./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 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dbd0a32f8466e9a1ac86b6dfec2b7453fe6f40d8d953742d93d3d05c5ad7b7af --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 01:52:13,161 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 01:52:13,219 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 01:52:13,226 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 01:52:13,226 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 01:52:13,262 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 01:52:13,264 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 01:52:13,264 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 01:52:13,265 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 01:52:13,267 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 01:52:13,267 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 01:52:13,268 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 01:52:13,268 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 01:52:13,269 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 01:52:13,269 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 01:52:13,270 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 01:52:13,270 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 01:52:13,270 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 01:52:13,271 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 01:52:13,271 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 01:52:13,271 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 01:52:13,272 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 01:52:13,272 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 01:52:13,272 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 01:52:13,273 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 01:52:13,273 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 01:52:13,273 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 01:52:13,274 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 01:52:13,274 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 01:52:13,275 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 01:52:13,275 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 01:52:13,275 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 01:52:13,275 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:52:13,276 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 01:52:13,276 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 01:52:13,276 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 01:52:13,277 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 01:52:13,277 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 01:52:13,277 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 01:52:13,277 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 01:52:13,278 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 01:52:13,278 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 01:52:13,278 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbd0a32f8466e9a1ac86b6dfec2b7453fe6f40d8d953742d93d3d05c5ad7b7af [2024-11-19 01:52:13,504 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 01:52:13,532 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 01:52:13,535 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 01:52:13,536 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 01:52:13,537 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 01:52:13,538 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c [2024-11-19 01:52:14,983 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 01:52:15,185 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 01:52:15,186 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c [2024-11-19 01:52:15,193 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16ef38460/8adf58ba34ea45598266fe2701142993/FLAG51d74161e [2024-11-19 01:52:15,208 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16ef38460/8adf58ba34ea45598266fe2701142993 [2024-11-19 01:52:15,211 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 01:52:15,212 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 01:52:15,214 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 01:52:15,214 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 01:52:15,219 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 01:52:15,220 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:52:15" (1/1) ... [2024-11-19 01:52:15,221 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6729902e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:52:15, skipping insertion in model container [2024-11-19 01:52:15,223 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:52:15" (1/1) ... [2024-11-19 01:52:15,249 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 01:52:15,452 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c[2525,2538] [2024-11-19 01:52:15,460 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:52:15,467 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 01:52:15,492 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c[2525,2538] [2024-11-19 01:52:15,495 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:52:15,513 INFO L204 MainTranslator]: Completed translation [2024-11-19 01:52:15,514 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:52:15 WrapperNode [2024-11-19 01:52:15,514 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 01:52:15,515 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 01:52:15,515 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 01:52:15,515 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 01:52:15,522 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:52:15" (1/1) ... [2024-11-19 01:52:15,532 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:52:15" (1/1) ... [2024-11-19 01:52:15,553 INFO L138 Inliner]: procedures = 23, calls = 28, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 88 [2024-11-19 01:52:15,553 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 01:52:15,573 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 01:52:15,573 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 01:52:15,573 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 01:52:15,589 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:52:15" (1/1) ... [2024-11-19 01:52:15,590 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:52:15" (1/1) ... [2024-11-19 01:52:15,593 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:52:15" (1/1) ... [2024-11-19 01:52:15,609 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]. [2024-11-19 01:52:15,610 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:52:15" (1/1) ... [2024-11-19 01:52:15,611 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:52:15" (1/1) ... [2024-11-19 01:52:15,621 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:52:15" (1/1) ... [2024-11-19 01:52:15,626 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:52:15" (1/1) ... [2024-11-19 01:52:15,628 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:52:15" (1/1) ... [2024-11-19 01:52:15,641 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:52:15" (1/1) ... [2024-11-19 01:52:15,643 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 01:52:15,648 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 01:52:15,648 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 01:52:15,648 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 01:52:15,649 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:52:15" (1/1) ... [2024-11-19 01:52:15,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:52:15,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:52:15,688 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) [2024-11-19 01:52:15,690 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 [2024-11-19 01:52:15,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 01:52:15,726 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 01:52:15,726 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 01:52:15,726 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 01:52:15,726 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 01:52:15,727 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-19 01:52:15,727 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-19 01:52:15,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 01:52:15,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 01:52:15,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 01:52:15,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 01:52:15,727 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-19 01:52:15,728 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-19 01:52:15,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 01:52:15,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 01:52:15,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 01:52:15,728 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 01:52:15,728 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 01:52:15,730 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 01:52:15,828 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 01:52:15,830 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 01:52:16,083 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 01:52:16,083 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 01:52:16,264 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 01:52:16,264 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-19 01:52:16,265 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:52:16 BoogieIcfgContainer [2024-11-19 01:52:16,265 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 01:52:16,267 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 01:52:16,267 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 01:52:16,275 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 01:52:16,275 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:52:15" (1/3) ... [2024-11-19 01:52:16,276 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@680ad642 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:52:16, skipping insertion in model container [2024-11-19 01:52:16,276 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:52:15" (2/3) ... [2024-11-19 01:52:16,276 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@680ad642 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:52:16, skipping insertion in model container [2024-11-19 01:52:16,276 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:52:16" (3/3) ... [2024-11-19 01:52:16,278 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-min-le-max.wvr.c [2024-11-19 01:52:16,292 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 01:52:16,293 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 01:52:16,293 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 01:52:16,342 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-19 01:52:16,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 31 transitions, 83 flow [2024-11-19 01:52:16,410 INFO L124 PetriNetUnfolderBase]: 3/28 cut-off events. [2024-11-19 01:52:16,410 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-19 01:52:16,415 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. [2024-11-19 01:52:16,415 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 31 transitions, 83 flow [2024-11-19 01:52:16,419 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 27 transitions, 72 flow [2024-11-19 01:52:16,427 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 01:52:16,433 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;@712c3190, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 01:52:16,434 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-19 01:52:16,444 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 01:52:16,445 INFO L124 PetriNetUnfolderBase]: 3/26 cut-off events. [2024-11-19 01:52:16,445 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-19 01:52:16,445 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:52:16,446 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:52:16,446 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)] === [2024-11-19 01:52:16,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:52:16,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1755584056, now seen corresponding path program 1 times [2024-11-19 01:52:16,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:52:16,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068982641] [2024-11-19 01:52:16,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:52:16,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:52:16,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:52:16,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:52:16,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:52:16,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068982641] [2024-11-19 01:52:16,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068982641] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:52:16,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:52:16,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:52:16,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337415829] [2024-11-19 01:52:16,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:52:16,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:52:16,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:52:16,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:52:16,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:52:16,887 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-11-19 01:52:16,889 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) [2024-11-19 01:52:16,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:52:16,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-11-19 01:52:16,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:52:17,115 INFO L124 PetriNetUnfolderBase]: 317/538 cut-off events. [2024-11-19 01:52:17,115 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2024-11-19 01:52:17,119 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 2321 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. [2024-11-19 01:52:17,125 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 30 selfloop transitions, 3 changer transitions 0/38 dead transitions. [2024-11-19 01:52:17,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 38 transitions, 166 flow [2024-11-19 01:52:17,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:52:17,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 01:52:17,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 66 transitions. [2024-11-19 01:52:17,139 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.532258064516129 [2024-11-19 01:52:17,141 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 72 flow. Second operand 4 states and 66 transitions. [2024-11-19 01:52:17,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 38 transitions, 166 flow [2024-11-19 01:52:17,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 38 transitions, 150 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-19 01:52:17,151 INFO L231 Difference]: Finished difference. Result has 32 places, 28 transitions, 74 flow [2024-11-19 01:52:17,153 INFO L260 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} [2024-11-19 01:52:17,157 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, -2 predicate places. [2024-11-19 01:52:17,157 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 28 transitions, 74 flow [2024-11-19 01:52:17,158 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) [2024-11-19 01:52:17,158 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:52:17,158 INFO L204 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] [2024-11-19 01:52:17,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 01:52:17,159 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)] === [2024-11-19 01:52:17,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:52:17,160 INFO L85 PathProgramCache]: Analyzing trace with hash 282767181, now seen corresponding path program 1 times [2024-11-19 01:52:17,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:52:17,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115939108] [2024-11-19 01:52:17,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:52:17,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:52:17,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:52:17,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:52:17,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:52:17,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115939108] [2024-11-19 01:52:17,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115939108] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:52:17,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:52:17,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:52:17,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437854998] [2024-11-19 01:52:17,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:52:17,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:52:17,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:52:17,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:52:17,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:52:17,351 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-11-19 01:52:17,351 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) [2024-11-19 01:52:17,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:52:17,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-11-19 01:52:17,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:52:17,505 INFO L124 PetriNetUnfolderBase]: 465/792 cut-off events. [2024-11-19 01:52:17,506 INFO L125 PetriNetUnfolderBase]: For 167/167 co-relation queries the response was YES. [2024-11-19 01:52:17,509 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 3737 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. [2024-11-19 01:52:17,516 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 33 selfloop transitions, 3 changer transitions 0/41 dead transitions. [2024-11-19 01:52:17,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 41 transitions, 184 flow [2024-11-19 01:52:17,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:52:17,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 01:52:17,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 67 transitions. [2024-11-19 01:52:17,520 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5403225806451613 [2024-11-19 01:52:17,521 INFO L175 Difference]: Start difference. First operand has 32 places, 28 transitions, 74 flow. Second operand 4 states and 67 transitions. [2024-11-19 01:52:17,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 41 transitions, 184 flow [2024-11-19 01:52:17,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 41 transitions, 178 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 01:52:17,522 INFO L231 Difference]: Finished difference. Result has 34 places, 29 transitions, 84 flow [2024-11-19 01:52:17,523 INFO L260 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} [2024-11-19 01:52:17,523 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 0 predicate places. [2024-11-19 01:52:17,524 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 84 flow [2024-11-19 01:52:17,524 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) [2024-11-19 01:52:17,524 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:52:17,524 INFO L204 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] [2024-11-19 01:52:17,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 01:52:17,524 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)] === [2024-11-19 01:52:17,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:52:17,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1129487865, now seen corresponding path program 1 times [2024-11-19 01:52:17,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:52:17,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091990365] [2024-11-19 01:52:17,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:52:17,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:52:17,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:52:17,663 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:52:17,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:52:17,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091990365] [2024-11-19 01:52:17,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091990365] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:52:17,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:52:17,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 01:52:17,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954126729] [2024-11-19 01:52:17,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:52:17,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 01:52:17,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:52:17,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 01:52:17,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 01:52:17,672 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-11-19 01:52:17,673 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) [2024-11-19 01:52:17,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:52:17,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-11-19 01:52:17,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:52:17,829 INFO L124 PetriNetUnfolderBase]: 465/789 cut-off events. [2024-11-19 01:52:17,829 INFO L125 PetriNetUnfolderBase]: For 273/273 co-relation queries the response was YES. [2024-11-19 01:52:17,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1892 conditions, 789 events. 465/789 cut-off events. For 273/273 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3751 event pairs, 388 based on Foata normal form. 1/764 useless extension candidates. Maximal degree in co-relation 457. Up to 712 conditions per place. [2024-11-19 01:52:17,835 INFO L140 encePairwiseOnDemand]: 28/31 looper letters, 23 selfloop transitions, 2 changer transitions 0/30 dead transitions. [2024-11-19 01:52:17,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 30 transitions, 136 flow [2024-11-19 01:52:17,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 01:52:17,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 01:52:17,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 48 transitions. [2024-11-19 01:52:17,837 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5161290322580645 [2024-11-19 01:52:17,837 INFO L175 Difference]: Start difference. First operand has 34 places, 29 transitions, 84 flow. Second operand 3 states and 48 transitions. [2024-11-19 01:52:17,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 30 transitions, 136 flow [2024-11-19 01:52:17,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 30 transitions, 132 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 01:52:17,839 INFO L231 Difference]: Finished difference. Result has 35 places, 30 transitions, 92 flow [2024-11-19 01:52:17,839 INFO L260 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} [2024-11-19 01:52:17,840 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 1 predicate places. [2024-11-19 01:52:17,840 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 92 flow [2024-11-19 01:52:17,840 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) [2024-11-19 01:52:17,840 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:52:17,841 INFO L204 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] [2024-11-19 01:52:17,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 01:52:17,841 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)] === [2024-11-19 01:52:17,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:52:17,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1450538109, now seen corresponding path program 1 times [2024-11-19 01:52:17,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:52:17,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601564411] [2024-11-19 01:52:17,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:52:17,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:52:17,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:52:18,279 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:52:18,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:52:18,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601564411] [2024-11-19 01:52:18,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601564411] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:52:18,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239443126] [2024-11-19 01:52:18,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:52:18,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:52:18,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:52:18,284 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:52:18,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 01:52:18,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:52:18,378 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-19 01:52:18,383 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:52:18,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 01:52:18,647 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-19 01:52:18,686 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:52:18,687 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:52:19,085 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:52:19,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239443126] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:52:19,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:52:19,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 7] total 16 [2024-11-19 01:52:19,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551999617] [2024-11-19 01:52:19,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:52:19,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 01:52:19,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:52:19,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 01:52:19,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2024-11-19 01:52:19,135 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-11-19 01:52:19,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 92 flow. Second operand has 16 states, 16 states have (on average 11.0625) internal successors, (177), 16 states have internal predecessors, (177), 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) [2024-11-19 01:52:19,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:52:19,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-11-19 01:52:19,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:52:20,094 INFO L124 PetriNetUnfolderBase]: 1150/1845 cut-off events. [2024-11-19 01:52:20,095 INFO L125 PetriNetUnfolderBase]: For 466/466 co-relation queries the response was YES. [2024-11-19 01:52:20,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4326 conditions, 1845 events. 1150/1845 cut-off events. For 466/466 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 9202 event pairs, 54 based on Foata normal form. 2/1841 useless extension candidates. Maximal degree in co-relation 4313. Up to 281 conditions per place. [2024-11-19 01:52:20,101 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 0 selfloop transitions, 0 changer transitions 190/190 dead transitions. [2024-11-19 01:52:20,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 190 transitions, 921 flow [2024-11-19 01:52:20,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-19 01:52:20,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-19 01:52:20,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 357 transitions. [2024-11-19 01:52:20,105 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4798387096774194 [2024-11-19 01:52:20,105 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 92 flow. Second operand 24 states and 357 transitions. [2024-11-19 01:52:20,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 190 transitions, 921 flow [2024-11-19 01:52:20,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 190 transitions, 917 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-19 01:52:20,111 INFO L231 Difference]: Finished difference. Result has 55 places, 0 transitions, 0 flow [2024-11-19 01:52:20,111 INFO L260 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=24, PETRI_FLOW=0, PETRI_PLACES=55, PETRI_TRANSITIONS=0} [2024-11-19 01:52:20,113 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 21 predicate places. [2024-11-19 01:52:20,113 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 0 transitions, 0 flow [2024-11-19 01:52:20,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.0625) internal successors, (177), 16 states have internal predecessors, (177), 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) [2024-11-19 01:52:20,116 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-11-19 01:52:20,117 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2024-11-19 01:52:20,117 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-11-19 01:52:20,117 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-11-19 01:52:20,134 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 01:52:20,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:52:20,319 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-19 01:52:20,327 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-19 01:52:20,328 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-19 01:52:20,333 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 01:52:20 BasicIcfg [2024-11-19 01:52:20,334 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-19 01:52:20,335 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-19 01:52:20,335 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-19 01:52:20,335 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-19 01:52:20,336 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:52:16" (3/4) ... [2024-11-19 01:52:20,338 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-19 01:52:20,343 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-19 01:52:20,343 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-19 01:52:20,343 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2024-11-19 01:52:20,350 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 89 nodes and edges [2024-11-19 01:52:20,351 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2024-11-19 01:52:20,351 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2024-11-19 01:52:20,351 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-19 01:52:20,446 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-19 01:52:20,447 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-19 01:52:20,447 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-19 01:52:20,447 INFO L158 Benchmark]: Toolchain (without parser) took 5235.26ms. Allocated memory was 172.0MB in the beginning and 245.4MB in the end (delta: 73.4MB). Free memory was 104.5MB in the beginning and 130.1MB in the end (delta: -25.5MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2024-11-19 01:52:20,448 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 172.0MB. Free memory is still 129.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-19 01:52:20,448 INFO L158 Benchmark]: CACSL2BoogieTranslator took 300.31ms. Allocated memory is still 172.0MB. Free memory was 104.3MB in the beginning and 90.9MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-19 01:52:20,448 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.24ms. Allocated memory is still 172.0MB. Free memory was 90.9MB in the beginning and 144.8MB in the end (delta: -53.9MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. [2024-11-19 01:52:20,449 INFO L158 Benchmark]: Boogie Preprocessor took 71.05ms. Allocated memory is still 172.0MB. Free memory was 144.8MB in the beginning and 142.7MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-19 01:52:20,449 INFO L158 Benchmark]: RCFGBuilder took 617.43ms. Allocated memory is still 172.0MB. Free memory was 142.7MB in the beginning and 106.2MB in the end (delta: 36.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-11-19 01:52:20,449 INFO L158 Benchmark]: TraceAbstraction took 4067.61ms. Allocated memory was 172.0MB in the beginning and 245.4MB in the end (delta: 73.4MB). Free memory was 106.2MB in the beginning and 135.3MB in the end (delta: -29.1MB). Peak memory consumption was 46.0MB. Max. memory is 16.1GB. [2024-11-19 01:52:20,449 INFO L158 Benchmark]: Witness Printer took 112.07ms. Allocated memory is still 245.4MB. Free memory was 134.3MB in the beginning and 130.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-19 01:52:20,451 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 172.0MB. Free memory is still 129.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 300.31ms. Allocated memory is still 172.0MB. Free memory was 104.3MB in the beginning and 90.9MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.24ms. Allocated memory is still 172.0MB. Free memory was 90.9MB in the beginning and 144.8MB in the end (delta: -53.9MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 71.05ms. Allocated memory is still 172.0MB. Free memory was 144.8MB in the beginning and 142.7MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 617.43ms. Allocated memory is still 172.0MB. Free memory was 142.7MB in the beginning and 106.2MB in the end (delta: 36.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 4067.61ms. Allocated memory was 172.0MB in the beginning and 245.4MB in the end (delta: 73.4MB). Free memory was 106.2MB in the beginning and 135.3MB in the end (delta: -29.1MB). Peak memory consumption was 46.0MB. Max. memory is 16.1GB. * Witness Printer took 112.07ms. Allocated memory is still 245.4MB. Free memory was 134.3MB in the beginning and 130.1MB 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: 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: 3.9s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 230 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 217 mSDsluCounter, 79 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 79 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 698 IncrementalHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 0 mSDtfsCounter, 698 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 91 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=92occurred in iteration=3, InterpolantAutomatonStates: 35, 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, 1.6s InterpolantComputationTime, 123 NumberOfCodeBlocks, 123 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 144 ConstructedInterpolants, 0 QuantifiedInterpolants, 1116 SizeOfPredicates, 11 NumberOfNonLiveVariables, 181 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 5/12 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-19 01:52:20,475 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE