./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-atomic/dekker.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-atomic/dekker.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 1b6ef65da122b5f043dc58aac5c98a5417eca7613b00ec724ef2626b8a50d79f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 15:06:24,921 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 15:06:24,978 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 15:06:24,985 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 15:06:24,985 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 15:06:25,008 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 15:06:25,008 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 15:06:25,009 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 15:06:25,009 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 15:06:25,012 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 15:06:25,013 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 15:06:25,013 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 15:06:25,014 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 15:06:25,015 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 15:06:25,015 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 15:06:25,015 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 15:06:25,015 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 15:06:25,016 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 15:06:25,016 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 15:06:25,016 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 15:06:25,017 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 15:06:25,017 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 15:06:25,018 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 15:06:25,018 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 15:06:25,018 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 15:06:25,018 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 15:06:25,018 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 15:06:25,019 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 15:06:25,019 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 15:06:25,019 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 15:06:25,020 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 15:06:25,020 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 15:06:25,020 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:06:25,020 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 15:06:25,021 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 15:06:25,021 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 15:06:25,021 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 15:06:25,021 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 15:06:25,021 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 15:06:25,021 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 15:06:25,022 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 15:06:25,022 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 15:06:25,022 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 15:06:25,022 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b6ef65da122b5f043dc58aac5c98a5417eca7613b00ec724ef2626b8a50d79f [2024-01-27 15:06:25,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 15:06:25,267 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 15:06:25,269 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 15:06:25,270 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 15:06:25,270 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 15:06:25,271 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/dekker.i [2024-01-27 15:06:26,377 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 15:06:26,568 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 15:06:26,570 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i [2024-01-27 15:06:26,579 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/196636c42/9d3fd7213af449e4be1e2616e70cebf3/FLAG11511bbb1 [2024-01-27 15:06:26,594 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/196636c42/9d3fd7213af449e4be1e2616e70cebf3 [2024-01-27 15:06:26,595 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 15:06:26,596 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 15:06:26,599 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 15:06:26,599 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 15:06:26,602 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 15:06:26,603 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:06:26" (1/1) ... [2024-01-27 15:06:26,603 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a56d807 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:06:26, skipping insertion in model container [2024-01-27 15:06:26,603 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:06:26" (1/1) ... [2024-01-27 15:06:26,646 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 15:06:26,912 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-atomic/dekker.i[31403,31416] [2024-01-27 15:06:26,923 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-atomic/dekker.i[32483,32496] [2024-01-27 15:06:26,928 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:06:26,935 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 15:06:26,977 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-atomic/dekker.i[31403,31416] [2024-01-27 15:06:26,982 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-atomic/dekker.i[32483,32496] [2024-01-27 15:06:26,985 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:06:27,017 INFO L206 MainTranslator]: Completed translation [2024-01-27 15:06:27,018 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:06:27 WrapperNode [2024-01-27 15:06:27,018 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 15:06:27,019 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 15:06:27,019 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 15:06:27,020 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 15:06:27,024 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:06:27" (1/1) ... [2024-01-27 15:06:27,046 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:06:27" (1/1) ... [2024-01-27 15:06:27,064 INFO L138 Inliner]: procedures = 171, calls = 59, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 46 [2024-01-27 15:06:27,065 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 15:06:27,065 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 15:06:27,065 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 15:06:27,065 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 15:06:27,073 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:06:27" (1/1) ... [2024-01-27 15:06:27,073 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:06:27" (1/1) ... [2024-01-27 15:06:27,083 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:06:27" (1/1) ... [2024-01-27 15:06:27,105 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-01-27 15:06:27,105 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:06:27" (1/1) ... [2024-01-27 15:06:27,105 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:06:27" (1/1) ... [2024-01-27 15:06:27,117 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:06:27" (1/1) ... [2024-01-27 15:06:27,120 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:06:27" (1/1) ... [2024-01-27 15:06:27,126 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:06:27" (1/1) ... [2024-01-27 15:06:27,128 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:06:27" (1/1) ... [2024-01-27 15:06:27,131 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 15:06:27,133 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 15:06:27,133 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 15:06:27,134 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 15:06:27,134 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:06:27" (1/1) ... [2024-01-27 15:06:27,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:06:27,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:06:27,157 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-27 15:06:27,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-27 15:06:27,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-27 15:06:27,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-27 15:06:27,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-27 15:06:27,210 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2024-01-27 15:06:27,211 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2024-01-27 15:06:27,212 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-01-27 15:06:27,212 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-01-27 15:06:27,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 15:06:27,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 15:06:27,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 15:06:27,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-27 15:06:27,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 15:06:27,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 15:06:27,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 15:06:27,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 15:06:27,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 15:06:27,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 15:06:27,240 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-27 15:06:27,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 15:06:27,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 15:06:27,242 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-27 15:06:27,366 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 15:06:27,368 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 15:06:27,508 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 15:06:27,508 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 15:06:27,593 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 15:06:27,593 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-01-27 15:06:27,593 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:06:27 BoogieIcfgContainer [2024-01-27 15:06:27,593 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 15:06:27,601 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 15:06:27,601 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 15:06:27,603 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 15:06:27,604 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 03:06:26" (1/3) ... [2024-01-27 15:06:27,604 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@796cc14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:06:27, skipping insertion in model container [2024-01-27 15:06:27,605 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:06:27" (2/3) ... [2024-01-27 15:06:27,605 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@796cc14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:06:27, skipping insertion in model container [2024-01-27 15:06:27,607 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:06:27" (3/3) ... [2024-01-27 15:06:27,608 INFO L112 eAbstractionObserver]: Analyzing ICFG dekker.i [2024-01-27 15:06:27,614 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 15:06:27,620 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 15:06:27,620 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-01-27 15:06:27,620 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 15:06:27,672 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-01-27 15:06:27,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 57 transitions, 128 flow [2024-01-27 15:06:27,762 INFO L124 PetriNetUnfolderBase]: 8/55 cut-off events. [2024-01-27 15:06:27,762 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-27 15:06:27,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 55 events. 8/55 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 139 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2024-01-27 15:06:27,765 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 57 transitions, 128 flow [2024-01-27 15:06:27,769 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 53 transitions, 115 flow [2024-01-27 15:06:27,781 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 15:06:27,788 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;@76e13c65, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 15:06:27,788 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-01-27 15:06:27,799 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 15:06:27,799 INFO L124 PetriNetUnfolderBase]: 1/19 cut-off events. [2024-01-27 15:06:27,799 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 15:06:27,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:06:27,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:06:27,800 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-01-27 15:06:27,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:06:27,805 INFO L85 PathProgramCache]: Analyzing trace with hash -132943270, now seen corresponding path program 1 times [2024-01-27 15:06:27,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:06:27,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067305573] [2024-01-27 15:06:27,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:06:27,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:06:27,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:06:28,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:06:28,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:06:28,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067305573] [2024-01-27 15:06:28,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067305573] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:06:28,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:06:28,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:06:28,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624752451] [2024-01-27 15:06:28,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:06:28,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:06:28,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:06:28,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:06:28,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:06:28,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 57 [2024-01-27 15:06:28,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 53 transitions, 115 flow. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:06:28,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:06:28,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 57 [2024-01-27 15:06:28,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:06:28,196 INFO L124 PetriNetUnfolderBase]: 101/311 cut-off events. [2024-01-27 15:06:28,196 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-01-27 15:06:28,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 498 conditions, 311 events. 101/311 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1756 event pairs, 35 based on Foata normal form. 42/312 useless extension candidates. Maximal degree in co-relation 420. Up to 86 conditions per place. [2024-01-27 15:06:28,200 INFO L140 encePairwiseOnDemand]: 50/57 looper letters, 18 selfloop transitions, 3 changer transitions 1/58 dead transitions. [2024-01-27 15:06:28,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 58 transitions, 172 flow [2024-01-27 15:06:28,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:06:28,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:06:28,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 141 transitions. [2024-01-27 15:06:28,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8245614035087719 [2024-01-27 15:06:28,210 INFO L175 Difference]: Start difference. First operand has 52 places, 53 transitions, 115 flow. Second operand 3 states and 141 transitions. [2024-01-27 15:06:28,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 58 transitions, 172 flow [2024-01-27 15:06:28,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 58 transitions, 165 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-27 15:06:28,215 INFO L231 Difference]: Finished difference. Result has 53 places, 52 transitions, 126 flow [2024-01-27 15:06:28,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=53, PETRI_TRANSITIONS=52} [2024-01-27 15:06:28,218 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 1 predicate places. [2024-01-27 15:06:28,218 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 52 transitions, 126 flow [2024-01-27 15:06:28,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:06:28,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:06:28,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:06:28,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 15:06:28,219 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-01-27 15:06:28,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:06:28,220 INFO L85 PathProgramCache]: Analyzing trace with hash -895869348, now seen corresponding path program 1 times [2024-01-27 15:06:28,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:06:28,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66282458] [2024-01-27 15:06:28,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:06:28,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:06:28,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:06:28,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:06:28,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:06:28,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66282458] [2024-01-27 15:06:28,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66282458] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:06:28,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:06:28,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:06:28,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912746999] [2024-01-27 15:06:28,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:06:28,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:06:28,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:06:28,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:06:28,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:06:28,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 57 [2024-01-27 15:06:28,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 52 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:06:28,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:06:28,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 57 [2024-01-27 15:06:28,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:06:28,389 INFO L124 PetriNetUnfolderBase]: 107/346 cut-off events. [2024-01-27 15:06:28,389 INFO L125 PetriNetUnfolderBase]: For 75/75 co-relation queries the response was YES. [2024-01-27 15:06:28,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 609 conditions, 346 events. 107/346 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1885 event pairs, 49 based on Foata normal form. 16/329 useless extension candidates. Maximal degree in co-relation 317. Up to 127 conditions per place. [2024-01-27 15:06:28,393 INFO L140 encePairwiseOnDemand]: 53/57 looper letters, 16 selfloop transitions, 2 changer transitions 4/58 dead transitions. [2024-01-27 15:06:28,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 58 transitions, 183 flow [2024-01-27 15:06:28,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:06:28,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:06:28,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 138 transitions. [2024-01-27 15:06:28,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8070175438596491 [2024-01-27 15:06:28,400 INFO L175 Difference]: Start difference. First operand has 53 places, 52 transitions, 126 flow. Second operand 3 states and 138 transitions. [2024-01-27 15:06:28,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 58 transitions, 183 flow [2024-01-27 15:06:28,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 58 transitions, 177 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 15:06:28,403 INFO L231 Difference]: Finished difference. Result has 54 places, 52 transitions, 130 flow [2024-01-27 15:06:28,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=54, PETRI_TRANSITIONS=52} [2024-01-27 15:06:28,404 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 2 predicate places. [2024-01-27 15:06:28,404 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 52 transitions, 130 flow [2024-01-27 15:06:28,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:06:28,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:06:28,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:06:28,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 15:06:28,407 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-01-27 15:06:28,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:06:28,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1189588865, now seen corresponding path program 1 times [2024-01-27 15:06:28,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:06:28,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828290936] [2024-01-27 15:06:28,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:06:28,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:06:28,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:06:28,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:06:28,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:06:28,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828290936] [2024-01-27 15:06:28,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828290936] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:06:28,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:06:28,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:06:28,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143706127] [2024-01-27 15:06:28,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:06:28,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:06:28,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:06:28,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:06:28,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:06:28,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 57 [2024-01-27 15:06:28,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 52 transitions, 130 flow. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:06:28,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:06:28,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 57 [2024-01-27 15:06:28,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:06:28,577 INFO L124 PetriNetUnfolderBase]: 287/754 cut-off events. [2024-01-27 15:06:28,577 INFO L125 PetriNetUnfolderBase]: For 226/226 co-relation queries the response was YES. [2024-01-27 15:06:28,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1323 conditions, 754 events. 287/754 cut-off events. For 226/226 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4811 event pairs, 77 based on Foata normal form. 16/707 useless extension candidates. Maximal degree in co-relation 959. Up to 225 conditions per place. [2024-01-27 15:06:28,581 INFO L140 encePairwiseOnDemand]: 50/57 looper letters, 29 selfloop transitions, 9 changer transitions 4/74 dead transitions. [2024-01-27 15:06:28,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 74 transitions, 268 flow [2024-01-27 15:06:28,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:06:28,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:06:28,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 213 transitions. [2024-01-27 15:06:28,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7473684210526316 [2024-01-27 15:06:28,582 INFO L175 Difference]: Start difference. First operand has 54 places, 52 transitions, 130 flow. Second operand 5 states and 213 transitions. [2024-01-27 15:06:28,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 74 transitions, 268 flow [2024-01-27 15:06:28,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 74 transitions, 265 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 15:06:28,584 INFO L231 Difference]: Finished difference. Result has 60 places, 57 transitions, 179 flow [2024-01-27 15:06:28,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=179, PETRI_PLACES=60, PETRI_TRANSITIONS=57} [2024-01-27 15:06:28,585 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 8 predicate places. [2024-01-27 15:06:28,585 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 57 transitions, 179 flow [2024-01-27 15:06:28,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:06:28,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:06:28,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:06:28,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-27 15:06:28,586 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-01-27 15:06:28,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:06:28,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1500189543, now seen corresponding path program 2 times [2024-01-27 15:06:28,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:06:28,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197475649] [2024-01-27 15:06:28,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:06:28,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:06:28,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:06:28,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:06:28,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:06:28,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197475649] [2024-01-27 15:06:28,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197475649] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:06:28,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:06:28,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:06:28,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544769327] [2024-01-27 15:06:28,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:06:28,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:06:28,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:06:28,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:06:28,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:06:28,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 57 [2024-01-27 15:06:28,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 57 transitions, 179 flow. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:06:28,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:06:28,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 57 [2024-01-27 15:06:28,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:06:28,795 INFO L124 PetriNetUnfolderBase]: 430/1046 cut-off events. [2024-01-27 15:06:28,795 INFO L125 PetriNetUnfolderBase]: For 359/363 co-relation queries the response was YES. [2024-01-27 15:06:28,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1988 conditions, 1046 events. 430/1046 cut-off events. For 359/363 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 7346 event pairs, 133 based on Foata normal form. 30/1014 useless extension candidates. Maximal degree in co-relation 1260. Up to 271 conditions per place. [2024-01-27 15:06:28,798 INFO L140 encePairwiseOnDemand]: 50/57 looper letters, 0 selfloop transitions, 0 changer transitions 73/73 dead transitions. [2024-01-27 15:06:28,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 73 transitions, 298 flow [2024-01-27 15:06:28,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:06:28,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:06:28,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 211 transitions. [2024-01-27 15:06:28,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7403508771929824 [2024-01-27 15:06:28,800 INFO L175 Difference]: Start difference. First operand has 60 places, 57 transitions, 179 flow. Second operand 5 states and 211 transitions. [2024-01-27 15:06:28,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 73 transitions, 298 flow [2024-01-27 15:06:28,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 73 transitions, 294 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-01-27 15:06:28,805 INFO L231 Difference]: Finished difference. Result has 60 places, 0 transitions, 0 flow [2024-01-27 15:06:28,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=60, PETRI_TRANSITIONS=0} [2024-01-27 15:06:28,807 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 8 predicate places. [2024-01-27 15:06:28,808 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 0 transitions, 0 flow [2024-01-27 15:06:28,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:06:28,811 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2024-01-27 15:06:28,811 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2024-01-27 15:06:28,812 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2024-01-27 15:06:28,812 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2024-01-27 15:06:28,812 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2024-01-27 15:06:28,812 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2024-01-27 15:06:28,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-27 15:06:28,813 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-01-27 15:06:28,817 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-27 15:06:28,817 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-27 15:06:28,824 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 03:06:28 BasicIcfg [2024-01-27 15:06:28,824 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-27 15:06:28,825 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-01-27 15:06:28,825 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-01-27 15:06:28,825 INFO L274 PluginConnector]: Witness Printer initialized [2024-01-27 15:06:28,825 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:06:27" (3/4) ... [2024-01-27 15:06:28,827 INFO L137 WitnessPrinter]: Generating witness for correct program [2024-01-27 15:06:28,829 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2024-01-27 15:06:28,829 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2024-01-27 15:06:28,833 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 39 nodes and edges [2024-01-27 15:06:28,833 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-01-27 15:06:28,833 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-01-27 15:06:28,833 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-01-27 15:06:28,894 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-01-27 15:06:28,895 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-01-27 15:06:28,895 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-01-27 15:06:28,895 INFO L158 Benchmark]: Toolchain (without parser) took 2298.85ms. Allocated memory was 121.6MB in the beginning and 163.6MB in the end (delta: 41.9MB). Free memory was 83.8MB in the beginning and 119.1MB in the end (delta: -35.4MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. [2024-01-27 15:06:28,895 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 121.6MB. Free memory is still 94.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-27 15:06:28,896 INFO L158 Benchmark]: CACSL2BoogieTranslator took 419.99ms. Allocated memory is still 121.6MB. Free memory was 83.4MB in the beginning and 62.8MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-01-27 15:06:28,896 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.33ms. Allocated memory is still 121.6MB. Free memory was 62.8MB in the beginning and 60.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-27 15:06:28,896 INFO L158 Benchmark]: Boogie Preprocessor took 67.19ms. Allocated memory is still 121.6MB. Free memory was 60.7MB in the beginning and 58.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-27 15:06:28,896 INFO L158 Benchmark]: RCFGBuilder took 460.20ms. Allocated memory is still 121.6MB. Free memory was 58.3MB in the beginning and 74.4MB in the end (delta: -16.1MB). Peak memory consumption was 7.0MB. Max. memory is 16.1GB. [2024-01-27 15:06:28,897 INFO L158 Benchmark]: TraceAbstraction took 1223.23ms. Allocated memory was 121.6MB in the beginning and 163.6MB in the end (delta: 41.9MB). Free memory was 73.7MB in the beginning and 123.3MB in the end (delta: -49.6MB). Peak memory consumption was 63.8MB. Max. memory is 16.1GB. [2024-01-27 15:06:28,897 INFO L158 Benchmark]: Witness Printer took 70.00ms. Allocated memory is still 163.6MB. Free memory was 123.3MB in the beginning and 119.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-01-27 15:06:28,898 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 121.6MB. Free memory is still 94.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 419.99ms. Allocated memory is still 121.6MB. Free memory was 83.4MB in the beginning and 62.8MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.33ms. Allocated memory is still 121.6MB. Free memory was 62.8MB in the beginning and 60.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.19ms. Allocated memory is still 121.6MB. Free memory was 60.7MB in the beginning and 58.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 460.20ms. Allocated memory is still 121.6MB. Free memory was 58.3MB in the beginning and 74.4MB in the end (delta: -16.1MB). Peak memory consumption was 7.0MB. Max. memory is 16.1GB. * TraceAbstraction took 1223.23ms. Allocated memory was 121.6MB in the beginning and 163.6MB in the end (delta: 41.9MB). Free memory was 73.7MB in the beginning and 123.3MB in the end (delta: -49.6MB). Peak memory consumption was 63.8MB. Max. memory is 16.1GB. * Witness Printer took 70.00ms. Allocated memory is still 163.6MB. Free memory was 123.3MB in the beginning and 119.1MB 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: - PositiveResult [Line: 780]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 739]: 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 5 procedures, 92 locations, 6 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: 1.1s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 97 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 64 mSDsluCounter, 37 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 218 IncrementalHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 26 mSDtfsCounter, 218 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=179occurred in iteration=3, InterpolantAutomatonStates: 16, 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, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 72 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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! [2024-01-27 15:06:28,933 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