./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-buffer-series.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/popl20-more-buffer-series.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version bcb38a6f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-buffer-series.wvr.c ./goblint.2024-05-21_14-57-05.files/protection/popl20-more-buffer-series.wvr.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-bcb38a6-m [2024-06-04 15:49:26,176 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-04 15:49:26,235 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-04 15:49:26,244 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-04 15:49:26,244 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-04 15:49:26,270 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-04 15:49:26,271 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-04 15:49:26,271 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-04 15:49:26,272 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-04 15:49:26,275 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-04 15:49:26,275 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-04 15:49:26,275 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-04 15:49:26,276 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-04 15:49:26,277 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-04 15:49:26,278 INFO L153 SettingsManager]: * Use SBE=true [2024-06-04 15:49:26,278 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-04 15:49:26,278 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-04 15:49:26,278 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-04 15:49:26,278 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-04 15:49:26,279 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-04 15:49:26,279 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-04 15:49:26,279 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-04 15:49:26,279 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-04 15:49:26,280 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-04 15:49:26,280 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-04 15:49:26,280 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-04 15:49:26,280 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-04 15:49:26,280 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-04 15:49:26,281 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-04 15:49:26,281 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-04 15:49:26,282 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-04 15:49:26,282 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-04 15:49:26,282 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 15:49:26,283 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-04 15:49:26,283 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-04 15:49:26,283 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-04 15:49:26,283 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-04 15:49:26,283 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-04 15:49:26,283 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-04 15:49:26,284 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-04 15:49:26,284 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-04 15:49:26,284 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-04 15:49:26,284 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-04 15:49:26,284 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-04 15:49:26,479 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-04 15:49:26,493 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-04 15:49:26,495 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-04 15:49:26,496 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-04 15:49:26,496 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-04 15:49:26,497 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/popl20-more-buffer-series.wvr.yml/witness.yml [2024-06-04 15:49:26,556 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-04 15:49:26,556 INFO L274 PluginConnector]: CDTParser initialized [2024-06-04 15:49:26,556 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-buffer-series.wvr.c [2024-06-04 15:49:27,585 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-04 15:49:27,731 INFO L384 CDTParser]: Found 1 translation units. [2024-06-04 15:49:27,732 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-series.wvr.c [2024-06-04 15:49:27,738 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b11181f15/86861c4006204a40ae7f387b39794572/FLAGd52f43077 [2024-06-04 15:49:27,752 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b11181f15/86861c4006204a40ae7f387b39794572 [2024-06-04 15:49:27,754 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-04 15:49:27,755 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-04 15:49:27,758 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-04 15:49:27,759 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-04 15:49:27,762 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-04 15:49:27,763 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 03:49:26" (1/2) ... [2024-06-04 15:49:27,764 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d812cc1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:49:27, skipping insertion in model container [2024-06-04 15:49:27,764 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 03:49:26" (1/2) ... [2024-06-04 15:49:27,765 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4fe0738f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:49:27, skipping insertion in model container [2024-06-04 15:49:27,765 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 03:49:27" (2/2) ... [2024-06-04 15:49:27,765 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d812cc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:49:27, skipping insertion in model container [2024-06-04 15:49:27,766 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 03:49:27" (2/2) ... [2024-06-04 15:49:27,767 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-04 15:49:27,790 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-04 15:49:27,791 INFO L97 edCorrectnessWitness]: Location invariant before [L149-L149] (! multithreaded || 0 <= j) && (! multithreaded || 0 <= i) [2024-06-04 15:49:27,791 INFO L97 edCorrectnessWitness]: Location invariant before [L147-L147] (! multithreaded || 0 <= j) && (! multithreaded || 0 <= i) [2024-06-04 15:49:27,792 INFO L97 edCorrectnessWitness]: Location invariant before [L148-L148] (! multithreaded || 0 <= j) && (! multithreaded || 0 <= i) [2024-06-04 15:49:27,792 INFO L97 edCorrectnessWitness]: Location invariant before [L146-L146] (! multithreaded || 0 <= j) && (! multithreaded || 0 <= i) [2024-06-04 15:49:27,792 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-04 15:49:27,793 INFO L106 edCorrectnessWitness]: ghost_update [L145-L145] multithreaded = 1; [2024-06-04 15:49:27,812 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-04 15:49:28,010 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 15:49:28,020 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-04 15:49:28,098 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 15:49:28,115 INFO L206 MainTranslator]: Completed translation [2024-06-04 15:49:28,117 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:49:28 WrapperNode [2024-06-04 15:49:28,117 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-04 15:49:28,118 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-04 15:49:28,119 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-04 15:49:28,119 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-04 15:49:28,124 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:49:28" (1/1) ... [2024-06-04 15:49:28,141 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:49:28" (1/1) ... [2024-06-04 15:49:28,182 INFO L138 Inliner]: procedures = 26, calls = 68, calls flagged for inlining = 23, calls inlined = 29, statements flattened = 349 [2024-06-04 15:49:28,183 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-04 15:49:28,184 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-04 15:49:28,184 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-04 15:49:28,185 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-04 15:49:28,193 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:49:28" (1/1) ... [2024-06-04 15:49:28,194 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:49:28" (1/1) ... [2024-06-04 15:49:28,207 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:49:28" (1/1) ... [2024-06-04 15:49:28,230 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [10, 2]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [0, 2]. The 3 writes are split as follows [3, 0]. [2024-06-04 15:49:28,231 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:49:28" (1/1) ... [2024-06-04 15:49:28,231 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:49:28" (1/1) ... [2024-06-04 15:49:28,241 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:49:28" (1/1) ... [2024-06-04 15:49:28,244 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:49:28" (1/1) ... [2024-06-04 15:49:28,246 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:49:28" (1/1) ... [2024-06-04 15:49:28,261 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:49:28" (1/1) ... [2024-06-04 15:49:28,264 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-04 15:49:28,265 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-04 15:49:28,265 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-04 15:49:28,265 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-04 15:49:28,266 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:49:28" (1/1) ... [2024-06-04 15:49:28,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 15:49:28,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 15:49:28,306 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) [2024-06-04 15:49:28,321 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 [2024-06-04 15:49:28,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-04 15:49:28,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-04 15:49:28,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-04 15:49:28,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-04 15:49:28,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-04 15:49:28,347 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-04 15:49:28,347 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-04 15:49:28,347 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-04 15:49:28,348 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-04 15:49:28,348 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-06-04 15:49:28,348 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-06-04 15:49:28,348 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-06-04 15:49:28,348 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-06-04 15:49:28,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-04 15:49:28,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-04 15:49:28,351 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-04 15:49:28,351 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-04 15:49:28,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-06-04 15:49:28,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-04 15:49:28,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-04 15:49:28,353 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-04 15:49:28,507 INFO L244 CfgBuilder]: Building ICFG [2024-06-04 15:49:28,510 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-04 15:49:28,913 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-04 15:49:28,913 INFO L293 CfgBuilder]: Performing block encoding [2024-06-04 15:49:29,203 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-04 15:49:29,203 INFO L320 CfgBuilder]: Removed 7 assume(true) statements. [2024-06-04 15:49:29,204 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 03:49:29 BoogieIcfgContainer [2024-06-04 15:49:29,204 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-04 15:49:29,207 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-04 15:49:29,207 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-04 15:49:29,209 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-04 15:49:29,209 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 03:49:26" (1/4) ... [2024-06-04 15:49:29,210 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a7e8c36 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 03:49:29, skipping insertion in model container [2024-06-04 15:49:29,210 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.06 03:49:27" (2/4) ... [2024-06-04 15:49:29,211 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a7e8c36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 03:49:29, skipping insertion in model container [2024-06-04 15:49:29,211 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:49:28" (3/4) ... [2024-06-04 15:49:29,211 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a7e8c36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 03:49:29, skipping insertion in model container [2024-06-04 15:49:29,211 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 03:49:29" (4/4) ... [2024-06-04 15:49:29,212 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series.wvr.c [2024-06-04 15:49:29,226 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-04 15:49:29,226 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-04 15:49:29,226 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-04 15:49:29,276 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-06-04 15:49:29,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 60 transitions, 148 flow [2024-06-04 15:49:29,363 INFO L124 PetriNetUnfolderBase]: 7/56 cut-off events. [2024-06-04 15:49:29,364 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-04 15:49:29,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 56 events. 7/56 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 80 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2024-06-04 15:49:29,368 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 60 transitions, 148 flow [2024-06-04 15:49:29,371 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 54 transitions, 129 flow [2024-06-04 15:49:29,383 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-04 15:49:29,392 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@371df924, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-04 15:49:29,392 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-04 15:49:29,399 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-04 15:49:29,399 INFO L124 PetriNetUnfolderBase]: 3/13 cut-off events. [2024-06-04 15:49:29,399 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 15:49:29,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:49:29,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:49:29,401 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:49:29,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:49:29,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1716988466, now seen corresponding path program 1 times [2024-06-04 15:49:29,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:49:29,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159802828] [2024-06-04 15:49:29,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:49:29,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:49:29,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:49:29,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:49:29,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:49:29,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159802828] [2024-06-04 15:49:29,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159802828] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:49:29,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:49:29,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-04 15:49:29,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535063131] [2024-06-04 15:49:29,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:49:29,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-04 15:49:29,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:49:29,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-04 15:49:29,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-04 15:49:29,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 60 [2024-06-04 15:49:29,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 54 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2024-06-04 15:49:29,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:49:29,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 60 [2024-06-04 15:49:29,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:49:30,472 INFO L124 PetriNetUnfolderBase]: 3047/4723 cut-off events. [2024-06-04 15:49:30,472 INFO L125 PetriNetUnfolderBase]: For 222/222 co-relation queries the response was YES. [2024-06-04 15:49:30,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9062 conditions, 4723 events. 3047/4723 cut-off events. For 222/222 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 31184 event pairs, 743 based on Foata normal form. 81/4381 useless extension candidates. Maximal degree in co-relation 8387. Up to 3090 conditions per place. [2024-06-04 15:49:30,539 INFO L140 encePairwiseOnDemand]: 53/60 looper letters, 55 selfloop transitions, 3 changer transitions 2/77 dead transitions. [2024-06-04 15:49:30,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 77 transitions, 313 flow [2024-06-04 15:49:30,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-04 15:49:30,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-04 15:49:30,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 127 transitions. [2024-06-04 15:49:30,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7055555555555556 [2024-06-04 15:49:30,550 INFO L175 Difference]: Start difference. First operand has 60 places, 54 transitions, 129 flow. Second operand 3 states and 127 transitions. [2024-06-04 15:49:30,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 77 transitions, 313 flow [2024-06-04 15:49:30,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 77 transitions, 289 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-04 15:49:30,559 INFO L231 Difference]: Finished difference. Result has 56 places, 56 transitions, 141 flow [2024-06-04 15:49:30,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=141, PETRI_PLACES=56, PETRI_TRANSITIONS=56} [2024-06-04 15:49:30,563 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -4 predicate places. [2024-06-04 15:49:30,563 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 56 transitions, 141 flow [2024-06-04 15:49:30,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2024-06-04 15:49:30,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:49:30,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:49:30,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-04 15:49:30,564 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:49:30,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:49:30,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1383305497, now seen corresponding path program 1 times [2024-06-04 15:49:30,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:49:30,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938555580] [2024-06-04 15:49:30,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:49:30,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:49:30,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:49:30,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:49:30,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:49:30,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938555580] [2024-06-04 15:49:30,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938555580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:49:30,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:49:30,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-04 15:49:30,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349161306] [2024-06-04 15:49:30,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:49:30,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-04 15:49:30,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:49:30,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-04 15:49:30,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-04 15:49:30,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 60 [2024-06-04 15:49:30,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 56 transitions, 141 flow. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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) [2024-06-04 15:49:30,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:49:30,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 60 [2024-06-04 15:49:30,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:49:31,207 INFO L124 PetriNetUnfolderBase]: 3328/5170 cut-off events. [2024-06-04 15:49:31,207 INFO L125 PetriNetUnfolderBase]: For 555/555 co-relation queries the response was YES. [2024-06-04 15:49:31,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10923 conditions, 5170 events. 3328/5170 cut-off events. For 555/555 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 35180 event pairs, 728 based on Foata normal form. 120/5013 useless extension candidates. Maximal degree in co-relation 2204. Up to 2412 conditions per place. [2024-06-04 15:49:31,236 INFO L140 encePairwiseOnDemand]: 53/60 looper letters, 71 selfloop transitions, 4 changer transitions 4/96 dead transitions. [2024-06-04 15:49:31,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 96 transitions, 394 flow [2024-06-04 15:49:31,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-04 15:49:31,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-04 15:49:31,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 167 transitions. [2024-06-04 15:49:31,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6958333333333333 [2024-06-04 15:49:31,242 INFO L175 Difference]: Start difference. First operand has 56 places, 56 transitions, 141 flow. Second operand 4 states and 167 transitions. [2024-06-04 15:49:31,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 96 transitions, 394 flow [2024-06-04 15:49:31,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 96 transitions, 391 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-04 15:49:31,249 INFO L231 Difference]: Finished difference. Result has 58 places, 56 transitions, 156 flow [2024-06-04 15:49:31,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=156, PETRI_PLACES=58, PETRI_TRANSITIONS=56} [2024-06-04 15:49:31,250 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -2 predicate places. [2024-06-04 15:49:31,254 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 56 transitions, 156 flow [2024-06-04 15:49:31,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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) [2024-06-04 15:49:31,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:49:31,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:49:31,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-04 15:49:31,255 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:49:31,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:49:31,256 INFO L85 PathProgramCache]: Analyzing trace with hash -2109485470, now seen corresponding path program 1 times [2024-06-04 15:49:31,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:49:31,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379780878] [2024-06-04 15:49:31,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:49:31,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:49:31,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:49:31,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:49:31,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:49:31,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379780878] [2024-06-04 15:49:31,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379780878] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:49:31,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:49:31,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-04 15:49:31,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52967777] [2024-06-04 15:49:31,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:49:31,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-04 15:49:31,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:49:31,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-04 15:49:31,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-04 15:49:31,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 60 [2024-06-04 15:49:31,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 56 transitions, 156 flow. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:49:31,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:49:31,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 60 [2024-06-04 15:49:31,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:49:31,959 INFO L124 PetriNetUnfolderBase]: 3642/5784 cut-off events. [2024-06-04 15:49:31,960 INFO L125 PetriNetUnfolderBase]: For 1977/1977 co-relation queries the response was YES. [2024-06-04 15:49:31,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12734 conditions, 5784 events. 3642/5784 cut-off events. For 1977/1977 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 41181 event pairs, 987 based on Foata normal form. 117/5619 useless extension candidates. Maximal degree in co-relation 4987. Up to 2909 conditions per place. [2024-06-04 15:49:31,992 INFO L140 encePairwiseOnDemand]: 54/60 looper letters, 70 selfloop transitions, 4 changer transitions 6/97 dead transitions. [2024-06-04 15:49:31,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 97 transitions, 417 flow [2024-06-04 15:49:31,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-04 15:49:31,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-04 15:49:31,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 166 transitions. [2024-06-04 15:49:31,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6916666666666667 [2024-06-04 15:49:31,994 INFO L175 Difference]: Start difference. First operand has 58 places, 56 transitions, 156 flow. Second operand 4 states and 166 transitions. [2024-06-04 15:49:31,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 97 transitions, 417 flow [2024-06-04 15:49:31,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 97 transitions, 411 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-04 15:49:31,998 INFO L231 Difference]: Finished difference. Result has 60 places, 57 transitions, 172 flow [2024-06-04 15:49:31,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=172, PETRI_PLACES=60, PETRI_TRANSITIONS=57} [2024-06-04 15:49:31,999 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 0 predicate places. [2024-06-04 15:49:31,999 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 57 transitions, 172 flow [2024-06-04 15:49:31,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:49:31,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:49:31,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:49:32,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-04 15:49:32,000 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:49:32,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:49:32,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1985784145, now seen corresponding path program 1 times [2024-06-04 15:49:32,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:49:32,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821978494] [2024-06-04 15:49:32,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:49:32,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:49:32,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:49:32,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:49:32,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:49:32,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821978494] [2024-06-04 15:49:32,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821978494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:49:32,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:49:32,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-04 15:49:32,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708314872] [2024-06-04 15:49:32,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:49:32,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-04 15:49:32,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:49:32,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-04 15:49:32,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-04 15:49:32,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 60 [2024-06-04 15:49:32,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 57 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 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) [2024-06-04 15:49:32,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:49:32,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 60 [2024-06-04 15:49:32,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:49:32,676 INFO L124 PetriNetUnfolderBase]: 4184/6954 cut-off events. [2024-06-04 15:49:32,676 INFO L125 PetriNetUnfolderBase]: For 3367/3497 co-relation queries the response was YES. [2024-06-04 15:49:32,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15305 conditions, 6954 events. 4184/6954 cut-off events. For 3367/3497 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 52445 event pairs, 3418 based on Foata normal form. 232/6703 useless extension candidates. Maximal degree in co-relation 8773. Up to 4786 conditions per place. [2024-06-04 15:49:32,708 INFO L140 encePairwiseOnDemand]: 51/60 looper letters, 36 selfloop transitions, 2 changer transitions 33/91 dead transitions. [2024-06-04 15:49:32,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 91 transitions, 399 flow [2024-06-04 15:49:32,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 15:49:32,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 15:49:32,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 193 transitions. [2024-06-04 15:49:32,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6433333333333333 [2024-06-04 15:49:32,710 INFO L175 Difference]: Start difference. First operand has 60 places, 57 transitions, 172 flow. Second operand 5 states and 193 transitions. [2024-06-04 15:49:32,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 91 transitions, 399 flow [2024-06-04 15:49:32,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 91 transitions, 392 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-04 15:49:32,713 INFO L231 Difference]: Finished difference. Result has 65 places, 58 transitions, 190 flow [2024-06-04 15:49:32,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=190, PETRI_PLACES=65, PETRI_TRANSITIONS=58} [2024-06-04 15:49:32,714 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 5 predicate places. [2024-06-04 15:49:32,714 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 58 transitions, 190 flow [2024-06-04 15:49:32,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 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) [2024-06-04 15:49:32,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:49:32,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:49:32,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-04 15:49:32,715 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:49:32,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:49:32,715 INFO L85 PathProgramCache]: Analyzing trace with hash -527325202, now seen corresponding path program 1 times [2024-06-04 15:49:32,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:49:32,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230541463] [2024-06-04 15:49:32,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:49:32,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:49:32,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:49:32,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-04 15:49:32,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:49:32,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230541463] [2024-06-04 15:49:32,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230541463] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:49:32,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:49:32,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 15:49:32,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474724851] [2024-06-04 15:49:32,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:49:32,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-04 15:49:32,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:49:32,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-04 15:49:32,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-04 15:49:32,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 60 [2024-06-04 15:49:32,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 58 transitions, 190 flow. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 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) [2024-06-04 15:49:32,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:49:32,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 60 [2024-06-04 15:49:32,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:49:33,426 INFO L124 PetriNetUnfolderBase]: 4235/7085 cut-off events. [2024-06-04 15:49:33,426 INFO L125 PetriNetUnfolderBase]: For 3639/3769 co-relation queries the response was YES. [2024-06-04 15:49:33,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16392 conditions, 7085 events. 4235/7085 cut-off events. For 3639/3769 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 53701 event pairs, 3480 based on Foata normal form. 191/6790 useless extension candidates. Maximal degree in co-relation 16375. Up to 4787 conditions per place. [2024-06-04 15:49:33,460 INFO L140 encePairwiseOnDemand]: 53/60 looper letters, 37 selfloop transitions, 2 changer transitions 29/88 dead transitions. [2024-06-04 15:49:33,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 88 transitions, 418 flow [2024-06-04 15:49:33,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 15:49:33,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 15:49:33,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 189 transitions. [2024-06-04 15:49:33,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.63 [2024-06-04 15:49:33,461 INFO L175 Difference]: Start difference. First operand has 65 places, 58 transitions, 190 flow. Second operand 5 states and 189 transitions. [2024-06-04 15:49:33,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 88 transitions, 418 flow [2024-06-04 15:49:33,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 88 transitions, 394 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-06-04 15:49:33,466 INFO L231 Difference]: Finished difference. Result has 68 places, 59 transitions, 198 flow [2024-06-04 15:49:33,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=198, PETRI_PLACES=68, PETRI_TRANSITIONS=59} [2024-06-04 15:49:33,467 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 8 predicate places. [2024-06-04 15:49:33,467 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 59 transitions, 198 flow [2024-06-04 15:49:33,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 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) [2024-06-04 15:49:33,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:49:33,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:49:33,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-04 15:49:33,468 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:49:33,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:49:33,469 INFO L85 PathProgramCache]: Analyzing trace with hash 430605601, now seen corresponding path program 1 times [2024-06-04 15:49:33,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:49:33,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733426896] [2024-06-04 15:49:33,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:49:33,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:49:33,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:49:33,555 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-04 15:49:33,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:49:33,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733426896] [2024-06-04 15:49:33,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733426896] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:49:33,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:49:33,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-04 15:49:33,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94095510] [2024-06-04 15:49:33,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:49:33,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-04 15:49:33,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:49:33,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-04 15:49:33,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-04 15:49:33,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 60 [2024-06-04 15:49:33,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 59 transitions, 198 flow. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 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) [2024-06-04 15:49:33,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:49:33,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 60 [2024-06-04 15:49:33,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:49:34,417 INFO L124 PetriNetUnfolderBase]: 4448/7099 cut-off events. [2024-06-04 15:49:34,417 INFO L125 PetriNetUnfolderBase]: For 4665/4665 co-relation queries the response was YES. [2024-06-04 15:49:34,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17844 conditions, 7099 events. 4448/7099 cut-off events. For 4665/4665 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 52106 event pairs, 978 based on Foata normal form. 117/6932 useless extension candidates. Maximal degree in co-relation 17820. Up to 2807 conditions per place. [2024-06-04 15:49:34,449 INFO L140 encePairwiseOnDemand]: 54/60 looper letters, 93 selfloop transitions, 4 changer transitions 5/119 dead transitions. [2024-06-04 15:49:34,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 119 transitions, 577 flow [2024-06-04 15:49:34,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 15:49:34,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 15:49:34,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 207 transitions. [2024-06-04 15:49:34,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.69 [2024-06-04 15:49:34,451 INFO L175 Difference]: Start difference. First operand has 68 places, 59 transitions, 198 flow. Second operand 5 states and 207 transitions. [2024-06-04 15:49:34,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 119 transitions, 577 flow [2024-06-04 15:49:34,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 119 transitions, 569 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-04 15:49:34,454 INFO L231 Difference]: Finished difference. Result has 69 places, 59 transitions, 205 flow [2024-06-04 15:49:34,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=205, PETRI_PLACES=69, PETRI_TRANSITIONS=59} [2024-06-04 15:49:34,457 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 9 predicate places. [2024-06-04 15:49:34,457 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 59 transitions, 205 flow [2024-06-04 15:49:34,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 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) [2024-06-04 15:49:34,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:49:34,457 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:49:34,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-04 15:49:34,458 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:49:34,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:49:34,458 INFO L85 PathProgramCache]: Analyzing trace with hash 430612111, now seen corresponding path program 2 times [2024-06-04 15:49:34,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:49:34,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88082501] [2024-06-04 15:49:34,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:49:34,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:49:34,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:49:34,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-04 15:49:34,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:49:34,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88082501] [2024-06-04 15:49:34,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88082501] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:49:34,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:49:34,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-04 15:49:34,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369158210] [2024-06-04 15:49:34,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:49:34,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-04 15:49:34,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:49:34,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-04 15:49:34,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-04 15:49:34,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 60 [2024-06-04 15:49:34,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 59 transitions, 205 flow. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 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) [2024-06-04 15:49:34,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:49:34,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 60 [2024-06-04 15:49:34,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:49:35,256 INFO L124 PetriNetUnfolderBase]: 4088/6604 cut-off events. [2024-06-04 15:49:35,256 INFO L125 PetriNetUnfolderBase]: For 5511/5511 co-relation queries the response was YES. [2024-06-04 15:49:35,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16512 conditions, 6604 events. 4088/6604 cut-off events. For 5511/5511 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 48524 event pairs, 831 based on Foata normal form. 117/6475 useless extension candidates. Maximal degree in co-relation 16487. Up to 2342 conditions per place. [2024-06-04 15:49:35,272 INFO L140 encePairwiseOnDemand]: 54/60 looper letters, 0 selfloop transitions, 0 changer transitions 116/116 dead transitions. [2024-06-04 15:49:35,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 116 transitions, 548 flow [2024-06-04 15:49:35,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 15:49:35,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 15:49:35,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 204 transitions. [2024-06-04 15:49:35,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.68 [2024-06-04 15:49:35,273 INFO L175 Difference]: Start difference. First operand has 69 places, 59 transitions, 205 flow. Second operand 5 states and 204 transitions. [2024-06-04 15:49:35,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 116 transitions, 548 flow [2024-06-04 15:49:35,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 116 transitions, 540 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-04 15:49:35,280 INFO L231 Difference]: Finished difference. Result has 66 places, 0 transitions, 0 flow [2024-06-04 15:49:35,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=66, PETRI_TRANSITIONS=0} [2024-06-04 15:49:35,280 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 6 predicate places. [2024-06-04 15:49:35,281 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 0 transitions, 0 flow [2024-06-04 15:49:35,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 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) [2024-06-04 15:49:35,283 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 8 remaining) [2024-06-04 15:49:35,283 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 8 remaining) [2024-06-04 15:49:35,283 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 8 remaining) [2024-06-04 15:49:35,283 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 8 remaining) [2024-06-04 15:49:35,283 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 8 remaining) [2024-06-04 15:49:35,284 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 8 remaining) [2024-06-04 15:49:35,284 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2024-06-04 15:49:35,284 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2024-06-04 15:49:35,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-04 15:49:35,284 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2024-06-04 15:49:35,286 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-04 15:49:35,286 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-04 15:49:35,289 INFO L507 ceAbstractionStarter]: Automizer considered 4 witness invariants [2024-06-04 15:49:35,289 INFO L508 ceAbstractionStarter]: WitnessConsidered=4 [2024-06-04 15:49:35,290 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.06 03:49:35 BasicIcfg [2024-06-04 15:49:35,290 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-04 15:49:35,290 INFO L158 Benchmark]: Toolchain (without parser) took 7535.84ms. Allocated memory was 144.7MB in the beginning and 880.8MB in the end (delta: 736.1MB). Free memory was 83.8MB in the beginning and 613.6MB in the end (delta: -529.8MB). Peak memory consumption was 560.0MB. Max. memory is 16.1GB. [2024-06-04 15:49:35,290 INFO L158 Benchmark]: Witness Parser took 0.16ms. Allocated memory is still 144.7MB. Free memory is still 104.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-04 15:49:35,291 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 144.7MB. Free memory is still 100.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-04 15:49:35,291 INFO L158 Benchmark]: CACSL2BoogieTranslator took 359.10ms. Allocated memory is still 144.7MB. Free memory was 83.8MB in the beginning and 67.0MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-06-04 15:49:35,291 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.56ms. Allocated memory is still 144.7MB. Free memory was 67.0MB in the beginning and 64.2MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-04 15:49:35,291 INFO L158 Benchmark]: Boogie Preprocessor took 80.12ms. Allocated memory is still 144.7MB. Free memory was 64.2MB in the beginning and 114.3MB in the end (delta: -50.2MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. [2024-06-04 15:49:35,292 INFO L158 Benchmark]: RCFGBuilder took 939.35ms. Allocated memory was 144.7MB in the beginning and 195.0MB in the end (delta: 50.3MB). Free memory was 114.3MB in the beginning and 66.5MB in the end (delta: 47.8MB). Peak memory consumption was 101.7MB. Max. memory is 16.1GB. [2024-06-04 15:49:35,292 INFO L158 Benchmark]: TraceAbstraction took 6083.41ms. Allocated memory was 195.0MB in the beginning and 880.8MB in the end (delta: 685.8MB). Free memory was 65.4MB in the beginning and 613.6MB in the end (delta: -548.1MB). Peak memory consumption was 491.0MB. Max. memory is 16.1GB. [2024-06-04 15:49:35,293 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.16ms. Allocated memory is still 144.7MB. Free memory is still 104.0MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.12ms. Allocated memory is still 144.7MB. Free memory is still 100.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 359.10ms. Allocated memory is still 144.7MB. Free memory was 83.8MB in the beginning and 67.0MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.56ms. Allocated memory is still 144.7MB. Free memory was 67.0MB in the beginning and 64.2MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 80.12ms. Allocated memory is still 144.7MB. Free memory was 64.2MB in the beginning and 114.3MB in the end (delta: -50.2MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. * RCFGBuilder took 939.35ms. Allocated memory was 144.7MB in the beginning and 195.0MB in the end (delta: 50.3MB). Free memory was 114.3MB in the beginning and 66.5MB in the end (delta: 47.8MB). Peak memory consumption was 101.7MB. Max. memory is 16.1GB. * TraceAbstraction took 6083.41ms. Allocated memory was 195.0MB in the beginning and 880.8MB in the end (delta: 685.8MB). Free memory was 65.4MB in the beginning and 613.6MB in the end (delta: -548.1MB). Peak memory consumption was 491.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 146]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 147]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 148]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 149]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 84 locations, 8 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: 6.0s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 468 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 363 mSDsluCounter, 16 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 41 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1242 IncrementalHoareTripleChecker+Invalid, 1283 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 41 mSolverCounterUnsat, 16 mSDtfsCounter, 1242 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=205occurred in iteration=6, InterpolantAutomatonStates: 31, 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, 133 NumberOfCodeBlocks, 133 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 126 ConstructedInterpolants, 0 QuantifiedInterpolants, 684 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 5/5 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-04 15:49:35,312 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE