./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/loop-acceleration/phases_2-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.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/loop-acceleration/phases_2-1.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 40774f15dea268138f2179cc2f832c9729515e75ef9c65e50e7b347c749bb02c --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 07:17:53,292 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 07:17:53,354 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2025-03-09 07:17:53,359 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 07:17:53,359 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 07:17:53,359 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder.Remove goto edges from RCFG [2025-03-09 07:17:53,381 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 07:17:53,383 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 07:17:53,383 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 07:17:53,384 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 07:17:53,384 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 07:17:53,385 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 07:17:53,385 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 07:17:53,385 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 07:17:53,385 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-03-09 07:17:53,385 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-03-09 07:17:53,385 INFO L153 SettingsManager]: * Use old map elimination=false [2025-03-09 07:17:53,385 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-03-09 07:17:53,385 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-03-09 07:17:53,386 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-03-09 07:17:53,386 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 07:17:53,386 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-03-09 07:17:53,386 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 07:17:53,386 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 07:17:53,386 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 07:17:53,386 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 07:17:53,386 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-03-09 07:17:53,386 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-03-09 07:17:53,386 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-03-09 07:17:53,386 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 07:17:53,387 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 07:17:53,387 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-09 07:17:53,387 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-03-09 07:17:53,387 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 07:17:53,387 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 07:17:53,387 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 07:17:53,387 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 07:17:53,387 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 07:17:53,388 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 07:17:53,388 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-03-09 07:17:53,388 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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 -> 40774f15dea268138f2179cc2f832c9729515e75ef9c65e50e7b347c749bb02c [2025-03-09 07:17:53,650 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 07:17:53,655 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 07:17:53,657 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 07:17:53,658 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 07:17:53,658 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 07:17:53,659 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-acceleration/phases_2-1.c [2025-03-09 07:17:54,751 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ed6c6ca8/ff2db729058a4473ac3004f86d3193e7/FLAG8df625601 [2025-03-09 07:17:54,972 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 07:17:54,973 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-acceleration/phases_2-1.c [2025-03-09 07:17:54,989 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ed6c6ca8/ff2db729058a4473ac3004f86d3193e7/FLAG8df625601 [2025-03-09 07:17:55,344 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ed6c6ca8/ff2db729058a4473ac3004f86d3193e7 [2025-03-09 07:17:55,346 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 07:17:55,348 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 07:17:55,349 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 07:17:55,349 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 07:17:55,352 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 07:17:55,353 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 07:17:55" (1/1) ... [2025-03-09 07:17:55,354 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f3466a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:17:55, skipping insertion in model container [2025-03-09 07:17:55,354 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 07:17:55" (1/1) ... [2025-03-09 07:17:55,365 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 07:17:55,476 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 07:17:55,485 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 07:17:55,495 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 07:17:55,509 INFO L204 MainTranslator]: Completed translation [2025-03-09 07:17:55,510 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:17:55 WrapperNode [2025-03-09 07:17:55,510 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 07:17:55,511 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 07:17:55,511 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 07:17:55,511 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 07:17:55,516 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:17:55" (1/1) ... [2025-03-09 07:17:55,521 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:17:55" (1/1) ... [2025-03-09 07:17:55,533 INFO L138 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 30 [2025-03-09 07:17:55,534 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 07:17:55,535 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 07:17:55,535 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 07:17:55,535 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 07:17:55,540 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:17:55" (1/1) ... [2025-03-09 07:17:55,540 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:17:55" (1/1) ... [2025-03-09 07:17:55,541 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:17:55" (1/1) ... [2025-03-09 07:17:55,552 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]. [2025-03-09 07:17:55,554 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:17:55" (1/1) ... [2025-03-09 07:17:55,554 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:17:55" (1/1) ... [2025-03-09 07:17:55,556 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:17:55" (1/1) ... [2025-03-09 07:17:55,558 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:17:55" (1/1) ... [2025-03-09 07:17:55,559 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:17:55" (1/1) ... [2025-03-09 07:17:55,560 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:17:55" (1/1) ... [2025-03-09 07:17:55,562 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 07:17:55,563 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 07:17:55,563 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 07:17:55,563 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 07:17:55,564 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:17:55" (1/1) ... [2025-03-09 07:17:55,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 07:17:55,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 07:17:55,598 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) [2025-03-09 07:17:55,601 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 [2025-03-09 07:17:55,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 07:17:55,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 07:17:55,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 07:17:55,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 07:17:55,663 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 07:17:55,665 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 07:17:55,817 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2025-03-09 07:17:55,820 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 07:17:55,827 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 07:17:55,828 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 07:17:55,828 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 07:17:55 BoogieIcfgContainer [2025-03-09 07:17:55,828 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 07:17:55,829 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-03-09 07:17:55,829 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-03-09 07:17:55,835 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-03-09 07:17:55,835 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-03-09 07:17:55,836 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 09.03 07:17:55" (1/3) ... [2025-03-09 07:17:55,838 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@9a7ed79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.03 07:17:55, skipping insertion in model container [2025-03-09 07:17:55,839 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-03-09 07:17:55,839 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:17:55" (2/3) ... [2025-03-09 07:17:55,839 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@9a7ed79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.03 07:17:55, skipping insertion in model container [2025-03-09 07:17:55,840 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-03-09 07:17:55,840 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 07:17:55" (3/3) ... [2025-03-09 07:17:55,841 INFO L363 chiAutomizerObserver]: Analyzing ICFG phases_2-1.c [2025-03-09 07:17:55,882 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-03-09 07:17:55,882 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-03-09 07:17:55,882 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-03-09 07:17:55,882 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-03-09 07:17:55,882 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-03-09 07:17:55,882 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-03-09 07:17:55,883 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-03-09 07:17:55,883 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-03-09 07:17:55,887 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 07:17:55,899 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2025-03-09 07:17:55,900 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-03-09 07:17:55,900 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-03-09 07:17:55,904 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-03-09 07:17:55,904 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-03-09 07:17:55,904 INFO L338 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-03-09 07:17:55,904 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 07:17:55,905 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2025-03-09 07:17:55,905 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-03-09 07:17:55,905 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-03-09 07:17:55,905 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-03-09 07:17:55,905 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-03-09 07:17:55,911 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(13, 2);call #Ultimate.allocInit(12, 3);" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~post5#1, main_~x~0#1, main_~y~0#1;main_~x~0#1 := 1;havoc main_#t~nondet4#1;main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;" "assume !!(main_~y~0#1 % 4294967296 > 0);" [2025-03-09 07:17:55,911 INFO L754 eck$LassoCheckResult]: Loop: "assume main_~x~0#1 % 4294967296 < main_~y~0#1 % 4294967296;" "assume main_~x~0#1 % 4294967296 < main_~y~0#1 % 4294967296 / (main_~x~0#1 % 4294967296) % 4294967296;main_~x~0#1 := main_~x~0#1 * main_~x~0#1;" [2025-03-09 07:17:55,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 07:17:55,917 INFO L85 PathProgramCache]: Analyzing trace with hash 44653, now seen corresponding path program 1 times [2025-03-09 07:17:55,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 07:17:55,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930936758] [2025-03-09 07:17:55,924 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 07:17:55,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 07:17:55,973 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 07:17:55,987 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 07:17:55,987 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 07:17:55,987 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 07:17:55,988 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 07:17:55,995 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 07:17:56,000 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 07:17:56,001 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 07:17:56,001 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 07:17:56,016 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 07:17:56,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 07:17:56,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1279, now seen corresponding path program 1 times [2025-03-09 07:17:56,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 07:17:56,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676278132] [2025-03-09 07:17:56,019 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 07:17:56,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 07:17:56,024 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-09 07:17:56,035 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-09 07:17:56,036 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 07:17:56,036 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-09 07:17:56,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1705591848] [2025-03-09 07:17:56,037 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 07:17:56,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 07:17:56,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 07:17:56,040 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 07:17:56,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-09 07:17:56,066 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-09 07:17:56,068 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-09 07:17:56,068 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 07:17:56,068 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 07:17:56,069 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 07:17:56,070 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-09 07:17:56,072 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-09 07:17:56,072 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 07:17:56,072 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 07:17:56,078 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 07:17:56,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 07:17:56,080 INFO L85 PathProgramCache]: Analyzing trace with hash 42911851, now seen corresponding path program 1 times [2025-03-09 07:17:56,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 07:17:56,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384690571] [2025-03-09 07:17:56,080 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 07:17:56,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 07:17:56,088 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-09 07:17:56,107 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-09 07:17:56,108 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 07:17:56,109 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-09 07:17:56,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1644726067] [2025-03-09 07:17:56,109 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 07:17:56,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 07:17:56,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 07:17:56,112 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 07:17:56,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-09 07:17:56,137 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-09 07:17:56,144 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-09 07:17:56,144 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 07:17:56,145 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 07:17:56,145 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 07:17:56,148 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-09 07:17:56,151 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-09 07:17:56,151 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 07:17:56,151 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 07:17:56,155 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 07:17:56,374 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 07:17:56,376 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 07:17:56,376 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 07:17:56,376 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 07:17:56,376 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 07:17:56,379 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 07:17:56,381 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 07:17:56,381 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 07:17:56,381 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 07:17:56,402 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 09.03 07:17:56 BoogieIcfgContainer [2025-03-09 07:17:56,402 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-03-09 07:17:56,403 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-09 07:17:56,403 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-09 07:17:56,403 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-09 07:17:56,404 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 07:17:55" (3/4) ... [2025-03-09 07:17:56,405 INFO L143 WitnessPrinter]: Generating witness for non-termination counterexample [2025-03-09 07:17:56,430 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-09 07:17:56,430 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-09 07:17:56,436 INFO L158 Benchmark]: Toolchain (without parser) took 1086.35ms. Allocated memory is still 142.6MB. Free memory was 114.4MB in the beginning and 57.6MB in the end (delta: 56.8MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2025-03-09 07:17:56,436 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 201.3MB. Free memory is still 122.5MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 07:17:56,437 INFO L158 Benchmark]: CACSL2BoogieTranslator took 161.92ms. Allocated memory is still 142.6MB. Free memory was 114.4MB in the beginning and 103.6MB in the end (delta: 10.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-09 07:17:56,437 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.02ms. Allocated memory is still 142.6MB. Free memory was 103.6MB in the beginning and 102.6MB in the end (delta: 999.8kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 07:17:56,437 INFO L158 Benchmark]: Boogie Preprocessor took 27.48ms. Allocated memory is still 142.6MB. Free memory was 102.6MB in the beginning and 101.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 07:17:56,438 INFO L158 Benchmark]: IcfgBuilder took 265.36ms. Allocated memory is still 142.6MB. Free memory was 101.6MB in the beginning and 91.0MB in the end (delta: 10.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-09 07:17:56,438 INFO L158 Benchmark]: BuchiAutomizer took 573.04ms. Allocated memory is still 142.6MB. Free memory was 91.0MB in the beginning and 60.3MB in the end (delta: 30.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-09 07:17:56,438 INFO L158 Benchmark]: Witness Printer took 27.67ms. Allocated memory is still 142.6MB. Free memory was 60.3MB in the beginning and 57.6MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 07:17:56,442 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 201.3MB. Free memory is still 122.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 161.92ms. Allocated memory is still 142.6MB. Free memory was 114.4MB in the beginning and 103.6MB in the end (delta: 10.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.02ms. Allocated memory is still 142.6MB. Free memory was 103.6MB in the beginning and 102.6MB in the end (delta: 999.8kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 27.48ms. Allocated memory is still 142.6MB. Free memory was 102.6MB in the beginning and 101.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 265.36ms. Allocated memory is still 142.6MB. Free memory was 101.6MB in the beginning and 91.0MB in the end (delta: 10.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 573.04ms. Allocated memory is still 142.6MB. Free memory was 91.0MB in the beginning and 60.3MB in the end (delta: 30.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 27.67ms. Allocated memory is still 142.6MB. Free memory was 60.3MB in the beginning and 57.6MB in the end (delta: 2.7MB). There was no memory consumed. 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 0.5s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.4s. 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: 23]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L18] unsigned int x = 1; [L19] unsigned int y = __VERIFIER_nondet_uint(); [L21] COND FALSE !(!(y > 0)) VAL [x=1, y=2] Loop: [L23] COND TRUE x < y [L24] COND TRUE x < y / x [L25] x *= x End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 23]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L18] unsigned int x = 1; [L19] unsigned int y = __VERIFIER_nondet_uint(); [L21] COND FALSE !(!(y > 0)) VAL [x=1, y=2] Loop: [L23] COND TRUE x < y [L24] COND TRUE x < y / x [L25] x *= x End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2025-03-09 07:17:56,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-09 07:17:56,659 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-09 07:17:56,859 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with 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)