./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-lit/qw2004-2b.i --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/pthread-lit/qw2004-2b.i -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 f17f6182d2330561fe6717b6a061d0dded698483f9e32b37a3b36e1144855a29 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 16:16:49,043 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 16:16:49,106 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 16:16:49,110 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 16:16:49,110 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 16:16:49,273 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 16:16:49,274 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 16:16:49,274 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 16:16:49,275 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 16:16:49,279 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 16:16:49,279 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 16:16:49,279 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 16:16:49,280 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 16:16:49,281 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 16:16:49,281 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 16:16:49,281 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 16:16:49,282 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 16:16:49,282 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 16:16:49,282 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 16:16:49,282 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 16:16:49,282 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 16:16:49,283 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 16:16:49,283 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 16:16:49,283 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 16:16:49,283 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 16:16:49,283 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 16:16:49,284 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 16:16:49,284 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 16:16:49,284 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 16:16:49,285 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 16:16:49,285 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 16:16:49,286 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 16:16:49,286 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 16:16:49,286 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 16:16:49,286 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 16:16:49,286 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 16:16:49,286 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 16:16:49,287 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 16:16:49,287 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 16:16:49,287 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 16:16:49,287 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 16:16:49,287 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 16:16:49,287 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 16:16:49,288 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f17f6182d2330561fe6717b6a061d0dded698483f9e32b37a3b36e1144855a29 [2024-01-27 16:16:49,529 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 16:16:49,559 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 16:16:49,561 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 16:16:49,561 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 16:16:49,562 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 16:16:49,563 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/qw2004-2b.i [2024-01-27 16:16:50,611 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 16:16:50,863 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 16:16:50,864 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/qw2004-2b.i [2024-01-27 16:16:50,873 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b621f68a/414a6859d5cc4b358beca749cecaca99/FLAGd6ae1c181 [2024-01-27 16:16:50,898 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b621f68a/414a6859d5cc4b358beca749cecaca99 [2024-01-27 16:16:50,900 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 16:16:50,901 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 16:16:50,901 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 16:16:50,901 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 16:16:50,905 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 16:16:50,905 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 04:16:50" (1/1) ... [2024-01-27 16:16:50,906 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2116446d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:16:50, skipping insertion in model container [2024-01-27 16:16:50,906 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 04:16:50" (1/1) ... [2024-01-27 16:16:50,933 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 16:16:51,182 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/qw2004-2b.i[30003,30016] [2024-01-27 16:16:51,210 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 16:16:51,218 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 16:16:51,268 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/qw2004-2b.i[30003,30016] [2024-01-27 16:16:51,282 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 16:16:51,319 INFO L206 MainTranslator]: Completed translation [2024-01-27 16:16:51,320 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:16:51 WrapperNode [2024-01-27 16:16:51,320 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 16:16:51,321 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 16:16:51,321 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 16:16:51,321 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 16:16:51,328 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:16:51" (1/1) ... [2024-01-27 16:16:51,360 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:16:51" (1/1) ... [2024-01-27 16:16:51,382 INFO L138 Inliner]: procedures = 175, calls = 36, calls flagged for inlining = 9, calls inlined = 10, statements flattened = 118 [2024-01-27 16:16:51,384 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 16:16:51,385 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 16:16:51,385 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 16:16:51,385 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 16:16:51,394 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:16:51" (1/1) ... [2024-01-27 16:16:51,394 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:16:51" (1/1) ... [2024-01-27 16:16:51,406 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:16:51" (1/1) ... [2024-01-27 16:16:51,428 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]. [2024-01-27 16:16:51,429 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:16:51" (1/1) ... [2024-01-27 16:16:51,429 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:16:51" (1/1) ... [2024-01-27 16:16:51,440 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:16:51" (1/1) ... [2024-01-27 16:16:51,441 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:16:51" (1/1) ... [2024-01-27 16:16:51,443 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:16:51" (1/1) ... [2024-01-27 16:16:51,457 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:16:51" (1/1) ... [2024-01-27 16:16:51,463 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 16:16:51,464 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 16:16:51,464 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 16:16:51,465 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 16:16:51,465 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:16:51" (1/1) ... [2024-01-27 16:16:51,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 16:16:51,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 16:16:51,507 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 16:16:51,513 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 16:16:51,571 INFO L130 BoogieDeclarations]: Found specification of procedure BCSP_PnpStop [2024-01-27 16:16:51,571 INFO L138 BoogieDeclarations]: Found implementation of procedure BCSP_PnpStop [2024-01-27 16:16:51,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 16:16:51,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 16:16:51,572 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-27 16:16:51,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 16:16:51,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 16:16:51,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 16:16:51,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 16:16:51,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 16:16:51,574 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-27 16:16:51,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 16:16:51,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 16:16:51,575 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 16:16:51,696 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 16:16:51,697 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 16:16:51,915 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 16:16:51,916 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 16:16:52,017 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 16:16:52,018 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-27 16:16:52,018 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 04:16:52 BoogieIcfgContainer [2024-01-27 16:16:52,018 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 16:16:52,020 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 16:16:52,020 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 16:16:52,022 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 16:16:52,022 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 04:16:50" (1/3) ... [2024-01-27 16:16:52,023 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53865dd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 04:16:52, skipping insertion in model container [2024-01-27 16:16:52,023 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:16:51" (2/3) ... [2024-01-27 16:16:52,023 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53865dd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 04:16:52, skipping insertion in model container [2024-01-27 16:16:52,023 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 04:16:52" (3/3) ... [2024-01-27 16:16:52,024 INFO L112 eAbstractionObserver]: Analyzing ICFG qw2004-2b.i [2024-01-27 16:16:52,030 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 16:16:52,038 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 16:16:52,038 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-27 16:16:52,038 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 16:16:52,088 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-27 16:16:52,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 40 transitions, 84 flow [2024-01-27 16:16:52,150 INFO L124 PetriNetUnfolderBase]: 5/39 cut-off events. [2024-01-27 16:16:52,150 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 16:16:52,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 39 events. 5/39 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 72 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2024-01-27 16:16:52,154 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 40 transitions, 84 flow [2024-01-27 16:16:52,157 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 39 transitions, 81 flow [2024-01-27 16:16:52,173 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 16:16:52,179 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;@4ef05649, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 16:16:52,180 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-01-27 16:16:52,197 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 16:16:52,197 INFO L124 PetriNetUnfolderBase]: 4/32 cut-off events. [2024-01-27 16:16:52,197 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 16:16:52,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:16:52,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:16:52,198 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 16:16:52,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:16:52,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1885060704, now seen corresponding path program 1 times [2024-01-27 16:16:52,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:16:52,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714298135] [2024-01-27 16:16:52,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:16:52,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:16:52,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:16:52,442 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 16:16:52,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:16:52,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714298135] [2024-01-27 16:16:52,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714298135] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:16:52,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:16:52,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 16:16:52,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195211813] [2024-01-27 16:16:52,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:16:52,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 16:16:52,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:16:52,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 16:16:52,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 16:16:52,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 40 [2024-01-27 16:16:52,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 39 transitions, 81 flow. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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 16:16:52,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:16:52,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 40 [2024-01-27 16:16:52,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:16:52,642 INFO L124 PetriNetUnfolderBase]: 96/278 cut-off events. [2024-01-27 16:16:52,642 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 16:16:52,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 461 conditions, 278 events. 96/278 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1388 event pairs, 45 based on Foata normal form. 12/262 useless extension candidates. Maximal degree in co-relation 452. Up to 113 conditions per place. [2024-01-27 16:16:52,649 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 27 selfloop transitions, 3 changer transitions 3/53 dead transitions. [2024-01-27 16:16:52,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 53 transitions, 175 flow [2024-01-27 16:16:52,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 16:16:52,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 16:16:52,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2024-01-27 16:16:52,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.74375 [2024-01-27 16:16:52,661 INFO L175 Difference]: Start difference. First operand has 38 places, 39 transitions, 81 flow. Second operand 4 states and 119 transitions. [2024-01-27 16:16:52,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 53 transitions, 175 flow [2024-01-27 16:16:52,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 53 transitions, 174 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 16:16:52,668 INFO L231 Difference]: Finished difference. Result has 42 places, 40 transitions, 99 flow [2024-01-27 16:16:52,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=99, PETRI_PLACES=42, PETRI_TRANSITIONS=40} [2024-01-27 16:16:52,674 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 4 predicate places. [2024-01-27 16:16:52,674 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 40 transitions, 99 flow [2024-01-27 16:16:52,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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 16:16:52,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:16:52,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:16:52,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 16:16:52,676 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 16:16:52,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:16:52,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1302043308, now seen corresponding path program 1 times [2024-01-27 16:16:52,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:16:52,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809843760] [2024-01-27 16:16:52,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:16:52,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:16:52,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:16:52,797 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 16:16:52,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:16:52,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809843760] [2024-01-27 16:16:52,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809843760] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:16:52,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:16:52,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 16:16:52,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395461607] [2024-01-27 16:16:52,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:16:52,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 16:16:52,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:16:52,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 16:16:52,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 16:16:52,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 40 [2024-01-27 16:16:52,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 40 transitions, 99 flow. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 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 16:16:52,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:16:52,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 40 [2024-01-27 16:16:52,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:16:52,915 INFO L124 PetriNetUnfolderBase]: 124/322 cut-off events. [2024-01-27 16:16:52,915 INFO L125 PetriNetUnfolderBase]: For 69/69 co-relation queries the response was YES. [2024-01-27 16:16:52,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 621 conditions, 322 events. 124/322 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1544 event pairs, 55 based on Foata normal form. 0/296 useless extension candidates. Maximal degree in co-relation 610. Up to 128 conditions per place. [2024-01-27 16:16:52,918 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 27 selfloop transitions, 5 changer transitions 21/70 dead transitions. [2024-01-27 16:16:52,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 70 transitions, 280 flow [2024-01-27 16:16:52,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-27 16:16:52,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-27 16:16:52,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-01-27 16:16:52,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.609375 [2024-01-27 16:16:52,925 INFO L175 Difference]: Start difference. First operand has 42 places, 40 transitions, 99 flow. Second operand 8 states and 195 transitions. [2024-01-27 16:16:52,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 70 transitions, 280 flow [2024-01-27 16:16:52,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 70 transitions, 278 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 16:16:52,930 INFO L231 Difference]: Finished difference. Result has 54 places, 40 transitions, 122 flow [2024-01-27 16:16:52,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=122, PETRI_PLACES=54, PETRI_TRANSITIONS=40} [2024-01-27 16:16:52,931 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 16 predicate places. [2024-01-27 16:16:52,932 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 40 transitions, 122 flow [2024-01-27 16:16:52,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 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 16:16:52,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:16:52,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:16:52,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 16:16:52,933 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 16:16:52,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:16:52,934 INFO L85 PathProgramCache]: Analyzing trace with hash 244852166, now seen corresponding path program 1 times [2024-01-27 16:16:52,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:16:52,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438116912] [2024-01-27 16:16:52,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:16:52,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:16:52,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:16:52,980 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 16:16:52,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:16:52,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438116912] [2024-01-27 16:16:52,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438116912] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:16:52,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:16:52,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 16:16:52,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914000622] [2024-01-27 16:16:52,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:16:52,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 16:16:52,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:16:52,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 16:16:52,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 16:16:52,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 40 [2024-01-27 16:16:52,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 40 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 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 16:16:52,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:16:52,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 40 [2024-01-27 16:16:52,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:16:53,084 INFO L124 PetriNetUnfolderBase]: 89/266 cut-off events. [2024-01-27 16:16:53,084 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2024-01-27 16:16:53,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 552 conditions, 266 events. 89/266 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1201 event pairs, 35 based on Foata normal form. 6/255 useless extension candidates. Maximal degree in co-relation 534. Up to 138 conditions per place. [2024-01-27 16:16:53,086 INFO L140 encePairwiseOnDemand]: 37/40 looper letters, 29 selfloop transitions, 1 changer transitions 9/58 dead transitions. [2024-01-27 16:16:53,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 58 transitions, 252 flow [2024-01-27 16:16:53,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 16:16:53,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 16:16:53,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 115 transitions. [2024-01-27 16:16:53,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.71875 [2024-01-27 16:16:53,087 INFO L175 Difference]: Start difference. First operand has 54 places, 40 transitions, 122 flow. Second operand 4 states and 115 transitions. [2024-01-27 16:16:53,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 58 transitions, 252 flow [2024-01-27 16:16:53,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 58 transitions, 236 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-01-27 16:16:53,090 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 117 flow [2024-01-27 16:16:53,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=117, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2024-01-27 16:16:53,090 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 12 predicate places. [2024-01-27 16:16:53,091 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 117 flow [2024-01-27 16:16:53,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 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 16:16:53,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:16:53,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:16:53,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-27 16:16:53,092 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 16:16:53,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:16:53,092 INFO L85 PathProgramCache]: Analyzing trace with hash 818780916, now seen corresponding path program 2 times [2024-01-27 16:16:53,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:16:53,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102356966] [2024-01-27 16:16:53,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:16:53,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:16:53,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:16:53,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:16:53,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:16:53,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102356966] [2024-01-27 16:16:53,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102356966] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:16:53,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:16:53,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 16:16:53,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36950570] [2024-01-27 16:16:53,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:16:53,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 16:16:53,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:16:53,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 16:16:53,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 16:16:53,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 40 [2024-01-27 16:16:53,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 117 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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 16:16:53,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:16:53,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 40 [2024-01-27 16:16:53,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:16:53,198 INFO L124 PetriNetUnfolderBase]: 100/291 cut-off events. [2024-01-27 16:16:53,198 INFO L125 PetriNetUnfolderBase]: For 59/62 co-relation queries the response was YES. [2024-01-27 16:16:53,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 597 conditions, 291 events. 100/291 cut-off events. For 59/62 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1393 event pairs, 30 based on Foata normal form. 17/290 useless extension candidates. Maximal degree in co-relation 580. Up to 121 conditions per place. [2024-01-27 16:16:53,200 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 15 selfloop transitions, 2 changer transitions 34/68 dead transitions. [2024-01-27 16:16:53,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 68 transitions, 291 flow [2024-01-27 16:16:53,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 16:16:53,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 16:16:53,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 145 transitions. [2024-01-27 16:16:53,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.725 [2024-01-27 16:16:53,201 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 117 flow. Second operand 5 states and 145 transitions. [2024-01-27 16:16:53,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 68 transitions, 291 flow [2024-01-27 16:16:53,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 68 transitions, 288 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-01-27 16:16:53,203 INFO L231 Difference]: Finished difference. Result has 54 places, 32 transitions, 108 flow [2024-01-27 16:16:53,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=108, PETRI_PLACES=54, PETRI_TRANSITIONS=32} [2024-01-27 16:16:53,204 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 16 predicate places. [2024-01-27 16:16:53,204 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 32 transitions, 108 flow [2024-01-27 16:16:53,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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 16:16:53,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:16:53,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:16:53,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-27 16:16:53,205 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 16:16:53,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:16:53,205 INFO L85 PathProgramCache]: Analyzing trace with hash 639693921, now seen corresponding path program 1 times [2024-01-27 16:16:53,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:16:53,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790625466] [2024-01-27 16:16:53,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:16:53,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:16:53,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:16:53,271 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 16:16:53,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:16:53,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790625466] [2024-01-27 16:16:53,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790625466] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:16:53,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:16:53,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-27 16:16:53,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515488307] [2024-01-27 16:16:53,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:16:53,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 16:16:53,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:16:53,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 16:16:53,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-01-27 16:16:53,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 40 [2024-01-27 16:16:53,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 32 transitions, 108 flow. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 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 16:16:53,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:16:53,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 40 [2024-01-27 16:16:53,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:16:53,391 INFO L124 PetriNetUnfolderBase]: 92/307 cut-off events. [2024-01-27 16:16:53,391 INFO L125 PetriNetUnfolderBase]: For 99/101 co-relation queries the response was YES. [2024-01-27 16:16:53,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 698 conditions, 307 events. 92/307 cut-off events. For 99/101 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1615 event pairs, 28 based on Foata normal form. 7/298 useless extension candidates. Maximal degree in co-relation 678. Up to 106 conditions per place. [2024-01-27 16:16:53,393 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 35 selfloop transitions, 6 changer transitions 19/75 dead transitions. [2024-01-27 16:16:53,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 75 transitions, 352 flow [2024-01-27 16:16:53,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-27 16:16:53,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-27 16:16:53,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 258 transitions. [2024-01-27 16:16:53,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5863636363636363 [2024-01-27 16:16:53,395 INFO L175 Difference]: Start difference. First operand has 54 places, 32 transitions, 108 flow. Second operand 11 states and 258 transitions. [2024-01-27 16:16:53,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 75 transitions, 352 flow [2024-01-27 16:16:53,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 75 transitions, 324 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-01-27 16:16:53,397 INFO L231 Difference]: Finished difference. Result has 58 places, 36 transitions, 153 flow [2024-01-27 16:16:53,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=153, PETRI_PLACES=58, PETRI_TRANSITIONS=36} [2024-01-27 16:16:53,398 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 20 predicate places. [2024-01-27 16:16:53,398 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 36 transitions, 153 flow [2024-01-27 16:16:53,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 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 16:16:53,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:16:53,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:16:53,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-27 16:16:53,399 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 16:16:53,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:16:53,400 INFO L85 PathProgramCache]: Analyzing trace with hash -277284049, now seen corresponding path program 2 times [2024-01-27 16:16:53,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:16:53,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679042552] [2024-01-27 16:16:53,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:16:53,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:16:53,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-27 16:16:53,409 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-27 16:16:53,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-27 16:16:53,429 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-27 16:16:53,429 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-27 16:16:53,430 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-01-27 16:16:53,431 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2024-01-27 16:16:53,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-27 16:16:53,432 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2024-01-27 16:16:53,436 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-27 16:16:53,436 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-27 16:16:53,462 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 04:16:53 BasicIcfg [2024-01-27 16:16:53,462 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-27 16:16:53,463 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-01-27 16:16:53,463 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-01-27 16:16:53,463 INFO L274 PluginConnector]: Witness Printer initialized [2024-01-27 16:16:53,463 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 04:16:52" (3/4) ... [2024-01-27 16:16:53,464 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2024-01-27 16:16:53,499 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-01-27 16:16:53,499 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-01-27 16:16:53,499 INFO L158 Benchmark]: Toolchain (without parser) took 2598.77ms. Allocated memory is still 186.6MB. Free memory was 154.8MB in the beginning and 62.0MB in the end (delta: 92.9MB). Peak memory consumption was 93.3MB. Max. memory is 16.1GB. [2024-01-27 16:16:53,500 INFO L158 Benchmark]: CDTParser took 2.46ms. Allocated memory is still 111.1MB. Free memory is still 81.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-27 16:16:53,500 INFO L158 Benchmark]: CACSL2BoogieTranslator took 418.93ms. Allocated memory is still 186.6MB. Free memory was 154.8MB in the beginning and 134.3MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-01-27 16:16:53,500 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.19ms. Allocated memory is still 186.6MB. Free memory was 134.3MB in the beginning and 132.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-27 16:16:53,500 INFO L158 Benchmark]: Boogie Preprocessor took 78.99ms. Allocated memory is still 186.6MB. Free memory was 132.2MB in the beginning and 130.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-27 16:16:53,501 INFO L158 Benchmark]: RCFGBuilder took 554.03ms. Allocated memory is still 186.6MB. Free memory was 129.0MB in the beginning and 138.6MB in the end (delta: -9.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-01-27 16:16:53,501 INFO L158 Benchmark]: TraceAbstraction took 1442.47ms. Allocated memory is still 186.6MB. Free memory was 137.5MB in the beginning and 66.2MB in the end (delta: 71.4MB). Peak memory consumption was 73.5MB. Max. memory is 16.1GB. [2024-01-27 16:16:53,501 INFO L158 Benchmark]: Witness Printer took 36.27ms. Allocated memory is still 186.6MB. Free memory was 66.2MB in the beginning and 62.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-01-27 16:16:53,502 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 2.46ms. Allocated memory is still 111.1MB. Free memory is still 81.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 418.93ms. Allocated memory is still 186.6MB. Free memory was 154.8MB in the beginning and 134.3MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.19ms. Allocated memory is still 186.6MB. Free memory was 134.3MB in the beginning and 132.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 78.99ms. Allocated memory is still 186.6MB. Free memory was 132.2MB in the beginning and 130.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 554.03ms. Allocated memory is still 186.6MB. Free memory was 129.0MB in the beginning and 138.6MB in the end (delta: -9.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1442.47ms. Allocated memory is still 186.6MB. Free memory was 137.5MB in the beginning and 66.2MB in the end (delta: 71.4MB). Peak memory consumption was 73.5MB. Max. memory is 16.1GB. * Witness Printer took 36.27ms. Allocated memory is still 186.6MB. Free memory was 66.2MB in the beginning and 62.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 690]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L697] 0 volatile int stoppingFlag; [L698] 0 volatile int pendingIo; [L699] 0 volatile int stoppingEvent; [L700] 0 volatile int stopped; [L756] 0 pthread_t t; [L757] 0 pendingIo = 1 [L758] 0 stoppingFlag = 0 [L759] 0 stoppingEvent = 0 [L760] 0 stopped = 0 [L761] FCALL, FORK 0 pthread_create(&t, 0, BCSP_PnpStop, 0) VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0, t={3:0}] [L762] CALL 0 BCSP_PnpAdd(0) [L734] 0 int status; [L735] CALL, EXPR 0 BCSP_IoIncrement() [L703] 0 int lsf = stoppingFlag; VAL [lsf=0, pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L745] 1 stoppingFlag = 1 VAL [arg={0:0}, arg={0:0}, pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L747] CALL 1 BCSP_IoDecrement() [L725] 1 int pending; [L726] CALL, EXPR 1 dec() [L705] COND FALSE 0 !(\read(lsf)) VAL [lsf=0, pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L709] 0 int lp = pendingIo; VAL [lp=1, lsf=0, pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L719] 1 pendingIo-- [L720] 1 int tmp = pendingIo; VAL [pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=1, tmp=0] [L722] 1 return tmp; [L726] RET, EXPR 1 dec() [L726] 1 pending = dec() [L727] COND TRUE 1 pending == 0 VAL [pending=0, pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=1] [L729] 1 stoppingEvent = 1 VAL [pending=0, pendingIo=0, stopped=0, stoppingEvent=1, stoppingFlag=1] [L747] RET 1 BCSP_IoDecrement() [L749] 1 int lse = stoppingEvent; VAL [arg={0:0}, arg={0:0}, lse=1, pendingIo=0, stopped=0, stoppingEvent=1, stoppingFlag=1] [L751] CALL 1 assume_abort_if_not(lse) [L686] COND FALSE 1 !(!cond) [L751] RET 1 assume_abort_if_not(lse) [L712] EXPR 0 pendingIo = lp + 1 VAL [lp=1, lsf=0, pendingIo=2, stopped=0, stoppingEvent=1, stoppingFlag=1] [L707-L714] 0 { __VERIFIER_atomic_begin(); int lp = pendingIo; __VERIFIER_atomic_end(); __VERIFIER_atomic_begin(); pendingIo = lp + 1; __VERIFIER_atomic_end(); } [L715] 0 return 0; VAL [\result=0, lsf=0, pendingIo=2, stopped=0, stoppingEvent=1, stoppingFlag=1] [L735] RET, EXPR 0 BCSP_IoIncrement() [L735] 0 status = BCSP_IoIncrement() [L736] COND TRUE 0 status == 0 VAL [arg={0:0}, arg={0:0}, pendingIo=2, status=0, stopped=0, stoppingEvent=1, stoppingFlag=1] [L752] 1 stopped = 1 VAL [arg={0:0}, arg={0:0}, lse=1, pendingIo=2, stopped=1, stoppingEvent=1, stoppingFlag=1] [L737] 0 int local_assertion = !stopped; VAL [arg={0:0}, arg={0:0}, local_assertion=0, pendingIo=2, status=0, stopped=1, stoppingEvent=1, stoppingFlag=1] [L738] CALL 0 __VERIFIER_assert(local_assertion) [L689] COND TRUE 0 !(cond) VAL [\old(cond)=0, cond=0, pendingIo=2, stopped=1, stoppingEvent=1, stoppingFlag=1] [L690] 0 reach_error() VAL [\old(cond)=0, cond=0, pendingIo=2, stopped=1, stoppingEvent=1, stoppingFlag=1] - UnprovableResult [Line: 761]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 50 locations, 2 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: 1.3s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 154 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 136 mSDsluCounter, 78 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 59 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 500 IncrementalHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 19 mSDtfsCounter, 500 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=153occurred in iteration=5, InterpolantAutomatonStates: 32, 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, 0.3s InterpolantComputationTime, 123 NumberOfCodeBlocks, 123 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 93 ConstructedInterpolants, 0 QuantifiedInterpolants, 197 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 RESULT: Ultimate proved your program to be incorrect! [2024-01-27 16:16:53,522 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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE