./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/loops/trex04.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 023d838f 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/AutomizerTermination.xml -i ../sv-benchmarks/c/loops/trex04.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-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(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f70ffe9cd45c37f44e9e780e31340fab45b6a2fb7f7ef23a2d90faf4241229d6 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 23:03:04,415 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 23:03:04,498 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2024-11-10 23:03:04,502 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 23:03:04,503 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 23:03:04,503 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder.Remove goto edges from RCFG [2024-11-10 23:03:04,537 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 23:03:04,537 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 23:03:04,538 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 23:03:04,539 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 23:03:04,539 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 23:03:04,540 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 23:03:04,541 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 23:03:04,541 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 23:03:04,542 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-11-10 23:03:04,542 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-11-10 23:03:04,543 INFO L153 SettingsManager]: * Use old map elimination=false [2024-11-10 23:03:04,543 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-11-10 23:03:04,543 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-11-10 23:03:04,544 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-11-10 23:03:04,544 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 23:03:04,552 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-11-10 23:03:04,552 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 23:03:04,552 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 23:03:04,552 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 23:03:04,552 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 23:03:04,553 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-11-10 23:03:04,553 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-11-10 23:03:04,553 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-11-10 23:03:04,553 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 23:03:04,553 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 23:03:04,554 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 23:03:04,554 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 23:03:04,554 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-11-10 23:03:04,554 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 23:03:04,554 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 23:03:04,555 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 23:03:04,555 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 23:03:04,555 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 23:03:04,557 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-11-10 23:03:04,557 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f70ffe9cd45c37f44e9e780e31340fab45b6a2fb7f7ef23a2d90faf4241229d6 [2024-11-10 23:03:04,824 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 23:03:04,846 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 23:03:04,849 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 23:03:04,850 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 23:03:04,850 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 23:03:04,851 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/trex04.c [2024-11-10 23:03:06,246 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 23:03:06,438 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 23:03:06,439 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/trex04.c [2024-11-10 23:03:06,447 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fccf95f03/58b1e55a76e74da2a9c226797e8afd57/FLAG4df65b9c9 [2024-11-10 23:03:06,463 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fccf95f03/58b1e55a76e74da2a9c226797e8afd57 [2024-11-10 23:03:06,465 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 23:03:06,466 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 23:03:06,468 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 23:03:06,468 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 23:03:06,473 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 23:03:06,473 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 11:03:06" (1/1) ... [2024-11-10 23:03:06,474 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3492e5f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:03:06, skipping insertion in model container [2024-11-10 23:03:06,474 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 11:03:06" (1/1) ... [2024-11-10 23:03:06,497 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 23:03:06,706 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 23:03:06,721 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 23:03:06,762 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 23:03:06,786 INFO L204 MainTranslator]: Completed translation [2024-11-10 23:03:06,786 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:03:06 WrapperNode [2024-11-10 23:03:06,787 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 23:03:06,788 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 23:03:06,788 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 23:03:06,788 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 23:03:06,794 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:03:06" (1/1) ... [2024-11-10 23:03:06,805 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:03:06" (1/1) ... [2024-11-10 23:03:06,830 INFO L138 Inliner]: procedures = 16, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 84 [2024-11-10 23:03:06,831 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 23:03:06,832 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 23:03:06,832 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 23:03:06,832 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 23:03:06,841 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:03:06" (1/1) ... [2024-11-10 23:03:06,842 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:03:06" (1/1) ... [2024-11-10 23:03:06,843 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:03:06" (1/1) ... [2024-11-10 23:03:06,860 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-10 23:03:06,862 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:03:06" (1/1) ... [2024-11-10 23:03:06,862 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:03:06" (1/1) ... [2024-11-10 23:03:06,869 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:03:06" (1/1) ... [2024-11-10 23:03:06,870 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:03:06" (1/1) ... [2024-11-10 23:03:06,871 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:03:06" (1/1) ... [2024-11-10 23:03:06,876 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:03:06" (1/1) ... [2024-11-10 23:03:06,877 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 23:03:06,878 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 23:03:06,878 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 23:03:06,882 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 23:03:06,883 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:03:06" (1/1) ... [2024-11-10 23:03:06,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 23:03:06,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 23:03:06,929 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-10 23:03:06,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-11-10 23:03:06,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 23:03:06,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 23:03:06,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 23:03:06,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 23:03:07,051 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 23:03:07,053 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 23:03:07,273 INFO L? ?]: Removed 31 outVars from TransFormulas that were not future-live. [2024-11-10 23:03:07,276 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 23:03:07,289 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 23:03:07,291 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 23:03:07,292 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 11:03:07 BoogieIcfgContainer [2024-11-10 23:03:07,292 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 23:03:07,293 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-11-10 23:03:07,294 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-11-10 23:03:07,298 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-11-10 23:03:07,299 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-10 23:03:07,300 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 10.11 11:03:06" (1/3) ... [2024-11-10 23:03:07,301 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7cb4966b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 10.11 11:03:07, skipping insertion in model container [2024-11-10 23:03:07,301 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-10 23:03:07,301 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:03:06" (2/3) ... [2024-11-10 23:03:07,301 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7cb4966b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 10.11 11:03:07, skipping insertion in model container [2024-11-10 23:03:07,301 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-10 23:03:07,301 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 11:03:07" (3/3) ... [2024-11-10 23:03:07,303 INFO L332 chiAutomizerObserver]: Analyzing ICFG trex04.c [2024-11-10 23:03:07,365 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-11-10 23:03:07,365 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-11-10 23:03:07,366 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-11-10 23:03:07,366 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-11-10 23:03:07,366 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-11-10 23:03:07,366 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-11-10 23:03:07,367 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-11-10 23:03:07,367 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-11-10 23:03:07,372 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 24 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 23 states have internal predecessors, (35), 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) [2024-11-10 23:03:07,389 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-11-10 23:03:07,390 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-10 23:03:07,390 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-10 23:03:07,395 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 23:03:07,396 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-11-10 23:03:07,396 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-11-10 23:03:07,396 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 24 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 23 states have internal predecessors, (35), 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) [2024-11-10 23:03:07,398 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-11-10 23:03:07,399 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-10 23:03:07,399 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-10 23:03:07,400 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 23:03:07,400 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-11-10 23:03:07,408 INFO L745 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);call #Ultimate.allocInit(12, 3); 16#ULTIMATE.init_returnLabel#1true assume true;assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_~d~0#1, main_~x~0#1, main_~c1~1#1, main_~c2~1#1;main_~d~0#1 := 1;havoc main_#t~nondet8#1;main_~x~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1; 21#L31-1true assume !!(main_~x~0#1 <= 1000000 && main_~x~0#1 >= -1000000);havoc main_#t~nondet9#1;assume 0 == main_#t~nondet9#1 || 1 == main_#t~nondet9#1;main_~c1~1#1 := (if 0 == main_#t~nondet9#1 % 256 then 0 else 1);havoc main_#t~nondet9#1;havoc main_#t~nondet10#1;assume 0 == main_#t~nondet10#1 || 1 == main_#t~nondet10#1;main_~c2~1#1 := (if 0 == main_#t~nondet10#1 % 256 then 0 else 1);havoc main_#t~nondet10#1; 17#L34true assume 0 != main_~c1~1#1 % 256;main_~d~0#1 := main_~d~0#1 - 1; 24#L35true assume !(0 != main_~c2~1#1 % 256); 13#L37true havoc main_#t~nondet11#1;assume 0 == main_#t~nondet11#1 || 1 == main_#t~nondet11#1;main_~c1~1#1 := (if 0 == main_#t~nondet11#1 % 256 then 0 else 1);havoc main_#t~nondet12#1;assume 0 == main_#t~nondet12#1 || 1 == main_#t~nondet12#1;main_~c2~1#1 := (if 0 == main_#t~nondet12#1 % 256 then 0 else 1);havoc main_#t~nondet11#1;havoc main_#t~nondet12#1; 25#L39true assume !(0 != main_~c1~1#1 % 256); 22#L40true assume !(0 != main_~c2~1#1 % 256); 12#L42true [2024-11-10 23:03:07,409 INFO L747 eck$LassoCheckResult]: Loop: 12#L42true assume true; 3#L42-1true assume !!(main_~x~0#1 > 0);main_~x~0#1 := main_~x~0#1 - main_~d~0#1; 12#L42true [2024-11-10 23:03:07,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 23:03:07,417 INFO L85 PathProgramCache]: Analyzing trace with hash -2103102356, now seen corresponding path program 1 times [2024-11-10 23:03:07,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 23:03:07,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667954120] [2024-11-10 23:03:07,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 23:03:07,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 23:03:07,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 23:03:07,573 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 23:03:07,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 23:03:07,631 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 23:03:07,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 23:03:07,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1344, now seen corresponding path program 1 times [2024-11-10 23:03:07,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 23:03:07,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464417444] [2024-11-10 23:03:07,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 23:03:07,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 23:03:07,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 23:03:07,647 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 23:03:07,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 23:03:07,653 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 23:03:07,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 23:03:07,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1848232683, now seen corresponding path program 1 times [2024-11-10 23:03:07,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 23:03:07,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65512823] [2024-11-10 23:03:07,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 23:03:07,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 23:03:07,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 23:03:07,695 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 23:03:07,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 23:03:07,730 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 23:03:08,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 23:03:08,220 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 23:03:08,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 23:03:08,266 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 10.11 11:03:08 BoogieIcfgContainer [2024-11-10 23:03:08,267 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-11-10 23:03:08,268 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-10 23:03:08,268 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-10 23:03:08,269 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-10 23:03:08,269 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 11:03:07" (3/4) ... [2024-11-10 23:03:08,271 INFO L140 WitnessPrinter]: Generating witness for non-termination counterexample [2024-11-10 23:03:08,307 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-10 23:03:08,311 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-10 23:03:08,313 INFO L158 Benchmark]: Toolchain (without parser) took 1845.60ms. Allocated memory is still 178.3MB. Free memory was 115.8MB in the beginning and 73.0MB in the end (delta: 42.8MB). Peak memory consumption was 40.0MB. Max. memory is 16.1GB. [2024-11-10 23:03:08,313 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 96.5MB. Free memory is still 50.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 23:03:08,313 INFO L158 Benchmark]: CACSL2BoogieTranslator took 319.26ms. Allocated memory is still 178.3MB. Free memory was 115.3MB in the beginning and 144.7MB in the end (delta: -29.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-10 23:03:08,315 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.10ms. Allocated memory is still 178.3MB. Free memory was 144.7MB in the beginning and 143.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 23:03:08,315 INFO L158 Benchmark]: Boogie Preprocessor took 46.04ms. Allocated memory is still 178.3MB. Free memory was 143.4MB in the beginning and 141.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 23:03:08,316 INFO L158 Benchmark]: IcfgBuilder took 414.03ms. Allocated memory is still 178.3MB. Free memory was 141.4MB in the beginning and 128.0MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-10 23:03:08,316 INFO L158 Benchmark]: BuchiAutomizer took 973.97ms. Allocated memory is still 178.3MB. Free memory was 128.0MB in the beginning and 75.1MB in the end (delta: 52.9MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. [2024-11-10 23:03:08,319 INFO L158 Benchmark]: Witness Printer took 43.25ms. Allocated memory is still 178.3MB. Free memory was 75.1MB in the beginning and 73.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 23:03:08,321 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 96.5MB. Free memory is still 50.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 319.26ms. Allocated memory is still 178.3MB. Free memory was 115.3MB in the beginning and 144.7MB in the end (delta: -29.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.10ms. Allocated memory is still 178.3MB. Free memory was 144.7MB in the beginning and 143.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.04ms. Allocated memory is still 178.3MB. Free memory was 143.4MB in the beginning and 141.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 414.03ms. Allocated memory is still 178.3MB. Free memory was 141.4MB in the beginning and 128.0MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * BuchiAutomizer took 973.97ms. Allocated memory is still 178.3MB. Free memory was 128.0MB in the beginning and 75.1MB in the end (delta: 52.9MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. * Witness Printer took 43.25ms. Allocated memory is still 178.3MB. Free memory was 75.1MB in the beginning and 73.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.8s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 42]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L29] int d = 1; [L30] int x = __VERIFIER_nondet_int(); [L31] COND FALSE !(!(x <= 1000000 && x >= -1000000)) [L32] _Bool c1=__VERIFIER_nondet_bool(), c2=__VERIFIER_nondet_bool(); [L32] _Bool c1=__VERIFIER_nondet_bool(), c2=__VERIFIER_nondet_bool(); [L34] COND TRUE \read(c1) [L34] d = d - 1 VAL [c2=0, d=0, x=1] [L35] COND FALSE !(\read(c2)) VAL [d=0, x=1] [L37] c1=__VERIFIER_nondet_bool() [L37] c2=__VERIFIER_nondet_bool() [L39] COND FALSE !(\read(c1)) VAL [c2=0, d=0, x=1] [L40] COND FALSE !(\read(c2)) VAL [d=0, x=1] Loop: [L42] COND TRUE x>0 [L44] x=x-d End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 42]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L29] int d = 1; [L30] int x = __VERIFIER_nondet_int(); [L31] COND FALSE !(!(x <= 1000000 && x >= -1000000)) [L32] _Bool c1=__VERIFIER_nondet_bool(), c2=__VERIFIER_nondet_bool(); [L32] _Bool c1=__VERIFIER_nondet_bool(), c2=__VERIFIER_nondet_bool(); [L34] COND TRUE \read(c1) [L34] d = d - 1 VAL [c2=0, d=0, x=1] [L35] COND FALSE !(\read(c2)) VAL [d=0, x=1] [L37] c1=__VERIFIER_nondet_bool() [L37] c2=__VERIFIER_nondet_bool() [L39] COND FALSE !(\read(c1)) VAL [c2=0, d=0, x=1] [L40] COND FALSE !(\read(c2)) VAL [d=0, x=1] Loop: [L42] COND TRUE x>0 [L44] x=x-d End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2024-11-10 23:03:08,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)