./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/array-industry-pattern/array_monotonic.i --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/array-industry-pattern/array_monotonic.i -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 5e947ce3cb6be538c3110154d89a790a98803ec545aa8464d99fb543118ea442 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 06:57:05,577 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 06:57:05,639 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2025-03-09 06:57:05,643 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 06:57:05,644 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 06:57:05,644 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder.Remove goto edges from RCFG [2025-03-09 06:57:05,665 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 06:57:05,665 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 06:57:05,665 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 06:57:05,666 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 06:57:05,666 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 06:57:05,667 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 06:57:05,667 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 06:57:05,667 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 06:57:05,667 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-03-09 06:57:05,667 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-03-09 06:57:05,667 INFO L153 SettingsManager]: * Use old map elimination=false [2025-03-09 06:57:05,667 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-03-09 06:57:05,667 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-03-09 06:57:05,667 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-03-09 06:57:05,667 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 06:57:05,667 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-03-09 06:57:05,667 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 06:57:05,667 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 06:57:05,667 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 06:57:05,667 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 06:57:05,667 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-03-09 06:57:05,668 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-03-09 06:57:05,668 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-03-09 06:57:05,668 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 06:57:05,668 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 06:57:05,668 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-09 06:57:05,668 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-03-09 06:57:05,668 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 06:57:05,668 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 06:57:05,669 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 06:57:05,669 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 06:57:05,669 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 06:57:05,669 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 06:57:05,669 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-03-09 06:57:05,669 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 -> 5e947ce3cb6be538c3110154d89a790a98803ec545aa8464d99fb543118ea442 [2025-03-09 06:57:05,916 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 06:57:05,924 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 06:57:05,925 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 06:57:05,926 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 06:57:05,926 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 06:57:05,928 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-industry-pattern/array_monotonic.i [2025-03-09 06:57:07,057 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35d7e7e6f/772c94ea2ea54cb0811c70f337a71b3e/FLAG4078998f0 [2025-03-09 06:57:07,300 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 06:57:07,301 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/array_monotonic.i [2025-03-09 06:57:07,307 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35d7e7e6f/772c94ea2ea54cb0811c70f337a71b3e/FLAG4078998f0 [2025-03-09 06:57:07,628 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35d7e7e6f/772c94ea2ea54cb0811c70f337a71b3e [2025-03-09 06:57:07,631 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 06:57:07,632 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 06:57:07,633 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 06:57:07,633 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 06:57:07,636 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 06:57:07,636 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:57:07" (1/1) ... [2025-03-09 06:57:07,637 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@656bf32e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:57:07, skipping insertion in model container [2025-03-09 06:57:07,637 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:57:07" (1/1) ... [2025-03-09 06:57:07,646 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 06:57:07,745 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:57:07,753 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 06:57:07,765 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:57:07,779 INFO L204 MainTranslator]: Completed translation [2025-03-09 06:57:07,780 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:57:07 WrapperNode [2025-03-09 06:57:07,780 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 06:57:07,781 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 06:57:07,782 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 06:57:07,782 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 06:57:07,786 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:57:07" (1/1) ... [2025-03-09 06:57:07,790 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:57:07" (1/1) ... [2025-03-09 06:57:07,800 INFO L138 Inliner]: procedures = 16, calls = 17, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 42 [2025-03-09 06:57:07,800 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 06:57:07,800 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 06:57:07,800 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 06:57:07,800 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 06:57:07,806 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:57:07" (1/1) ... [2025-03-09 06:57:07,806 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:57:07" (1/1) ... [2025-03-09 06:57:07,811 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:57:07" (1/1) ... [2025-03-09 06:57:07,823 INFO L175 MemorySlicer]: Split 7 memory accesses to 3 slices as follows [2, 3, 2]. 43 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2025-03-09 06:57:07,824 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:57:07" (1/1) ... [2025-03-09 06:57:07,825 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:57:07" (1/1) ... [2025-03-09 06:57:07,832 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:57:07" (1/1) ... [2025-03-09 06:57:07,833 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:57:07" (1/1) ... [2025-03-09 06:57:07,833 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:57:07" (1/1) ... [2025-03-09 06:57:07,834 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:57:07" (1/1) ... [2025-03-09 06:57:07,835 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 06:57:07,835 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 06:57:07,835 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 06:57:07,837 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 06:57:07,838 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:57:07" (1/1) ... [2025-03-09 06:57:07,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:57:07,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:57:07,868 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 06:57:07,870 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 06:57:07,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 06:57:07,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 06:57:07,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-09 06:57:07,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-09 06:57:07,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-09 06:57:07,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-09 06:57:07,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-09 06:57:07,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-09 06:57:07,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 06:57:07,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 06:57:07,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-09 06:57:07,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-09 06:57:07,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-09 06:57:07,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-09 06:57:07,949 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 06:57:07,952 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 06:57:08,041 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2025-03-09 06:57:08,041 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 06:57:08,046 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 06:57:08,046 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 06:57:08,047 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:57:08 BoogieIcfgContainer [2025-03-09 06:57:08,047 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 06:57:08,047 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-03-09 06:57:08,048 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-03-09 06:57:08,051 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-03-09 06:57:08,052 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-03-09 06:57:08,052 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 09.03 06:57:07" (1/3) ... [2025-03-09 06:57:08,053 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@92320d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.03 06:57:08, skipping insertion in model container [2025-03-09 06:57:08,053 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-03-09 06:57:08,054 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:57:07" (2/3) ... [2025-03-09 06:57:08,054 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@92320d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.03 06:57:08, skipping insertion in model container [2025-03-09 06:57:08,054 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-03-09 06:57:08,054 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:57:08" (3/3) ... [2025-03-09 06:57:08,055 INFO L363 chiAutomizerObserver]: Analyzing ICFG array_monotonic.i [2025-03-09 06:57:08,090 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-03-09 06:57:08,091 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-03-09 06:57:08,091 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-03-09 06:57:08,091 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-03-09 06:57:08,091 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-03-09 06:57:08,091 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-03-09 06:57:08,091 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-03-09 06:57:08,091 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-03-09 06:57:08,094 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 16 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 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 06:57:08,103 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2025-03-09 06:57:08,103 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-03-09 06:57:08,103 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-03-09 06:57:08,107 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-03-09 06:57:08,107 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-03-09 06:57:08,107 INFO L338 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-03-09 06:57:08,107 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 16 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 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 06:57:08,109 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2025-03-09 06:57:08,109 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-03-09 06:57:08,109 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-03-09 06:57:08,109 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-03-09 06:57:08,109 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-03-09 06:57:08,113 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~mem2#1, main_#t~mem3#1, main_#t~mem4#1, main_~i~0#1, main_~#a~0#1.base, main_~#a~0#1.offset, main_~#b~0#1.base, main_~#b~0#1.offset;havoc main_~i~0#1;call main_~#a~0#1.base, main_~#a~0#1.offset := #Ultimate.allocOnStack(400000);call main_~#b~0#1.base, main_~#b~0#1.offset := #Ultimate.allocOnStack(400000);main_~i~0#1 := 0;" [2025-03-09 06:57:08,114 INFO L754 eck$LassoCheckResult]: Loop: "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume !(10 == main_#t~mem2#1);havoc main_#t~mem2#1;" "main_~i~0#1 := 2 + main_~i~0#1;" [2025-03-09 06:57:08,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:57:08,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1568, now seen corresponding path program 1 times [2025-03-09 06:57:08,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:57:08,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4140616] [2025-03-09 06:57:08,122 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:57:08,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:57:08,163 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-09 06:57:08,174 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-09 06:57:08,175 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:57:08,175 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:57:08,175 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 06:57:08,177 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-09 06:57:08,181 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-09 06:57:08,181 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:57:08,181 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:57:08,191 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 06:57:08,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:57:08,193 INFO L85 PathProgramCache]: Analyzing trace with hash 46638, now seen corresponding path program 1 times [2025-03-09 06:57:08,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:57:08,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588494864] [2025-03-09 06:57:08,193 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:57:08,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:57:08,197 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 06:57:08,200 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 06:57:08,201 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:57:08,201 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:57:08,201 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 06:57:08,202 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 06:57:08,204 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 06:57:08,204 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:57:08,204 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:57:08,206 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 06:57:08,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:57:08,207 INFO L85 PathProgramCache]: Analyzing trace with hash 46729135, now seen corresponding path program 1 times [2025-03-09 06:57:08,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:57:08,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461370230] [2025-03-09 06:57:08,207 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:57:08,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:57:08,217 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-09 06:57:08,234 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-09 06:57:08,236 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:57:08,236 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:57:08,236 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 06:57:08,241 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-09 06:57:08,252 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-09 06:57:08,253 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:57:08,253 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:57:08,257 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 06:57:08,618 INFO L204 LassoAnalysis]: Preferences: [2025-03-09 06:57:08,619 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-03-09 06:57:08,619 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-03-09 06:57:08,619 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-03-09 06:57:08,619 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-03-09 06:57:08,619 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:57:08,619 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-03-09 06:57:08,619 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-03-09 06:57:08,620 INFO L132 ssoRankerPreferences]: Filename of dumped script: array_monotonic.i_Iteration1_Lasso [2025-03-09 06:57:08,620 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-03-09 06:57:08,620 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-03-09 06:57:08,632 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:57:08,638 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:57:08,655 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:57:08,657 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:57:08,660 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:57:08,857 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:57:08,860 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:57:08,862 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:57:09,016 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-03-09 06:57:09,018 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-03-09 06:57:09,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:57:09,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:57:09,021 INFO L229 MonitoredProcess]: Starting monitored process 2 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 06:57:09,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2025-03-09 06:57:09,024 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-03-09 06:57:09,036 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-03-09 06:57:09,036 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-03-09 06:57:09,037 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-03-09 06:57:09,037 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-03-09 06:57:09,043 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-03-09 06:57:09,043 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-03-09 06:57:09,047 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-03-09 06:57:09,053 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2025-03-09 06:57:09,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:57:09,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:57:09,058 INFO L229 MonitoredProcess]: Starting monitored process 3 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 06:57:09,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2025-03-09 06:57:09,060 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-03-09 06:57:09,069 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-03-09 06:57:09,069 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-03-09 06:57:09,069 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-03-09 06:57:09,069 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-03-09 06:57:09,071 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-03-09 06:57:09,071 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-03-09 06:57:09,074 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-03-09 06:57:09,080 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2025-03-09 06:57:09,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:57:09,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:57:09,084 INFO L229 MonitoredProcess]: Starting monitored process 4 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 06:57:09,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2025-03-09 06:57:09,088 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-03-09 06:57:09,098 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-03-09 06:57:09,098 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-03-09 06:57:09,098 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-03-09 06:57:09,098 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-03-09 06:57:09,101 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-03-09 06:57:09,101 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-03-09 06:57:09,104 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-03-09 06:57:09,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2025-03-09 06:57:09,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:57:09,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:57:09,112 INFO L229 MonitoredProcess]: Starting monitored process 5 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 06:57:09,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2025-03-09 06:57:09,115 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-03-09 06:57:09,125 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-03-09 06:57:09,125 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-03-09 06:57:09,125 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-03-09 06:57:09,125 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-03-09 06:57:09,125 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-03-09 06:57:09,126 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-03-09 06:57:09,126 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-03-09 06:57:09,127 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-03-09 06:57:09,133 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2025-03-09 06:57:09,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:57:09,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:57:09,135 INFO L229 MonitoredProcess]: Starting monitored process 6 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 06:57:09,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2025-03-09 06:57:09,138 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-03-09 06:57:09,147 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-03-09 06:57:09,148 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-03-09 06:57:09,148 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-03-09 06:57:09,148 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-03-09 06:57:09,148 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-03-09 06:57:09,149 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-03-09 06:57:09,149 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-03-09 06:57:09,150 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-03-09 06:57:09,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2025-03-09 06:57:09,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:57:09,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:57:09,157 INFO L229 MonitoredProcess]: Starting monitored process 7 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 06:57:09,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2025-03-09 06:57:09,159 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-03-09 06:57:09,173 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-03-09 06:57:09,173 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-03-09 06:57:09,177 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-03-09 06:57:09,177 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-03-09 06:57:09,179 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-03-09 06:57:09,180 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-03-09 06:57:09,183 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-03-09 06:57:09,189 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2025-03-09 06:57:09,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:57:09,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:57:09,191 INFO L229 MonitoredProcess]: Starting monitored process 8 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 06:57:09,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2025-03-09 06:57:09,193 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-03-09 06:57:09,203 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-03-09 06:57:09,203 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-03-09 06:57:09,203 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-03-09 06:57:09,203 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-03-09 06:57:09,211 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-03-09 06:57:09,211 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-03-09 06:57:09,218 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-03-09 06:57:09,238 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2025-03-09 06:57:09,240 INFO L444 ModelExtractionUtils]: 5 out of 13 variables were initially zero. Simplification set additionally 5 variables to zero. [2025-03-09 06:57:09,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:57:09,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:57:09,245 INFO L229 MonitoredProcess]: Starting monitored process 9 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 06:57:09,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2025-03-09 06:57:09,247 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-03-09 06:57:09,265 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2025-03-09 06:57:09,265 INFO L474 LassoAnalysis]: Proved termination. [2025-03-09 06:57:09,265 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -1*ULTIMATE.start_main_~i~0#1 + 100000 Supporting invariants [] [2025-03-09 06:57:09,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2025-03-09 06:57:09,292 INFO L156 tatePredicateManager]: 8 out of 8 supporting invariants were superfluous and have been removed [2025-03-09 06:57:09,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:57:09,322 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-09 06:57:09,327 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-09 06:57:09,327 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:57:09,327 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:57:09,328 INFO L256 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-09 06:57:09,328 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:57:09,336 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 06:57:09,338 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 06:57:09,338 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:57:09,338 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:57:09,339 INFO L256 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 06:57:09,339 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:57:09,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:57:09,375 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-03-09 06:57:09,377 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 16 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 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) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 06:57:09,407 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 16 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 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). Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) Result 20 states and 29 transitions. Complement of second has 5 states. [2025-03-09 06:57:09,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2025-03-09 06:57:09,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 06:57:09,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2025-03-09 06:57:09,414 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 2 letters. Loop has 3 letters. [2025-03-09 06:57:09,414 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-09 06:57:09,414 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 3 letters. [2025-03-09 06:57:09,414 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-09 06:57:09,414 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 2 letters. Loop has 6 letters. [2025-03-09 06:57:09,414 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-09 06:57:09,415 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 29 transitions. [2025-03-09 06:57:09,415 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2025-03-09 06:57:09,417 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 15 states and 21 transitions. [2025-03-09 06:57:09,417 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2025-03-09 06:57:09,417 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2025-03-09 06:57:09,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 21 transitions. [2025-03-09 06:57:09,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-03-09 06:57:09,418 INFO L218 hiAutomatonCegarLoop]: Abstraction has 15 states and 21 transitions. [2025-03-09 06:57:09,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 21 transitions. [2025-03-09 06:57:09,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2025-03-09 06:57:09,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 13 states have internal predecessors, (20), 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 06:57:09,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 20 transitions. [2025-03-09 06:57:09,437 INFO L240 hiAutomatonCegarLoop]: Abstraction has 14 states and 20 transitions. [2025-03-09 06:57:09,437 INFO L432 stractBuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2025-03-09 06:57:09,437 INFO L338 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-03-09 06:57:09,437 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 20 transitions. [2025-03-09 06:57:09,439 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2025-03-09 06:57:09,439 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-03-09 06:57:09,439 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-03-09 06:57:09,440 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-03-09 06:57:09,440 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-03-09 06:57:09,440 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~mem2#1, main_#t~mem3#1, main_#t~mem4#1, main_~i~0#1, main_~#a~0#1.base, main_~#a~0#1.offset, main_~#b~0#1.base, main_~#b~0#1.offset;havoc main_~i~0#1;call main_~#a~0#1.base, main_~#a~0#1.offset := #Ultimate.allocOnStack(400000);call main_~#b~0#1.base, main_~#b~0#1.offset := #Ultimate.allocOnStack(400000);main_~i~0#1 := 0;" "assume !(main_~i~0#1 < 100000);main_~i~0#1 := 0;" [2025-03-09 06:57:09,440 INFO L754 eck$LassoCheckResult]: Loop: "assume main_~i~0#1 < 100000;call main_#t~mem3#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume !(10 == main_#t~mem3#1);havoc main_#t~mem3#1;" "main_~i~0#1 := 2 + main_~i~0#1;" [2025-03-09 06:57:09,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:57:09,441 INFO L85 PathProgramCache]: Analyzing trace with hash 48621, now seen corresponding path program 1 times [2025-03-09 06:57:09,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:57:09,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440326969] [2025-03-09 06:57:09,441 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:57:09,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:57:09,448 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 06:57:09,454 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 06:57:09,455 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:57:09,455 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:57:09,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:57:09,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:57:09,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440326969] [2025-03-09 06:57:09,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440326969] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:57:09,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:57:09,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:57:09,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009109575] [2025-03-09 06:57:09,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:57:09,515 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-03-09 06:57:09,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:57:09,516 INFO L85 PathProgramCache]: Analyzing trace with hash 41666, now seen corresponding path program 1 times [2025-03-09 06:57:09,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:57:09,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174607188] [2025-03-09 06:57:09,516 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:57:09,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:57:09,518 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 06:57:09,522 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 06:57:09,522 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:57:09,522 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:57:09,523 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 06:57:09,523 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 06:57:09,524 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 06:57:09,526 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:57:09,526 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:57:09,527 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 06:57:09,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:57:09,566 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:57:09,567 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:57:09,567 INFO L87 Difference]: Start difference. First operand 14 states and 20 transitions. cyclomatic complexity: 8 Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 06:57:09,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 06:57:09,586 INFO L93 Difference]: Finished difference Result 22 states and 27 transitions. [2025-03-09 06:57:09,586 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 27 transitions. [2025-03-09 06:57:09,586 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2025-03-09 06:57:09,587 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 18 states and 23 transitions. [2025-03-09 06:57:09,587 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2025-03-09 06:57:09,587 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2025-03-09 06:57:09,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 23 transitions. [2025-03-09 06:57:09,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-03-09 06:57:09,587 INFO L218 hiAutomatonCegarLoop]: Abstraction has 18 states and 23 transitions. [2025-03-09 06:57:09,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 23 transitions. [2025-03-09 06:57:09,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 11. [2025-03-09 06:57:09,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 states have internal predecessors, (14), 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 06:57:09,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2025-03-09 06:57:09,588 INFO L240 hiAutomatonCegarLoop]: Abstraction has 11 states and 14 transitions. [2025-03-09 06:57:09,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:57:09,589 INFO L432 stractBuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2025-03-09 06:57:09,589 INFO L338 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-03-09 06:57:09,589 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 14 transitions. [2025-03-09 06:57:09,589 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2025-03-09 06:57:09,589 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-03-09 06:57:09,589 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-03-09 06:57:09,590 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2025-03-09 06:57:09,590 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-03-09 06:57:09,590 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(18, 2);" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~mem2#1, main_#t~mem3#1, main_#t~mem4#1, main_~i~0#1, main_~#a~0#1.base, main_~#a~0#1.offset, main_~#b~0#1.base, main_~#b~0#1.offset;havoc main_~i~0#1;call main_~#a~0#1.base, main_~#a~0#1.offset := #Ultimate.allocOnStack(400000);call main_~#b~0#1.base, main_~#b~0#1.offset := #Ultimate.allocOnStack(400000);main_~i~0#1 := 0;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume !(main_~i~0#1 < 100000);main_~i~0#1 := 0;" [2025-03-09 06:57:09,590 INFO L754 eck$LassoCheckResult]: Loop: "assume main_~i~0#1 < 100000;call main_#t~mem3#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume !(10 == main_#t~mem3#1);havoc main_#t~mem3#1;" "main_~i~0#1 := 2 + main_~i~0#1;" [2025-03-09 06:57:09,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:57:09,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1448602237, now seen corresponding path program 1 times [2025-03-09 06:57:09,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:57:09,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907564619] [2025-03-09 06:57:09,590 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:57:09,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:57:09,594 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 06:57:09,598 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 06:57:09,598 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:57:09,598 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:57:09,642 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2025-03-09 06:57:09,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:57:09,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:57:09,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907564619] [2025-03-09 06:57:09,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907564619] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:57:09,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637040392] [2025-03-09 06:57:09,652 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:57:09,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:57:09,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:57:09,654 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:57:09,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-09 06:57:09,681 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 06:57:09,689 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 06:57:09,689 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:57:09,689 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:57:09,690 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 06:57:09,690 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:57:09,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:57:09,704 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:57:09,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:57:09,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637040392] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:57:09,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:57:09,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2025-03-09 06:57:09,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269673291] [2025-03-09 06:57:09,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:57:09,725 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-03-09 06:57:09,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:57:09,725 INFO L85 PathProgramCache]: Analyzing trace with hash 41666, now seen corresponding path program 2 times [2025-03-09 06:57:09,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:57:09,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187377528] [2025-03-09 06:57:09,725 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:57:09,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:57:09,729 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 3 statements into 1 equivalence classes. [2025-03-09 06:57:09,732 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 06:57:09,732 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:57:09,732 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:57:09,732 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 06:57:09,733 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 06:57:09,735 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 06:57:09,735 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:57:09,735 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:57:09,736 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 06:57:09,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:57:09,778 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-09 06:57:09,778 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-09 06:57:09,778 INFO L87 Difference]: Start difference. First operand 11 states and 14 transitions. cyclomatic complexity: 5 Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 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 06:57:09,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 06:57:09,817 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2025-03-09 06:57:09,817 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 45 transitions. [2025-03-09 06:57:09,818 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2025-03-09 06:57:09,818 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 36 states and 45 transitions. [2025-03-09 06:57:09,818 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2025-03-09 06:57:09,818 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2025-03-09 06:57:09,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 45 transitions. [2025-03-09 06:57:09,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-03-09 06:57:09,818 INFO L218 hiAutomatonCegarLoop]: Abstraction has 36 states and 45 transitions. [2025-03-09 06:57:09,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 45 transitions. [2025-03-09 06:57:09,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 20. [2025-03-09 06:57:09,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 20 states have (on average 1.3) internal successors, (26), 19 states have internal predecessors, (26), 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 06:57:09,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2025-03-09 06:57:09,820 INFO L240 hiAutomatonCegarLoop]: Abstraction has 20 states and 26 transitions. [2025-03-09 06:57:09,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:57:09,821 INFO L432 stractBuchiCegarLoop]: Abstraction has 20 states and 26 transitions. [2025-03-09 06:57:09,821 INFO L338 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-03-09 06:57:09,822 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 26 transitions. [2025-03-09 06:57:09,822 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2025-03-09 06:57:09,822 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-03-09 06:57:09,822 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-03-09 06:57:09,822 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 4, 4, 1, 1, 1] [2025-03-09 06:57:09,822 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-03-09 06:57:09,822 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(18, 2);" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~mem2#1, main_#t~mem3#1, main_#t~mem4#1, main_~i~0#1, main_~#a~0#1.base, main_~#a~0#1.offset, main_~#b~0#1.base, main_~#b~0#1.offset;havoc main_~i~0#1;call main_~#a~0#1.base, main_~#a~0#1.offset := #Ultimate.allocOnStack(400000);call main_~#b~0#1.base, main_~#b~0#1.offset := #Ultimate.allocOnStack(400000);main_~i~0#1 := 0;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume !(main_~i~0#1 < 100000);main_~i~0#1 := 0;" [2025-03-09 06:57:09,822 INFO L754 eck$LassoCheckResult]: Loop: "assume main_~i~0#1 < 100000;call main_#t~mem3#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume !(10 == main_#t~mem3#1);havoc main_#t~mem3#1;" "main_~i~0#1 := 2 + main_~i~0#1;" [2025-03-09 06:57:09,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:57:09,823 INFO L85 PathProgramCache]: Analyzing trace with hash 301214189, now seen corresponding path program 2 times [2025-03-09 06:57:09,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:57:09,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766269396] [2025-03-09 06:57:09,823 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:57:09,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:57:09,833 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-03-09 06:57:09,848 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 06:57:09,848 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 06:57:09,848 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:57:09,950 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:57:09,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:57:09,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766269396] [2025-03-09 06:57:09,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766269396] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:57:09,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438464190] [2025-03-09 06:57:09,951 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:57:09,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:57:09,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:57:09,953 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:57:09,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-09 06:57:09,986 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-03-09 06:57:10,004 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 06:57:10,005 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 06:57:10,005 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:57:10,006 INFO L256 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 06:57:10,006 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:57:10,027 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:57:10,027 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:57:10,081 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:57:10,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438464190] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:57:10,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:57:10,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2025-03-09 06:57:10,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935737052] [2025-03-09 06:57:10,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:57:10,082 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-03-09 06:57:10,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:57:10,082 INFO L85 PathProgramCache]: Analyzing trace with hash 41666, now seen corresponding path program 3 times [2025-03-09 06:57:10,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:57:10,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357551829] [2025-03-09 06:57:10,083 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 06:57:10,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:57:10,086 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 3 statements into 1 equivalence classes. [2025-03-09 06:57:10,087 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 06:57:10,087 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-09 06:57:10,087 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:57:10,087 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 06:57:10,087 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 06:57:10,088 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 06:57:10,088 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:57:10,088 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:57:10,089 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 06:57:10,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:57:10,127 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-09 06:57:10,127 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-03-09 06:57:10,128 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. cyclomatic complexity: 8 Second operand has 13 states, 12 states have (on average 2.75) internal successors, (33), 13 states have internal predecessors, (33), 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 06:57:10,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 06:57:10,232 INFO L93 Difference]: Finished difference Result 84 states and 105 transitions. [2025-03-09 06:57:10,232 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 84 states and 105 transitions. [2025-03-09 06:57:10,233 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2025-03-09 06:57:10,234 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 84 states to 84 states and 105 transitions. [2025-03-09 06:57:10,234 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 54 [2025-03-09 06:57:10,234 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 54 [2025-03-09 06:57:10,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 105 transitions. [2025-03-09 06:57:10,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-03-09 06:57:10,234 INFO L218 hiAutomatonCegarLoop]: Abstraction has 84 states and 105 transitions. [2025-03-09 06:57:10,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states and 105 transitions. [2025-03-09 06:57:10,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 38. [2025-03-09 06:57:10,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 38 states have (on average 1.3157894736842106) internal successors, (50), 37 states have internal predecessors, (50), 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 06:57:10,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 50 transitions. [2025-03-09 06:57:10,241 INFO L240 hiAutomatonCegarLoop]: Abstraction has 38 states and 50 transitions. [2025-03-09 06:57:10,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-09 06:57:10,242 INFO L432 stractBuchiCegarLoop]: Abstraction has 38 states and 50 transitions. [2025-03-09 06:57:10,242 INFO L338 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2025-03-09 06:57:10,242 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 38 states and 50 transitions. [2025-03-09 06:57:10,242 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2025-03-09 06:57:10,243 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-03-09 06:57:10,243 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-03-09 06:57:10,243 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [10, 10, 10, 1, 1, 1] [2025-03-09 06:57:10,244 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-03-09 06:57:10,245 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(18, 2);" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~mem2#1, main_#t~mem3#1, main_#t~mem4#1, main_~i~0#1, main_~#a~0#1.base, main_~#a~0#1.offset, main_~#b~0#1.base, main_~#b~0#1.offset;havoc main_~i~0#1;call main_~#a~0#1.base, main_~#a~0#1.offset := #Ultimate.allocOnStack(400000);call main_~#b~0#1.base, main_~#b~0#1.offset := #Ultimate.allocOnStack(400000);main_~i~0#1 := 0;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume !(main_~i~0#1 < 100000);main_~i~0#1 := 0;" [2025-03-09 06:57:10,246 INFO L754 eck$LassoCheckResult]: Loop: "assume main_~i~0#1 < 100000;call main_#t~mem3#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume !(10 == main_#t~mem3#1);havoc main_#t~mem3#1;" "main_~i~0#1 := 2 + main_~i~0#1;" [2025-03-09 06:57:10,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:57:10,246 INFO L85 PathProgramCache]: Analyzing trace with hash 235244525, now seen corresponding path program 3 times [2025-03-09 06:57:10,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:57:10,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826591477] [2025-03-09 06:57:10,246 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 06:57:10,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:57:10,262 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 33 statements into 11 equivalence classes. [2025-03-09 06:57:10,306 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 33 of 33 statements. [2025-03-09 06:57:10,306 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-03-09 06:57:10,306 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:57:10,513 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:57:10,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:57:10,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826591477] [2025-03-09 06:57:10,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826591477] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:57:10,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561636298] [2025-03-09 06:57:10,513 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 06:57:10,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:57:10,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:57:10,516 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:57:10,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-09 06:57:10,554 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 33 statements into 11 equivalence classes. [2025-03-09 06:57:11,022 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 33 of 33 statements. [2025-03-09 06:57:11,022 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-03-09 06:57:11,023 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:57:11,025 INFO L256 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-09 06:57:11,026 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:57:11,073 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:57:11,073 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:57:11,259 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:57:11,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561636298] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:57:11,260 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:57:11,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2025-03-09 06:57:11,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549961510] [2025-03-09 06:57:11,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:57:11,260 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-03-09 06:57:11,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:57:11,261 INFO L85 PathProgramCache]: Analyzing trace with hash 41666, now seen corresponding path program 4 times [2025-03-09 06:57:11,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:57:11,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322155847] [2025-03-09 06:57:11,261 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 06:57:11,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:57:11,263 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 3 statements into 2 equivalence classes. [2025-03-09 06:57:11,265 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 06:57:11,265 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-09 06:57:11,265 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:57:11,265 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 06:57:11,265 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 06:57:11,266 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 06:57:11,266 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:57:11,266 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:57:11,267 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 06:57:11,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:57:11,315 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-03-09 06:57:11,316 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-03-09 06:57:11,316 INFO L87 Difference]: Start difference. First operand 38 states and 50 transitions. cyclomatic complexity: 14 Second operand has 25 states, 24 states have (on average 2.875) internal successors, (69), 25 states have internal predecessors, (69), 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 06:57:11,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 06:57:11,505 INFO L93 Difference]: Finished difference Result 180 states and 225 transitions. [2025-03-09 06:57:11,505 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 180 states and 225 transitions. [2025-03-09 06:57:11,507 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2025-03-09 06:57:11,510 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 180 states to 180 states and 225 transitions. [2025-03-09 06:57:11,510 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 114 [2025-03-09 06:57:11,510 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 114 [2025-03-09 06:57:11,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 180 states and 225 transitions. [2025-03-09 06:57:11,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-03-09 06:57:11,511 INFO L218 hiAutomatonCegarLoop]: Abstraction has 180 states and 225 transitions. [2025-03-09 06:57:11,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states and 225 transitions. [2025-03-09 06:57:11,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 74. [2025-03-09 06:57:11,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 74 states have (on average 1.3243243243243243) internal successors, (98), 73 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) [2025-03-09 06:57:11,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 98 transitions. [2025-03-09 06:57:11,518 INFO L240 hiAutomatonCegarLoop]: Abstraction has 74 states and 98 transitions. [2025-03-09 06:57:11,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-03-09 06:57:11,519 INFO L432 stractBuchiCegarLoop]: Abstraction has 74 states and 98 transitions. [2025-03-09 06:57:11,519 INFO L338 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2025-03-09 06:57:11,519 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 74 states and 98 transitions. [2025-03-09 06:57:11,520 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2025-03-09 06:57:11,520 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-03-09 06:57:11,520 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-03-09 06:57:11,521 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [22, 22, 22, 1, 1, 1] [2025-03-09 06:57:11,521 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-03-09 06:57:11,521 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(18, 2);" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~mem2#1, main_#t~mem3#1, main_#t~mem4#1, main_~i~0#1, main_~#a~0#1.base, main_~#a~0#1.offset, main_~#b~0#1.base, main_~#b~0#1.offset;havoc main_~i~0#1;call main_~#a~0#1.base, main_~#a~0#1.offset := #Ultimate.allocOnStack(400000);call main_~#b~0#1.base, main_~#b~0#1.offset := #Ultimate.allocOnStack(400000);main_~i~0#1 := 0;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume !(main_~i~0#1 < 100000);main_~i~0#1 := 0;" [2025-03-09 06:57:11,523 INFO L754 eck$LassoCheckResult]: Loop: "assume main_~i~0#1 < 100000;call main_#t~mem3#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume !(10 == main_#t~mem3#1);havoc main_#t~mem3#1;" "main_~i~0#1 := 2 + main_~i~0#1;" [2025-03-09 06:57:11,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:57:11,524 INFO L85 PathProgramCache]: Analyzing trace with hash 130732013, now seen corresponding path program 4 times [2025-03-09 06:57:11,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:57:11,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584620017] [2025-03-09 06:57:11,524 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 06:57:11,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:57:11,549 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 69 statements into 2 equivalence classes. [2025-03-09 06:57:11,565 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 69 of 69 statements. [2025-03-09 06:57:11,565 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-09 06:57:11,565 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:57:12,141 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:57:12,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:57:12,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584620017] [2025-03-09 06:57:12,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584620017] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:57:12,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211588137] [2025-03-09 06:57:12,141 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 06:57:12,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:57:12,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:57:12,143 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:57:12,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-09 06:57:12,199 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 69 statements into 2 equivalence classes. [2025-03-09 06:57:12,248 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 69 of 69 statements. [2025-03-09 06:57:12,248 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-09 06:57:12,248 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:57:12,250 INFO L256 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-03-09 06:57:12,253 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:57:12,378 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:57:12,378 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:57:12,984 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:57:12,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211588137] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:57:12,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:57:12,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2025-03-09 06:57:12,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590343555] [2025-03-09 06:57:12,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:57:12,985 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-03-09 06:57:12,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:57:12,985 INFO L85 PathProgramCache]: Analyzing trace with hash 41666, now seen corresponding path program 5 times [2025-03-09 06:57:12,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:57:12,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746482789] [2025-03-09 06:57:12,985 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 06:57:12,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:57:12,988 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 3 statements into 1 equivalence classes. [2025-03-09 06:57:12,989 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 06:57:12,989 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:57:12,989 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:57:12,989 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 06:57:12,990 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 06:57:12,991 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 06:57:12,991 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:57:12,991 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:57:12,992 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 06:57:13,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:57:13,024 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2025-03-09 06:57:13,025 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2025-03-09 06:57:13,025 INFO L87 Difference]: Start difference. First operand 74 states and 98 transitions. cyclomatic complexity: 26 Second operand has 48 states, 47 states have (on average 2.9148936170212765) internal successors, (137), 48 states have internal predecessors, (137), 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 06:57:13,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 06:57:13,509 INFO L93 Difference]: Finished difference Result 372 states and 465 transitions. [2025-03-09 06:57:13,510 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 372 states and 465 transitions. [2025-03-09 06:57:13,516 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2025-03-09 06:57:13,518 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 372 states to 372 states and 465 transitions. [2025-03-09 06:57:13,518 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 234 [2025-03-09 06:57:13,518 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 234 [2025-03-09 06:57:13,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 372 states and 465 transitions. [2025-03-09 06:57:13,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-03-09 06:57:13,519 INFO L218 hiAutomatonCegarLoop]: Abstraction has 372 states and 465 transitions. [2025-03-09 06:57:13,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states and 465 transitions. [2025-03-09 06:57:13,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 146. [2025-03-09 06:57:13,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 146 states have (on average 1.3287671232876712) internal successors, (194), 145 states have internal predecessors, (194), 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 06:57:13,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 194 transitions. [2025-03-09 06:57:13,533 INFO L240 hiAutomatonCegarLoop]: Abstraction has 146 states and 194 transitions. [2025-03-09 06:57:13,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-03-09 06:57:13,535 INFO L432 stractBuchiCegarLoop]: Abstraction has 146 states and 194 transitions. [2025-03-09 06:57:13,535 INFO L338 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2025-03-09 06:57:13,535 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 146 states and 194 transitions. [2025-03-09 06:57:13,536 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2025-03-09 06:57:13,536 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-03-09 06:57:13,536 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-03-09 06:57:13,542 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [46, 46, 46, 1, 1, 1] [2025-03-09 06:57:13,543 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-03-09 06:57:13,543 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(18, 2);" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~mem2#1, main_#t~mem3#1, main_#t~mem4#1, main_~i~0#1, main_~#a~0#1.base, main_~#a~0#1.offset, main_~#b~0#1.base, main_~#b~0#1.offset;havoc main_~i~0#1;call main_~#a~0#1.base, main_~#a~0#1.offset := #Ultimate.allocOnStack(400000);call main_~#b~0#1.base, main_~#b~0#1.offset := #Ultimate.allocOnStack(400000);main_~i~0#1 := 0;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume main_~i~0#1 < 100000;havoc main_#t~nondet1#1;call write~int#1(main_#t~nondet1#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet1#1;call main_#t~mem2#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume 10 == main_#t~mem2#1;havoc main_#t~mem2#1;call write~int#2(20, main_~#b~0#1.base, main_~#b~0#1.offset + 4 * main_~i~0#1, 4);" "main_~i~0#1 := 2 + main_~i~0#1;" "assume !(main_~i~0#1 < 100000);main_~i~0#1 := 0;" [2025-03-09 06:57:13,544 INFO L754 eck$LassoCheckResult]: Loop: "assume main_~i~0#1 < 100000;call main_#t~mem3#1 := read~int#1(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);" "assume !(10 == main_#t~mem3#1);havoc main_#t~mem3#1;" "main_~i~0#1 := 2 + main_~i~0#1;" [2025-03-09 06:57:13,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:57:13,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1117825043, now seen corresponding path program 5 times [2025-03-09 06:57:13,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:57:13,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973814216] [2025-03-09 06:57:13,545 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 06:57:13,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:57:13,592 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 141 statements into 47 equivalence classes. [2025-03-09 06:57:13,768 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) and asserted 141 of 141 statements. [2025-03-09 06:57:13,768 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2025-03-09 06:57:13,768 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:57:15,545 INFO L134 CoverageAnalysis]: Checked inductivity of 3151 backedges. 0 proven. 3151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:57:15,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:57:15,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973814216] [2025-03-09 06:57:15,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973814216] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:57:15,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789835981] [2025-03-09 06:57:15,545 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 06:57:15,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:57:15,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:57:15,547 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:57:15,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-09 06:57:15,635 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 141 statements into 47 equivalence classes.