./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 dbd0a32f8466e9a1ac86b6dfec2b7453fe6f40d8d953742d93d3d05c5ad7b7af --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 16:45:56,104 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 16:45:56,164 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 16:45:56,170 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 16:45:56,170 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 16:45:56,196 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 16:45:56,197 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 16:45:56,197 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 16:45:56,198 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 16:45:56,198 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 16:45:56,199 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 16:45:56,199 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 16:45:56,199 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 16:45:56,199 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 16:45:56,200 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 16:45:56,200 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 16:45:56,200 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 16:45:56,200 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 16:45:56,200 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 16:45:56,200 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 16:45:56,200 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 16:45:56,200 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 16:45:56,200 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 16:45:56,200 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 16:45:56,200 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 16:45:56,200 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 16:45:56,200 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 16:45:56,200 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 16:45:56,201 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 16:45:56,201 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 16:45:56,201 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 16:45:56,201 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 16:45:56,201 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:45:56,201 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 16:45:56,201 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 16:45:56,201 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 16:45:56,202 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 16:45:56,202 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:45:56,202 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 16:45:56,202 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 16:45:56,202 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 16:45:56,202 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 16:45:56,202 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 16:45:56,202 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 16:45:56,202 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 16:45:56,202 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 16:45:56,202 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 16:45:56,203 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 16:45:56,203 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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-jdk21/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 -> dbd0a32f8466e9a1ac86b6dfec2b7453fe6f40d8d953742d93d3d05c5ad7b7af [2025-01-09 16:45:56,428 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 16:45:56,435 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 16:45:56,439 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 16:45:56,440 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 16:45:56,440 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 16:45:56,441 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c [2025-01-09 16:45:57,602 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/91d9ae00b/6c1308c96dac4d21ac33de0ff1675ab6/FLAG02c90040b [2025-01-09 16:45:57,853 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 16:45:57,855 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c [2025-01-09 16:45:57,887 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/91d9ae00b/6c1308c96dac4d21ac33de0ff1675ab6/FLAG02c90040b [2025-01-09 16:45:58,183 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/91d9ae00b/6c1308c96dac4d21ac33de0ff1675ab6 [2025-01-09 16:45:58,184 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 16:45:58,185 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 16:45:58,186 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 16:45:58,186 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 16:45:58,189 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 16:45:58,190 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:45:58" (1/1) ... [2025-01-09 16:45:58,191 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a317b05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:45:58, skipping insertion in model container [2025-01-09 16:45:58,191 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:45:58" (1/1) ... [2025-01-09 16:45:58,207 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 16:45:58,316 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c[2525,2538] [2025-01-09 16:45:58,324 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 16:45:58,331 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 16:45:58,343 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c[2525,2538] [2025-01-09 16:45:58,345 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 16:45:58,357 INFO L204 MainTranslator]: Completed translation [2025-01-09 16:45:58,358 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:45:58 WrapperNode [2025-01-09 16:45:58,358 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 16:45:58,358 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 16:45:58,359 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 16:45:58,359 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 16:45:58,363 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:45:58" (1/1) ... [2025-01-09 16:45:58,367 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:45:58" (1/1) ... [2025-01-09 16:45:58,378 INFO L138 Inliner]: procedures = 23, calls = 28, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 85 [2025-01-09 16:45:58,378 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 16:45:58,378 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 16:45:58,378 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 16:45:58,378 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 16:45:58,383 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:45:58" (1/1) ... [2025-01-09 16:45:58,383 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:45:58" (1/1) ... [2025-01-09 16:45:58,384 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:45:58" (1/1) ... [2025-01-09 16:45:58,394 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 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]. [2025-01-09 16:45:58,394 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:45:58" (1/1) ... [2025-01-09 16:45:58,394 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:45:58" (1/1) ... [2025-01-09 16:45:58,398 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:45:58" (1/1) ... [2025-01-09 16:45:58,399 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:45:58" (1/1) ... [2025-01-09 16:45:58,404 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:45:58" (1/1) ... [2025-01-09 16:45:58,405 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:45:58" (1/1) ... [2025-01-09 16:45:58,406 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:45:58" (1/1) ... [2025-01-09 16:45:58,407 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 16:45:58,408 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 16:45:58,408 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 16:45:58,408 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 16:45:58,409 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:45:58" (1/1) ... [2025-01-09 16:45:58,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:45:58,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:45:58,436 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 16:45:58,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 16:45:58,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 16:45:58,458 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-01-09 16:45:58,458 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-01-09 16:45:58,458 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-01-09 16:45:58,458 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-01-09 16:45:58,459 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-01-09 16:45:58,459 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-01-09 16:45:58,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 16:45:58,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-09 16:45:58,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-09 16:45:58,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-09 16:45:58,459 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-01-09 16:45:58,459 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-01-09 16:45:58,459 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-01-09 16:45:58,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 16:45:58,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 16:45:58,459 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-09 16:45:58,459 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-09 16:45:58,460 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-01-09 16:45:58,544 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 16:45:58,545 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 16:45:58,774 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-09 16:45:58,774 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 16:45:58,922 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 16:45:58,923 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-09 16:45:58,924 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:45:58 BoogieIcfgContainer [2025-01-09 16:45:58,924 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 16:45:58,925 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 16:45:58,925 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 16:45:58,929 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 16:45:58,929 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 04:45:58" (1/3) ... [2025-01-09 16:45:58,929 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23738e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:45:58, skipping insertion in model container [2025-01-09 16:45:58,929 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:45:58" (2/3) ... [2025-01-09 16:45:58,929 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23738e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:45:58, skipping insertion in model container [2025-01-09 16:45:58,929 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:45:58" (3/3) ... [2025-01-09 16:45:58,930 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-min-le-max.wvr.c [2025-01-09 16:45:58,940 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 16:45:58,943 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-min-le-max.wvr.c that has 4 procedures, 29 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2025-01-09 16:45:58,943 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-09 16:45:58,980 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-01-09 16:45:59,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 31 transitions, 83 flow [2025-01-09 16:45:59,033 INFO L124 PetriNetUnfolderBase]: 3/28 cut-off events. [2025-01-09 16:45:59,035 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-01-09 16:45:59,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 28 events. 3/28 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 37 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 22. Up to 2 conditions per place. [2025-01-09 16:45:59,040 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 31 transitions, 83 flow [2025-01-09 16:45:59,042 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 27 transitions, 72 flow [2025-01-09 16:45:59,048 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 16:45:59,055 INFO L333 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, 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;@33bd5c01, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 16:45:59,056 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-01-09 16:45:59,067 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-09 16:45:59,067 INFO L124 PetriNetUnfolderBase]: 3/26 cut-off events. [2025-01-09 16:45:59,067 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-01-09 16:45:59,067 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:45:59,068 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:45:59,068 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-09 16:45:59,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:45:59,073 INFO L85 PathProgramCache]: Analyzing trace with hash -86192055, now seen corresponding path program 1 times [2025-01-09 16:45:59,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:45:59,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078659999] [2025-01-09 16:45:59,079 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:45:59,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:45:59,143 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-01-09 16:45:59,173 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-01-09 16:45:59,174 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:45:59,174 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:45:59,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:45:59,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:45:59,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078659999] [2025-01-09 16:45:59,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078659999] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:45:59,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:45:59,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 16:45:59,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516426471] [2025-01-09 16:45:59,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:45:59,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 16:45:59,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:45:59,425 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 16:45:59,425 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-09 16:45:59,436 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2025-01-09 16:45:59,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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) [2025-01-09 16:45:59,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:45:59,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2025-01-09 16:45:59,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:45:59,577 INFO L124 PetriNetUnfolderBase]: 317/538 cut-off events. [2025-01-09 16:45:59,577 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2025-01-09 16:45:59,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1103 conditions, 538 events. 317/538 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2314 event pairs, 143 based on Foata normal form. 26/538 useless extension candidates. Maximal degree in co-relation 1001. Up to 331 conditions per place. [2025-01-09 16:45:59,586 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 30 selfloop transitions, 3 changer transitions 0/38 dead transitions. [2025-01-09 16:45:59,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 38 transitions, 166 flow [2025-01-09 16:45:59,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 16:45:59,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-09 16:45:59,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 66 transitions. [2025-01-09 16:45:59,598 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.532258064516129 [2025-01-09 16:45:59,600 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 72 flow. Second operand 4 states and 66 transitions. [2025-01-09 16:45:59,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 38 transitions, 166 flow [2025-01-09 16:45:59,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 38 transitions, 150 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-01-09 16:45:59,608 INFO L231 Difference]: Finished difference. Result has 32 places, 28 transitions, 74 flow [2025-01-09 16:45:59,610 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=74, PETRI_PLACES=32, PETRI_TRANSITIONS=28} [2025-01-09 16:45:59,614 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, -2 predicate places. [2025-01-09 16:45:59,614 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 28 transitions, 74 flow [2025-01-09 16:45:59,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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) [2025-01-09 16:45:59,615 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:45:59,615 INFO L206 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] [2025-01-09 16:45:59,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 16:45:59,615 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-09 16:45:59,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:45:59,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1453342711, now seen corresponding path program 1 times [2025-01-09 16:45:59,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:45:59,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221601742] [2025-01-09 16:45:59,616 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:45:59,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:45:59,628 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-01-09 16:45:59,640 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-01-09 16:45:59,640 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:45:59,640 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:45:59,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:45:59,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:45:59,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221601742] [2025-01-09 16:45:59,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221601742] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:45:59,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:45:59,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 16:45:59,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084835326] [2025-01-09 16:45:59,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:45:59,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 16:45:59,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:45:59,735 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 16:45:59,735 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-09 16:45:59,742 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2025-01-09 16:45:59,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 28 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2025-01-09 16:45:59,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:45:59,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2025-01-09 16:45:59,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:45:59,890 INFO L124 PetriNetUnfolderBase]: 465/792 cut-off events. [2025-01-09 16:45:59,890 INFO L125 PetriNetUnfolderBase]: For 167/167 co-relation queries the response was YES. [2025-01-09 16:45:59,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1741 conditions, 792 events. 465/792 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3739 event pairs, 201 based on Foata normal form. 38/801 useless extension candidates. Maximal degree in co-relation 274. Up to 485 conditions per place. [2025-01-09 16:45:59,899 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 33 selfloop transitions, 3 changer transitions 0/41 dead transitions. [2025-01-09 16:45:59,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 41 transitions, 184 flow [2025-01-09 16:45:59,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 16:45:59,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-09 16:45:59,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 67 transitions. [2025-01-09 16:45:59,902 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5403225806451613 [2025-01-09 16:45:59,902 INFO L175 Difference]: Start difference. First operand has 32 places, 28 transitions, 74 flow. Second operand 4 states and 67 transitions. [2025-01-09 16:45:59,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 41 transitions, 184 flow [2025-01-09 16:45:59,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 41 transitions, 178 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-09 16:45:59,903 INFO L231 Difference]: Finished difference. Result has 34 places, 29 transitions, 84 flow [2025-01-09 16:45:59,903 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=84, PETRI_PLACES=34, PETRI_TRANSITIONS=29} [2025-01-09 16:45:59,904 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 0 predicate places. [2025-01-09 16:45:59,904 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 84 flow [2025-01-09 16:45:59,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2025-01-09 16:45:59,904 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:45:59,904 INFO L206 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, 1] [2025-01-09 16:45:59,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 16:45:59,904 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-09 16:45:59,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:45:59,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1060395178, now seen corresponding path program 1 times [2025-01-09 16:45:59,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:45:59,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394495639] [2025-01-09 16:45:59,907 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:45:59,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:45:59,916 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-01-09 16:45:59,933 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-01-09 16:45:59,935 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:45:59,935 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:46:00,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:46:00,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:46:00,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394495639] [2025-01-09 16:46:00,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394495639] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:46:00,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:46:00,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-09 16:46:00,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468321999] [2025-01-09 16:46:00,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:46:00,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 16:46:00,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:46:00,022 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 16:46:00,022 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 16:46:00,027 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2025-01-09 16:46:00,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2025-01-09 16:46:00,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:46:00,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2025-01-09 16:46:00,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:46:00,131 INFO L124 PetriNetUnfolderBase]: 465/794 cut-off events. [2025-01-09 16:46:00,132 INFO L125 PetriNetUnfolderBase]: For 286/286 co-relation queries the response was YES. [2025-01-09 16:46:00,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1897 conditions, 794 events. 465/794 cut-off events. For 286/286 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3772 event pairs, 388 based on Foata normal form. 1/762 useless extension candidates. Maximal degree in co-relation 534. Up to 712 conditions per place. [2025-01-09 16:46:00,138 INFO L140 encePairwiseOnDemand]: 28/31 looper letters, 23 selfloop transitions, 2 changer transitions 0/30 dead transitions. [2025-01-09 16:46:00,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 30 transitions, 136 flow [2025-01-09 16:46:00,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 16:46:00,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-09 16:46:00,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 48 transitions. [2025-01-09 16:46:00,140 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5161290322580645 [2025-01-09 16:46:00,140 INFO L175 Difference]: Start difference. First operand has 34 places, 29 transitions, 84 flow. Second operand 3 states and 48 transitions. [2025-01-09 16:46:00,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 30 transitions, 136 flow [2025-01-09 16:46:00,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 30 transitions, 132 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-09 16:46:00,143 INFO L231 Difference]: Finished difference. Result has 35 places, 30 transitions, 92 flow [2025-01-09 16:46:00,143 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=35, PETRI_TRANSITIONS=30} [2025-01-09 16:46:00,144 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 1 predicate places. [2025-01-09 16:46:00,144 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 92 flow [2025-01-09 16:46:00,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2025-01-09 16:46:00,144 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:46:00,144 INFO L206 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, 1, 1] [2025-01-09 16:46:00,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 16:46:00,145 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-09 16:46:00,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:46:00,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1349232662, now seen corresponding path program 1 times [2025-01-09 16:46:00,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:46:00,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801375149] [2025-01-09 16:46:00,146 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:46:00,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:46:00,158 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-01-09 16:46:00,174 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-01-09 16:46:00,174 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:46:00,174 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:46:00,448 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 16:46:00,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:46:00,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801375149] [2025-01-09 16:46:00,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801375149] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:46:00,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:46:00,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 16:46:00,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929842267] [2025-01-09 16:46:00,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:46:00,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 16:46:00,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:46:00,449 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 16:46:00,449 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-01-09 16:46:00,452 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2025-01-09 16:46:00,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 92 flow. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 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) [2025-01-09 16:46:00,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:46:00,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2025-01-09 16:46:00,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:46:00,664 INFO L124 PetriNetUnfolderBase]: 658/1026 cut-off events. [2025-01-09 16:46:00,664 INFO L125 PetriNetUnfolderBase]: For 317/317 co-relation queries the response was YES. [2025-01-09 16:46:00,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2467 conditions, 1026 events. 658/1026 cut-off events. For 317/317 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4210 event pairs, 51 based on Foata normal form. 1/1023 useless extension candidates. Maximal degree in co-relation 2454. Up to 481 conditions per place. [2025-01-09 16:46:00,667 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 0 selfloop transitions, 0 changer transitions 71/71 dead transitions. [2025-01-09 16:46:00,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 71 transitions, 348 flow [2025-01-09 16:46:00,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 16:46:00,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-01-09 16:46:00,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 120 transitions. [2025-01-09 16:46:00,670 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4838709677419355 [2025-01-09 16:46:00,671 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 92 flow. Second operand 8 states and 120 transitions. [2025-01-09 16:46:00,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 71 transitions, 348 flow [2025-01-09 16:46:00,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 71 transitions, 344 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-01-09 16:46:00,673 INFO L231 Difference]: Finished difference. Result has 39 places, 0 transitions, 0 flow [2025-01-09 16:46:00,673 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=39, PETRI_TRANSITIONS=0} [2025-01-09 16:46:00,674 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 5 predicate places. [2025-01-09 16:46:00,675 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 0 transitions, 0 flow [2025-01-09 16:46:00,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 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) [2025-01-09 16:46:00,677 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2025-01-09 16:46:00,677 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2025-01-09 16:46:00,677 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2025-01-09 16:46:00,677 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2025-01-09 16:46:00,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-09 16:46:00,678 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2025-01-09 16:46:00,681 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-01-09 16:46:00,681 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-01-09 16:46:00,687 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.01 04:46:00 BasicIcfg [2025-01-09 16:46:00,687 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-01-09 16:46:00,688 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-01-09 16:46:00,689 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-01-09 16:46:00,689 INFO L274 PluginConnector]: Witness Printer initialized [2025-01-09 16:46:00,690 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:45:58" (3/4) ... [2025-01-09 16:46:00,692 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-01-09 16:46:00,695 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2025-01-09 16:46:00,695 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2025-01-09 16:46:00,696 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2025-01-09 16:46:00,700 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 89 nodes and edges [2025-01-09 16:46:00,701 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2025-01-09 16:46:00,702 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2025-01-09 16:46:00,702 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2025-01-09 16:46:00,764 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-01-09 16:46:00,765 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-01-09 16:46:00,765 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-01-09 16:46:00,766 INFO L158 Benchmark]: Toolchain (without parser) took 2579.94ms. Allocated memory was 142.6MB in the beginning and 285.2MB in the end (delta: 142.6MB). Free memory was 106.5MB in the beginning and 225.6MB in the end (delta: -119.0MB). Peak memory consumption was 19.8MB. Max. memory is 16.1GB. [2025-01-09 16:46:00,767 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory is still 126.2MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 16:46:00,769 INFO L158 Benchmark]: CACSL2BoogieTranslator took 171.63ms. Allocated memory is still 142.6MB. Free memory was 106.5MB in the beginning and 94.4MB in the end (delta: 12.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-09 16:46:00,769 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.48ms. Allocated memory is still 142.6MB. Free memory was 94.4MB in the beginning and 93.3MB in the end (delta: 1.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-09 16:46:00,769 INFO L158 Benchmark]: Boogie Preprocessor took 28.90ms. Allocated memory is still 142.6MB. Free memory was 93.3MB in the beginning and 91.2MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 16:46:00,769 INFO L158 Benchmark]: RCFGBuilder took 515.91ms. Allocated memory is still 142.6MB. Free memory was 91.2MB in the beginning and 58.7MB in the end (delta: 32.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-01-09 16:46:00,770 INFO L158 Benchmark]: TraceAbstraction took 1761.66ms. Allocated memory was 142.6MB in the beginning and 285.2MB in the end (delta: 142.6MB). Free memory was 57.6MB in the beginning and 231.3MB in the end (delta: -173.7MB). Peak memory consumption was 28.2MB. Max. memory is 16.1GB. [2025-01-09 16:46:00,770 INFO L158 Benchmark]: Witness Printer took 77.13ms. Allocated memory is still 285.2MB. Free memory was 231.3MB in the beginning and 225.6MB in the end (delta: 5.7MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 16:46:00,771 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory is still 126.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 171.63ms. Allocated memory is still 142.6MB. Free memory was 106.5MB in the beginning and 94.4MB in the end (delta: 12.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.48ms. Allocated memory is still 142.6MB. Free memory was 94.4MB in the beginning and 93.3MB in the end (delta: 1.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.90ms. Allocated memory is still 142.6MB. Free memory was 93.3MB in the beginning and 91.2MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 515.91ms. Allocated memory is still 142.6MB. Free memory was 91.2MB in the beginning and 58.7MB in the end (delta: 32.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1761.66ms. Allocated memory was 142.6MB in the beginning and 285.2MB in the end (delta: 142.6MB). Free memory was 57.6MB in the beginning and 231.3MB in the end (delta: -173.7MB). Peak memory consumption was 28.2MB. Max. memory is 16.1GB. * Witness Printer took 77.13ms. Allocated memory is still 285.2MB. Free memory was 231.3MB in the beginning and 225.6MB in the end (delta: 5.7MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 98]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 46 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.7s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 117 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 106 mSDsluCounter, 4 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 281 IncrementalHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 0 mSDtfsCounter, 281 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=92occurred in iteration=3, InterpolantAutomatonStates: 19, 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, 0.7s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 92 ConstructedInterpolants, 0 QuantifiedInterpolants, 402 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 1/1 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, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-01-09 16:46:00,787 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE