-12 10:34:13,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:34:13,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:34:13,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:34:14,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:34:14,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:34:14,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900482191] [2024-05-12 10:34:14,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900482191] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:34:14,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:34:14,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 10:34:14,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115134624] [2024-05-12 10:34:14,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:34:14,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 10:34:14,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:34:14,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 10:34:14,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-05-12 10:34:14,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 25 [2024-05-12 10:34:14,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 21 transitions, 59 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:34:14,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:34:14,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 25 [2024-05-12 10:34:14,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:34:14,198 INFO L124 PetriNetUnfolderBase]: 17/70 cut-off events. [2024-05-12 10:34:14,198 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-05-12 10:34:14,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 70 events. 17/70 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 187 event pairs, 4 based on Foata normal form. 2/71 useless extension candidates. Maximal degree in co-relation 128. Up to 36 conditions per place. [2024-05-12 10:34:14,200 INFO L140 encePairwiseOnDemand]: 19/25 looper letters, 17 selfloop transitions, 5 changer transitions 0/28 dead transitions. [2024-05-12 10:34:14,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 28 transitions, 119 flow [2024-05-12 10:34:14,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 10:34:14,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 10:34:14,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 64 transitions. [2024-05-12 10:34:14,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.64 [2024-05-12 10:34:14,202 INFO L175 Difference]: Start difference. First operand has 25 places, 21 transitions, 59 flow. Second operand 4 states and 64 transitions. [2024-05-12 10:34:14,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 28 transitions, 119 flow [2024-05-12 10:34:14,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 28 transitions, 116 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 10:34:14,204 INFO L231 Difference]: Finished difference. Result has 28 places, 23 transitions, 83 flow [2024-05-12 10:34:14,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=83, PETRI_PLACES=28, PETRI_TRANSITIONS=23} [2024-05-12 10:34:14,205 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 5 predicate places. [2024-05-12 10:34:14,205 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 23 transitions, 83 flow [2024-05-12 10:34:14,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:34:14,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:34:14,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:34:14,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-12 10:34:14,208 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-05-12 10:34:14,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:34:14,209 INFO L85 PathProgramCache]: Analyzing trace with hash 214179493, now seen corresponding path program 1 times [2024-05-12 10:34:14,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:34:14,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476326036] [2024-05-12 10:34:14,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:34:14,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:34:14,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:34:14,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:34:14,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:34:14,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476326036] [2024-05-12 10:34:14,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476326036] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:34:14,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:34:14,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 10:34:14,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833243341] [2024-05-12 10:34:14,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:34:14,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 10:34:14,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:34:14,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 10:34:14,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-05-12 10:34:14,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 25 [2024-05-12 10:34:14,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 23 transitions, 83 flow. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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) [2024-05-12 10:34:14,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:34:14,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 25 [2024-05-12 10:34:14,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:34:14,429 INFO L124 PetriNetUnfolderBase]: 15/68 cut-off events. [2024-05-12 10:34:14,430 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2024-05-12 10:34:14,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 68 events. 15/68 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 183 event pairs, 7 based on Foata normal form. 2/69 useless extension candidates. Maximal degree in co-relation 141. Up to 24 conditions per place. [2024-05-12 10:34:14,431 INFO L140 encePairwiseOnDemand]: 18/25 looper letters, 16 selfloop transitions, 8 changer transitions 0/30 dead transitions. [2024-05-12 10:34:14,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 30 transitions, 149 flow [2024-05-12 10:34:14,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 10:34:14,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 10:34:14,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 75 transitions. [2024-05-12 10:34:14,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-05-12 10:34:14,435 INFO L175 Difference]: Start difference. First operand has 28 places, 23 transitions, 83 flow. Second operand 5 states and 75 transitions. [2024-05-12 10:34:14,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 30 transitions, 149 flow [2024-05-12 10:34:14,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 30 transitions, 140 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-05-12 10:34:14,437 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 107 flow [2024-05-12 10:34:14,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=107, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2024-05-12 10:34:14,439 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 8 predicate places. [2024-05-12 10:34:14,439 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 107 flow [2024-05-12 10:34:14,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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) [2024-05-12 10:34:14,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:34:14,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:34:14,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 10:34:14,440 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-05-12 10:34:14,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:34:14,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1920786310, now seen corresponding path program 1 times [2024-05-12 10:34:14,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:34:14,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773083765] [2024-05-12 10:34:14,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:34:14,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:34:14,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:34:14,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:34:14,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:34:14,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773083765] [2024-05-12 10:34:14,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773083765] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:34:14,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:34:14,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 10:34:14,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693513518] [2024-05-12 10:34:14,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:34:14,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 10:34:14,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:34:14,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 10:34:14,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-05-12 10:34:14,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 25 [2024-05-12 10:34:14,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 107 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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) [2024-05-12 10:34:14,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:34:14,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 25 [2024-05-12 10:34:14,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:34:14,606 INFO L124 PetriNetUnfolderBase]: 14/64 cut-off events. [2024-05-12 10:34:14,606 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2024-05-12 10:34:14,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 64 events. 14/64 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 166 event pairs, 2 based on Foata normal form. 2/65 useless extension candidates. Maximal degree in co-relation 149. Up to 14 conditions per place. [2024-05-12 10:34:14,607 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 17 selfloop transitions, 7 changer transitions 0/30 dead transitions. [2024-05-12 10:34:14,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 30 transitions, 163 flow [2024-05-12 10:34:14,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 10:34:14,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 10:34:14,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 74 transitions. [2024-05-12 10:34:14,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.592 [2024-05-12 10:34:14,608 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 107 flow. Second operand 5 states and 74 transitions. [2024-05-12 10:34:14,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 30 transitions, 163 flow [2024-05-12 10:34:14,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 30 transitions, 151 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-05-12 10:34:14,610 INFO L231 Difference]: Finished difference. Result has 32 places, 24 transitions, 101 flow [2024-05-12 10:34:14,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=101, PETRI_PLACES=32, PETRI_TRANSITIONS=24} [2024-05-12 10:34:14,611 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 9 predicate places. [2024-05-12 10:34:14,611 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 24 transitions, 101 flow [2024-05-12 10:34:14,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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) [2024-05-12 10:34:14,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:34:14,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:34:14,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-05-12 10:34:14,612 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-05-12 10:34:14,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:34:14,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1010408869, now seen corresponding path program 1 times [2024-05-12 10:34:14,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:34:14,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053545716] [2024-05-12 10:34:14,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:34:14,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:34:14,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:34:14,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:34:14,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:34:14,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053545716] [2024-05-12 10:34:14,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053545716] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:34:14,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:34:14,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:34:14,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110065424] [2024-05-12 10:34:14,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:34:14,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 10:34:14,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:34:14,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 10:34:14,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-05-12 10:34:14,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 25 [2024-05-12 10:34:14,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 24 transitions, 101 flow. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 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) [2024-05-12 10:34:14,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:34:14,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 25 [2024-05-12 10:34:14,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:34:14,734 INFO L124 PetriNetUnfolderBase]: 25/89 cut-off events. [2024-05-12 10:34:14,735 INFO L125 PetriNetUnfolderBase]: For 91/91 co-relation queries the response was YES. [2024-05-12 10:34:14,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 89 events. 25/89 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 277 event pairs, 6 based on Foata normal form. 7/95 useless extension candidates. Maximal degree in co-relation 233. Up to 35 conditions per place. [2024-05-12 10:34:14,735 INFO L140 encePairwiseOnDemand]: 18/25 looper letters, 18 selfloop transitions, 6 changer transitions 15/43 dead transitions. [2024-05-12 10:34:14,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 43 transitions, 251 flow [2024-05-12 10:34:14,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:34:14,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:34:14,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-05-12 10:34:14,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46 [2024-05-12 10:34:14,737 INFO L175 Difference]: Start difference. First operand has 32 places, 24 transitions, 101 flow. Second operand 8 states and 92 transitions. [2024-05-12 10:34:14,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 43 transitions, 251 flow [2024-05-12 10:34:14,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 43 transitions, 223 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-05-12 10:34:14,739 INFO L231 Difference]: Finished difference. Result has 40 places, 26 transitions, 118 flow [2024-05-12 10:34:14,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=118, PETRI_PLACES=40, PETRI_TRANSITIONS=26} [2024-05-12 10:34:14,739 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 17 predicate places. [2024-05-12 10:34:14,739 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 26 transitions, 118 flow [2024-05-12 10:34:14,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 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) [2024-05-12 10:34:14,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:34:14,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:34:14,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-05-12 10:34:14,740 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-05-12 10:34:14,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:34:14,741 INFO L85 PathProgramCache]: Analyzing trace with hash 362801386, now seen corresponding path program 1 times [2024-05-12 10:34:14,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:34:14,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541022530] [2024-05-12 10:34:14,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:34:14,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:34:14,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:34:14,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:34:14,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:34:14,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541022530] [2024-05-12 10:34:14,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541022530] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:34:14,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:34:14,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 10:34:14,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146011345] [2024-05-12 10:34:14,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:34:14,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 10:34:14,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:34:14,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 10:34:14,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-05-12 10:34:14,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 25 [2024-05-12 10:34:14,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 26 transitions, 118 flow. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2024-05-12 10:34:14,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:34:14,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 25 [2024-05-12 10:34:14,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:34:14,786 INFO L124 PetriNetUnfolderBase]: 2/16 cut-off events. [2024-05-12 10:34:14,786 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-05-12 10:34:14,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 16 events. 2/16 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 16 event pairs, 2 based on Foata normal form. 2/17 useless extension candidates. Maximal degree in co-relation 44. Up to 11 conditions per place. [2024-05-12 10:34:14,786 INFO L140 encePairwiseOnDemand]: 22/25 looper letters, 0 selfloop transitions, 0 changer transitions 12/12 dead transitions. [2024-05-12 10:34:14,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 12 transitions, 63 flow [2024-05-12 10:34:14,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 10:34:14,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 10:34:14,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 61 transitions. [2024-05-12 10:34:14,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.61 [2024-05-12 10:34:14,787 INFO L175 Difference]: Start difference. First operand has 40 places, 26 transitions, 118 flow. Second operand 4 states and 61 transitions. [2024-05-12 10:34:14,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 12 transitions, 63 flow [2024-05-12 10:34:14,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 12 transitions, 50 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-05-12 10:34:14,788 INFO L231 Difference]: Finished difference. Result has 25 places, 0 transitions, 0 flow [2024-05-12 10:34:14,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=25, PETRI_TRANSITIONS=0} [2024-05-12 10:34:14,789 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 2 predicate places. [2024-05-12 10:34:14,789 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 0 transitions, 0 flow [2024-05-12 10:34:14,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2024-05-12 10:34:14,791 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 3 remaining) [2024-05-12 10:34:14,791 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2024-05-12 10:34:14,791 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2024-05-12 10:34:14,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-05-12 10:34:14,792 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-05-12 10:34:14,794 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-05-12 10:34:14,794 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-05-12 10:34:14,797 INFO L507 ceAbstractionStarter]: Automizer considered 1 witness invariants [2024-05-12 10:34:14,797 INFO L508 ceAbstractionStarter]: WitnessConsidered=1 [2024-05-12 10:34:14,797 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.05 10:34:14 BasicIcfg [2024-05-12 10:34:14,798 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-05-12 10:34:14,798 INFO L158 Benchmark]: Toolchain (without parser) took 2693.00ms. Allocated memory was 155.2MB in the beginning and 207.6MB in the end (delta: 52.4MB). Free memory was 80.5MB in the beginning and 93.8MB in the end (delta: -13.3MB). Peak memory consumption was 40.6MB. Max. memory is 16.1GB. [2024-05-12 10:34:14,798 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 119.5MB. Free memory is still 79.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-05-12 10:34:14,798 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 155.2MB. Free memory is still 127.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-05-12 10:34:14,799 INFO L158 Benchmark]: CACSL2BoogieTranslator took 451.87ms. Allocated memory is still 155.2MB. Free memory was 80.5MB in the beginning and 123.5MB in the end (delta: -43.0MB). Peak memory consumption was 31.9MB. Max. memory is 16.1GB. [2024-05-12 10:34:14,799 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.71ms. Allocated memory is still 155.2MB. Free memory was 123.5MB in the beginning and 121.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-05-12 10:34:14,799 INFO L158 Benchmark]: Boogie Preprocessor took 29.02ms. Allocated memory is still 155.2MB. Free memory was 121.4MB in the beginning and 119.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-05-12 10:34:14,799 INFO L158 Benchmark]: RCFGBuilder took 425.50ms. Allocated memory is still 155.2MB. Free memory was 119.3MB in the beginning and 96.2MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-05-12 10:34:14,800 INFO L158 Benchmark]: TraceAbstraction took 1749.95ms. Allocated memory was 155.2MB in the beginning and 207.6MB in the end (delta: 52.4MB). Free memory was 95.5MB in the beginning and 93.8MB in the end (delta: 1.6MB). Peak memory consumption was 52.7MB. Max. memory is 16.1GB. [2024-05-12 10:34:14,801 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.15ms. Allocated memory is still 119.5MB. Free memory is still 79.4MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.17ms. Allocated memory is still 155.2MB. Free memory is still 127.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 451.87ms. Allocated memory is still 155.2MB. Free memory was 80.5MB in the beginning and 123.5MB in the end (delta: -43.0MB). Peak memory consumption was 31.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.71ms. Allocated memory is still 155.2MB. Free memory was 123.5MB in the beginning and 121.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.02ms. Allocated memory is still 155.2MB. Free memory was 121.4MB in the beginning and 119.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 425.50ms. Allocated memory is still 155.2MB. Free memory was 119.3MB in the beginning and 96.2MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 1749.95ms. Allocated memory was 155.2MB in the beginning and 207.6MB in the end (delta: 52.4MB). Free memory was 95.5MB in the beginning and 93.8MB in the end (delta: 1.6MB). Peak memory consumption was 52.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 751]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 738]: 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 3 procedures, 32 locations, 3 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: 1.7s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 130 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 85 mSDsluCounter, 39 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 25 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 320 IncrementalHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 14 mSDtfsCounter, 320 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=118occurred in iteration=5, InterpolantAutomatonStates: 29, 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, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 62 NumberOfCodeBlocks, 62 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 56 ConstructedInterpolants, 0 QuantifiedInterpolants, 233 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-05-12 10:34:14,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE