./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/filter_iir.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/filter_iir.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8140822ac5d36d3dbe917657ea1276e86420f348faa7d4310d2cd40fc22f39e9 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 02:45:56,468 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 02:45:56,519 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 02:45:56,523 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 02:45:56,527 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 02:45:56,548 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 02:45:56,549 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 02:45:56,549 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 02:45:56,550 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 02:45:56,550 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 02:45:56,550 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 02:45:56,551 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 02:45:56,552 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 02:45:56,552 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 02:45:56,552 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 02:45:56,552 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 02:45:56,552 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 02:45:56,552 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 02:45:56,552 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 02:45:56,552 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 02:45:56,552 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 02:45:56,552 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 02:45:56,552 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 02:45:56,552 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 02:45:56,553 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 02:45:56,553 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 02:45:56,553 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 02:45:56,553 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 02:45:56,553 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 02:45:56,553 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 02:45:56,553 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 02:45:56,554 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 02:45:56,554 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 02:45:56,554 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 02:45:56,555 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 02:45:56,555 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 02:45:56,555 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 02:45:56,555 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 02:45:56,555 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 02:45:56,555 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 02:45:56,555 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 02:45:56,555 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 02:45:56,555 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 02:45:56,555 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8140822ac5d36d3dbe917657ea1276e86420f348faa7d4310d2cd40fc22f39e9 [2025-03-08 02:45:56,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 02:45:56,780 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 02:45:56,781 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 02:45:56,782 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 02:45:56,782 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 02:45:56,783 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/filter_iir.c [2025-03-08 02:45:57,972 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/700510a01/9476769175804d84a8d712e4d6e11d3a/FLAGe4eb0f0b8 [2025-03-08 02:45:58,201 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 02:45:58,206 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/filter_iir.c [2025-03-08 02:45:58,213 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/700510a01/9476769175804d84a8d712e4d6e11d3a/FLAGe4eb0f0b8 [2025-03-08 02:45:58,541 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/700510a01/9476769175804d84a8d712e4d6e11d3a [2025-03-08 02:45:58,543 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 02:45:58,544 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 02:45:58,547 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 02:45:58,547 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 02:45:58,550 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 02:45:58,550 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 02:45:58" (1/1) ... [2025-03-08 02:45:58,550 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7750b596 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:45:58, skipping insertion in model container [2025-03-08 02:45:58,551 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 02:45:58" (1/1) ... [2025-03-08 02:45:58,560 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 02:45:58,651 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/filter_iir.c[583,596] [2025-03-08 02:45:58,677 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 02:45:58,688 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 02:45:58,696 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/filter_iir.c[583,596] [2025-03-08 02:45:58,705 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 02:45:58,719 INFO L204 MainTranslator]: Completed translation [2025-03-08 02:45:58,719 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:45:58 WrapperNode [2025-03-08 02:45:58,720 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 02:45:58,720 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 02:45:58,720 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 02:45:58,720 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 02:45:58,726 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:45:58" (1/1) ... [2025-03-08 02:45:58,733 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:45:58" (1/1) ... [2025-03-08 02:45:58,757 INFO L138 Inliner]: procedures = 18, calls = 70, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 137 [2025-03-08 02:45:58,757 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 02:45:58,758 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 02:45:58,758 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 02:45:58,758 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 02:45:58,764 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:45:58" (1/1) ... [2025-03-08 02:45:58,764 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:45:58" (1/1) ... [2025-03-08 02:45:58,766 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:45:58" (1/1) ... [2025-03-08 02:45:58,783 INFO L175 MemorySlicer]: Split 54 memory accesses to 9 slices as follows [2, 6, 4, 6, 4, 11, 11, 5, 5]. 20 percent of accesses are in the largest equivalence class. The 18 initializations are split as follows [2, 3, 2, 3, 2, 2, 2, 1, 1]. The 11 writes are split as follows [0, 0, 0, 0, 0, 4, 4, 2, 1]. [2025-03-08 02:45:58,783 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:45:58" (1/1) ... [2025-03-08 02:45:58,783 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:45:58" (1/1) ... [2025-03-08 02:45:58,791 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:45:58" (1/1) ... [2025-03-08 02:45:58,792 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:45:58" (1/1) ... [2025-03-08 02:45:58,793 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:45:58" (1/1) ... [2025-03-08 02:45:58,794 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:45:58" (1/1) ... [2025-03-08 02:45:58,796 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 02:45:58,797 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 02:45:58,797 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 02:45:58,797 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 02:45:58,798 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:45:58" (1/1) ... [2025-03-08 02:45:58,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 02:45:58,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 02:45:58,829 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 02:45:58,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-08 02:45:58,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 02:45:58,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 02:45:58,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-08 02:45:58,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-08 02:45:58,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-08 02:45:58,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-08 02:45:58,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-08 02:45:58,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-08 02:45:58,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-03-08 02:45:58,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-03-08 02:45:58,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2025-03-08 02:45:58,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2025-03-08 02:45:58,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2025-03-08 02:45:58,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2025-03-08 02:45:58,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2025-03-08 02:45:58,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2025-03-08 02:45:58,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2025-03-08 02:45:58,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2025-03-08 02:45:58,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2025-03-08 02:45:58,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2025-03-08 02:45:58,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2025-03-08 02:45:58,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2025-03-08 02:45:58,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2025-03-08 02:45:58,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2025-03-08 02:45:58,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#5 [2025-03-08 02:45:58,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#6 [2025-03-08 02:45:58,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#7 [2025-03-08 02:45:58,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#8 [2025-03-08 02:45:58,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 02:45:58,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 02:45:58,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2025-03-08 02:45:58,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2025-03-08 02:45:58,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2025-03-08 02:45:58,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2025-03-08 02:45:58,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2025-03-08 02:45:58,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#5 [2025-03-08 02:45:58,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#6 [2025-03-08 02:45:58,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#7 [2025-03-08 02:45:58,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#8 [2025-03-08 02:45:58,948 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 02:45:58,949 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 02:45:59,058 INFO L? ?]: Removed 23 outVars from TransFormulas that were not future-live. [2025-03-08 02:45:59,058 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 02:45:59,065 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 02:45:59,066 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 02:45:59,066 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 02:45:59 BoogieIcfgContainer [2025-03-08 02:45:59,066 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 02:45:59,067 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 02:45:59,068 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 02:45:59,071 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 02:45:59,071 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 02:45:58" (1/3) ... [2025-03-08 02:45:59,072 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@489e3b7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 02:45:59, skipping insertion in model container [2025-03-08 02:45:59,072 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:45:58" (2/3) ... [2025-03-08 02:45:59,072 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@489e3b7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 02:45:59, skipping insertion in model container [2025-03-08 02:45:59,073 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 02:45:59" (3/3) ... [2025-03-08 02:45:59,073 INFO L128 eAbstractionObserver]: Analyzing ICFG filter_iir.c [2025-03-08 02:45:59,082 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 02:45:59,084 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG filter_iir.c that has 1 procedures, 17 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 02:45:59,126 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 02:45:59,133 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@14a2856b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 02:45:59,134 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 02:45:59,136 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.4) internal successors, (21), 16 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) [2025-03-08 02:45:59,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-03-08 02:45:59,140 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:45:59,140 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 02:45:59,141 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:45:59,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:45:59,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1518786887, now seen corresponding path program 1 times [2025-03-08 02:45:59,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:45:59,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939065459] [2025-03-08 02:45:59,152 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:45:59,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:45:59,235 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-08 02:45:59,267 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-08 02:45:59,268 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:45:59,268 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:45:59,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 02:45:59,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:45:59,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939065459] [2025-03-08 02:45:59,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939065459] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:45:59,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 02:45:59,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 02:45:59,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936446625] [2025-03-08 02:45:59,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:45:59,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 02:45:59,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:45:59,373 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 02:45:59,374 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 02:45:59,376 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.4) internal successors, (21), 16 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 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2025-03-08 02:45:59,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:45:59,384 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2025-03-08 02:45:59,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 02:45:59,385 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) Word has length 12 [2025-03-08 02:45:59,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:45:59,389 INFO L225 Difference]: With dead ends: 29 [2025-03-08 02:45:59,389 INFO L226 Difference]: Without dead ends: 14 [2025-03-08 02:45:59,392 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 02:45:59,394 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 02:45:59,396 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 02:45:59,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2025-03-08 02:45:59,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2025-03-08 02:45:59,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 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) [2025-03-08 02:45:59,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2025-03-08 02:45:59,413 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 12 [2025-03-08 02:45:59,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:45:59,414 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2025-03-08 02:45:59,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2025-03-08 02:45:59,414 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2025-03-08 02:45:59,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-03-08 02:45:59,414 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:45:59,414 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 02:45:59,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 02:45:59,415 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:45:59,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:45:59,416 INFO L85 PathProgramCache]: Analyzing trace with hash -631283206, now seen corresponding path program 1 times [2025-03-08 02:45:59,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:45:59,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888861781] [2025-03-08 02:45:59,416 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:45:59,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:45:59,443 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-08 02:45:59,471 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-08 02:45:59,472 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:45:59,472 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-08 02:45:59,472 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-08 02:45:59,480 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-08 02:45:59,516 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-08 02:45:59,516 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:45:59,516 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-08 02:45:59,545 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-08 02:45:59,545 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-08 02:45:59,546 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-03-08 02:45:59,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 02:45:59,551 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-08 02:45:59,582 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-08 02:45:59,585 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.03 02:45:59 BoogieIcfgContainer [2025-03-08 02:45:59,585 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-08 02:45:59,585 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-08 02:45:59,585 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-08 02:45:59,585 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-08 02:45:59,586 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 02:45:59" (3/4) ... [2025-03-08 02:45:59,588 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-03-08 02:45:59,589 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-08 02:45:59,589 INFO L158 Benchmark]: Toolchain (without parser) took 1045.37ms. Allocated memory is still 167.8MB. Free memory was 123.6MB in the beginning and 54.2MB in the end (delta: 69.3MB). Peak memory consumption was 67.1MB. Max. memory is 16.1GB. [2025-03-08 02:45:59,590 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 201.3MB. Free memory is still 120.1MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 02:45:59,590 INFO L158 Benchmark]: CACSL2BoogieTranslator took 173.19ms. Allocated memory is still 167.8MB. Free memory was 123.1MB in the beginning and 111.3MB in the end (delta: 11.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-08 02:45:59,591 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.88ms. Allocated memory is still 167.8MB. Free memory was 111.3MB in the beginning and 109.6MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 02:45:59,592 INFO L158 Benchmark]: Boogie Preprocessor took 38.73ms. Allocated memory is still 167.8MB. Free memory was 109.6MB in the beginning and 107.2MB in the end (delta: 2.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-08 02:45:59,593 INFO L158 Benchmark]: IcfgBuilder took 269.12ms. Allocated memory is still 167.8MB. Free memory was 107.2MB in the beginning and 92.1MB in the end (delta: 15.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-08 02:45:59,594 INFO L158 Benchmark]: TraceAbstraction took 517.26ms. Allocated memory is still 167.8MB. Free memory was 91.7MB in the beginning and 54.2MB in the end (delta: 37.4MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-03-08 02:45:59,594 INFO L158 Benchmark]: Witness Printer took 3.41ms. Allocated memory is still 167.8MB. Free memory is still 54.2MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 02:45:59,595 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 201.3MB. Free memory is still 120.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 173.19ms. Allocated memory is still 167.8MB. Free memory was 123.1MB in the beginning and 111.3MB in the end (delta: 11.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.88ms. Allocated memory is still 167.8MB. Free memory was 111.3MB in the beginning and 109.6MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 38.73ms. Allocated memory is still 167.8MB. Free memory was 109.6MB in the beginning and 107.2MB in the end (delta: 2.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 269.12ms. Allocated memory is still 167.8MB. Free memory was 107.2MB in the beginning and 92.1MB in the end (delta: 15.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 517.26ms. Allocated memory is still 167.8MB. Free memory was 91.7MB in the beginning and 54.2MB in the end (delta: 37.4MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Witness Printer took 3.41ms. Allocated memory is still 167.8MB. Free memory is still 54.2MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 13]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryArithmeticDOUBLEoperation at line 28, overapproximation of someBinaryDOUBLEComparisonOperation at line 54, overapproximation of someBinaryDOUBLEComparisonOperation at line 50, overapproximation of someBinaryDOUBLEComparisonOperation at line 50, overapproximation of someBinaryDOUBLEComparisonOperation at line 54, overapproximation of to_real at line 16. Possible FailurePath: [L16] double A1[3] = { 1, 0.5179422053046, 1.0 }; [L16] double A1[3] = { 1, 0.5179422053046, 1.0 }; [L16] double A1[3] = { 1, 0.5179422053046, 1.0 }; [L16] double A1[3] = { 1, 0.5179422053046, 1.0 }; [L17] double b1[2] = { 1.470767736573, 0.5522073405779 }; [L17] double b1[2] = { 1.470767736573, 0.5522073405779 }; [L17] double b1[2] = { 1.470767736573, 0.5522073405779 }; [L18] double A2[3] = { 1, 1.633101801841, 1.0 }; [L18] double A2[3] = { 1, 1.633101801841, 1.0 }; [L18] double A2[3] = { 1, 1.633101801841, 1.0 }; [L18] double A2[3] = { 1, 1.633101801841, 1.0 }; [L19] double b2[2] = { 1.742319554830, 0.820939679242 }; [L19] double b2[2] = { 1.742319554830, 0.820939679242 }; [L19] double b2[2] = { 1.742319554830, 0.820939679242 }; [L21] double D1[2], D2[2]; [L21] double D1[2], D2[2]; [L21] double D1[2], D2[2]; [L21] double D1[2], D2[2]; [L21] double D1[2], D2[2]; [L21] double D1[2], D2[2]; [L22] double P, X; [L22] double P, X; [L22] double P, X; [L22] double P, X; VAL [A1={4:0}, A2={6:0}, D1={8:0}, D2={9:0}, P={10:0}, X={11:0}, b1={5:0}, b2={7:0}] [L43] D1[0] = 0. [L43] D1[1] = 0. [L44] D2[0] = 0. [L44] D2[1] = 0. [L45] P = 0. VAL [A1={4:0}, A2={6:0}, D1={8:0}, D2={9:0}, P={10:0}, X={11:0}, b1={5:0}, b2={7:0}] [L47] COND TRUE 1 [L49] X = __VERIFIER_nondet_double() [L50] EXPR \read(X) [L50] EXPR X >= -10. && X <= 10. VAL [A1={4:0}, A2={6:0}, D1={8:0}, D2={9:0}, P={10:0}, X={11:0}, b1={5:0}, b2={7:0}] [L50] EXPR X >= -10. && X <= 10. [L50] EXPR \read(X) [L50] EXPR X >= -10. && X <= 10. VAL [A1={4:0}, A2={6:0}, D1={8:0}, D2={9:0}, P={10:0}, X={11:0}, b1={5:0}, b2={7:0}] [L50] CALL assume_abort_if_not(X >= -10. && X <= 10.) [L11] COND FALSE !(!cond) VAL [A1={4:0}, A2={6:0}, D1={8:0}, D2={9:0}, P={10:0}, X={11:0}, b1={5:0}, b2={7:0}] [L50] RET assume_abort_if_not(X >= -10. && X <= 10.) [L52] CALL iir4(&X, &P) [L26] double x1, y1, t1, t2; [L28] EXPR \read(*x) [L28] x1 = 0.0117749388721091 * *x [L30] EXPR b1[0] [L30] EXPR D1[0] [L30] EXPR b1[1] [L30] EXPR D1[1] [L30] t1 = x1 + b1[0]*D1[0] - b1[1]*D1[1] [L31] EXPR A1[0] [L31] EXPR A1[1] [L31] EXPR D1[0] [L31] EXPR A1[2] [L31] EXPR D1[1] [L31] y1 = A1[0]*t1 - A1[1]*D1[0] + A1[2]*D1[1] [L32] EXPR D1[0] [L32] D1[1] = D1[0] [L33] D1[0] = t1 [L35] EXPR b2[0] [L35] EXPR D2[0] [L35] EXPR b2[1] [L35] EXPR D2[1] [L35] t2 = y1 + b2[0]*D2[0] - b2[1]*D2[1] [L36] EXPR A2[0] [L36] EXPR A2[1] [L36] EXPR D2[0] [L36] EXPR A2[2] [L36] EXPR D2[1] [L36] *y = A2[0]*t2 - A2[1]*D2[0] + A2[2]*D2[1] [L37] EXPR D2[0] [L37] D2[1] = D2[0] [L38] D2[0] = t2 VAL [A1={4:0}, A2={6:0}, D1={8:0}, D2={9:0}, P={10:0}, X={11:0}, b1={5:0}, b2={7:0}] [L52] RET iir4(&X, &P) [L54] EXPR \read(P) [L54] EXPR P >= -1e30 && P <= 1e30 VAL [A1={4:0}, A2={6:0}, D1={8:0}, D2={9:0}, P={10:0}, X={11:0}, b1={5:0}, b2={7:0}] [L54] EXPR P >= -1e30 && P <= 1e30 [L54] EXPR \read(P) [L54] EXPR P >= -1e30 && P <= 1e30 VAL [A1={4:0}, A2={6:0}, D1={8:0}, D2={9:0}, P={10:0}, X={11:0}, b1={5:0}, b2={7:0}] [L54] CALL __VERIFIER_assert(P >= -1e30 && P <= 1e30) [L13] COND TRUE !(cond) VAL [A1={4:0}, A2={6:0}, D1={8:0}, D2={9:0}, P={10:0}, X={11:0}, b1={5:0}, b2={7:0}] [L13] reach_error() VAL [A1={4:0}, A2={6:0}, D1={8:0}, D2={9:0}, P={10:0}, X={11:0}, b1={5:0}, b2={7:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 21 edges, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 16 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 16 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 11 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-03-08 02:45:59,609 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/filter_iir.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8140822ac5d36d3dbe917657ea1276e86420f348faa7d4310d2cd40fc22f39e9 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 02:46:01,443 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 02:46:01,510 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2025-03-08 02:46:01,518 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 02:46:01,518 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 02:46:01,544 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 02:46:01,544 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 02:46:01,544 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 02:46:01,545 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 02:46:01,545 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 02:46:01,545 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 02:46:01,545 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 02:46:01,545 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 02:46:01,545 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 02:46:01,545 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 02:46:01,545 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 02:46:01,545 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 02:46:01,545 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 02:46:01,545 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 02:46:01,545 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 02:46:01,545 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 02:46:01,545 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 02:46:01,545 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 02:46:01,546 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-08 02:46:01,546 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-08 02:46:01,546 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-08 02:46:01,546 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 02:46:01,546 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 02:46:01,546 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 02:46:01,546 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 02:46:01,546 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 02:46:01,546 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 02:46:01,546 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 02:46:01,546 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 02:46:01,546 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 02:46:01,546 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 02:46:01,546 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 02:46:01,546 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 02:46:01,546 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 02:46:01,546 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-08 02:46:01,546 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-08 02:46:01,546 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 02:46:01,546 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 02:46:01,547 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 02:46:01,547 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 02:46:01,547 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8140822ac5d36d3dbe917657ea1276e86420f348faa7d4310d2cd40fc22f39e9 [2025-03-08 02:46:01,764 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 02:46:01,771 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 02:46:01,773 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 02:46:01,775 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 02:46:01,775 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 02:46:01,776 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/filter_iir.c [2025-03-08 02:46:02,927 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c705638f7/0a97f7748fb04d7299d953be292cc94b/FLAGa5e3c0336 [2025-03-08 02:46:03,128 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 02:46:03,129 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/filter_iir.c [2025-03-08 02:46:03,136 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c705638f7/0a97f7748fb04d7299d953be292cc94b/FLAGa5e3c0336 [2025-03-08 02:46:03,156 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c705638f7/0a97f7748fb04d7299d953be292cc94b [2025-03-08 02:46:03,162 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 02:46:03,163 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 02:46:03,165 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 02:46:03,165 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 02:46:03,169 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 02:46:03,170 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 02:46:03" (1/1) ... [2025-03-08 02:46:03,171 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12494dd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:46:03, skipping insertion in model container [2025-03-08 02:46:03,172 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 02:46:03" (1/1) ... [2025-03-08 02:46:03,185 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 02:46:03,307 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/filter_iir.c[583,596] [2025-03-08 02:46:03,337 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 02:46:03,355 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 02:46:03,364 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/filter_iir.c[583,596] [2025-03-08 02:46:03,382 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 02:46:03,402 INFO L204 MainTranslator]: Completed translation [2025-03-08 02:46:03,402 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:46:03 WrapperNode [2025-03-08 02:46:03,403 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 02:46:03,404 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 02:46:03,404 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 02:46:03,404 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 02:46:03,408 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:46:03" (1/1) ... [2025-03-08 02:46:03,415 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:46:03" (1/1) ... [2025-03-08 02:46:03,436 INFO L138 Inliner]: procedures = 19, calls = 70, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 138 [2025-03-08 02:46:03,437 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 02:46:03,437 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 02:46:03,437 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 02:46:03,437 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 02:46:03,445 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:46:03" (1/1) ... [2025-03-08 02:46:03,445 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:46:03" (1/1) ... [2025-03-08 02:46:03,448 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:46:03" (1/1) ... [2025-03-08 02:46:03,465 INFO L175 MemorySlicer]: Split 54 memory accesses to 9 slices as follows [2, 6, 4, 6, 4, 11, 11, 5, 5]. 20 percent of accesses are in the largest equivalence class. The 18 initializations are split as follows [2, 3, 2, 3, 2, 2, 2, 1, 1]. The 11 writes are split as follows [0, 0, 0, 0, 0, 4, 4, 2, 1]. [2025-03-08 02:46:03,466 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:46:03" (1/1) ... [2025-03-08 02:46:03,466 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:46:03" (1/1) ... [2025-03-08 02:46:03,477 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:46:03" (1/1) ... [2025-03-08 02:46:03,477 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:46:03" (1/1) ... [2025-03-08 02:46:03,479 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:46:03" (1/1) ... [2025-03-08 02:46:03,480 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:46:03" (1/1) ... [2025-03-08 02:46:03,482 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 02:46:03,483 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 02:46:03,483 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 02:46:03,484 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 02:46:03,484 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:46:03" (1/1) ... [2025-03-08 02:46:03,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 02:46:03,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 02:46:03,509 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 02:46:03,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-08 02:46:03,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 02:46:03,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#0 [2025-03-08 02:46:03,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#1 [2025-03-08 02:46:03,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#2 [2025-03-08 02:46:03,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#3 [2025-03-08 02:46:03,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#4 [2025-03-08 02:46:03,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#5 [2025-03-08 02:46:03,528 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#6 [2025-03-08 02:46:03,528 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#7 [2025-03-08 02:46:03,528 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#8 [2025-03-08 02:46:03,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#0 [2025-03-08 02:46:03,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#1 [2025-03-08 02:46:03,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#2 [2025-03-08 02:46:03,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#3 [2025-03-08 02:46:03,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#4 [2025-03-08 02:46:03,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#5 [2025-03-08 02:46:03,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#6 [2025-03-08 02:46:03,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#7 [2025-03-08 02:46:03,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#8 [2025-03-08 02:46:03,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-08 02:46:03,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-03-08 02:46:03,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2025-03-08 02:46:03,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2025-03-08 02:46:03,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2025-03-08 02:46:03,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#5 [2025-03-08 02:46:03,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#6 [2025-03-08 02:46:03,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#7 [2025-03-08 02:46:03,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#8 [2025-03-08 02:46:03,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#0 [2025-03-08 02:46:03,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#1 [2025-03-08 02:46:03,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#2 [2025-03-08 02:46:03,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#3 [2025-03-08 02:46:03,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#4 [2025-03-08 02:46:03,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#5 [2025-03-08 02:46:03,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#6 [2025-03-08 02:46:03,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#7 [2025-03-08 02:46:03,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#8 [2025-03-08 02:46:03,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 02:46:03,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 02:46:03,624 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 02:46:03,625 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 02:46:08,452 INFO L? ?]: Removed 25 outVars from TransFormulas that were not future-live. [2025-03-08 02:46:08,452 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 02:46:08,460 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 02:46:08,460 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 02:46:08,461 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 02:46:08 BoogieIcfgContainer [2025-03-08 02:46:08,461 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 02:46:08,463 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 02:46:08,463 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 02:46:08,467 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 02:46:08,467 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 02:46:03" (1/3) ... [2025-03-08 02:46:08,468 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51b0a6ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 02:46:08, skipping insertion in model container [2025-03-08 02:46:08,468 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:46:03" (2/3) ... [2025-03-08 02:46:08,468 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51b0a6ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 02:46:08, skipping insertion in model container [2025-03-08 02:46:08,468 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 02:46:08" (3/3) ... [2025-03-08 02:46:08,469 INFO L128 eAbstractionObserver]: Analyzing ICFG filter_iir.c [2025-03-08 02:46:08,479 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 02:46:08,480 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG filter_iir.c that has 1 procedures, 17 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 02:46:08,515 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 02:46:08,522 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@248c8dda, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 02:46:08,523 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 02:46:08,525 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.4) internal successors, (21), 16 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) [2025-03-08 02:46:08,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-03-08 02:46:08,528 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:46:08,528 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 02:46:08,529 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:46:08,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:46:08,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1518786887, now seen corresponding path program 1 times [2025-03-08 02:46:08,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-08 02:46:08,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [570506932] [2025-03-08 02:46:08,542 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:46:08,542 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2025-03-08 02:46:08,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2025-03-08 02:46:08,545 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2025-03-08 02:46:08,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2025-03-08 02:46:08,663 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-08 02:46:10,938 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-08 02:46:10,939 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:46:10,939 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:46:11,047 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-08 02:46:11,050 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 02:46:11,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 02:46:11,060 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 02:46:11,061 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-08 02:46:11,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [570506932] [2025-03-08 02:46:11,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [570506932] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:46:11,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 02:46:11,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 02:46:11,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634738216] [2025-03-08 02:46:11,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:46:11,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 02:46:11,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-08 02:46:11,076 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 02:46:11,077 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 02:46:11,078 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.4) internal successors, (21), 16 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 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2025-03-08 02:46:11,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:46:11,085 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2025-03-08 02:46:11,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 02:46:11,086 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) Word has length 12 [2025-03-08 02:46:11,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:46:11,090 INFO L225 Difference]: With dead ends: 29 [2025-03-08 02:46:11,090 INFO L226 Difference]: Without dead ends: 14 [2025-03-08 02:46:11,092 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 02:46:11,093 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 02:46:11,094 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 02:46:11,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2025-03-08 02:46:11,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2025-03-08 02:46:11,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 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) [2025-03-08 02:46:11,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2025-03-08 02:46:11,112 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 12 [2025-03-08 02:46:11,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:46:11,112 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2025-03-08 02:46:11,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2025-03-08 02:46:11,113 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2025-03-08 02:46:11,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-03-08 02:46:11,113 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:46:11,113 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 02:46:11,177 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2025-03-08 02:46:11,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2025-03-08 02:46:11,314 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:46:11,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:46:11,315 INFO L85 PathProgramCache]: Analyzing trace with hash -631283206, now seen corresponding path program 1 times [2025-03-08 02:46:11,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-08 02:46:11,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1251969130] [2025-03-08 02:46:11,315 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:46:11,315 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2025-03-08 02:46:11,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2025-03-08 02:46:11,318 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2025-03-08 02:46:11,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2025-03-08 02:46:11,412 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-08 02:46:31,813 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-08 02:46:31,813 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:46:31,813 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:46:31,979 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 80 conjuncts are in the unsatisfiable core [2025-03-08 02:46:31,988 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 02:46:37,209 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-08 02:46:37,231 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-08 02:46:37,247 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-08 02:46:37,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2025-03-08 02:46:38,732 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-08 02:46:38,747 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-08 02:46:38,761 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-08 02:46:38,764 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2025-03-08 02:47:10,923 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 02:47:10,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 929 treesize of output 841 [2025-03-08 02:47:12,502 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 02:47:12,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 875 treesize of output 721 [2025-03-08 02:47:13,550 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 02:47:13,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 812 treesize of output 740 [2025-03-08 02:47:14,640 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 02:47:14,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 753 treesize of output 657 [2025-03-08 02:47:15,597 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 02:47:15,598 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 689 treesize of output 601 [2025-03-08 02:47:16,456 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 02:47:16,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 635 treesize of output 481 [2025-03-08 02:47:16,839 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 02:47:16,839 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 547 treesize of output 411 [2025-03-08 02:47:29,069 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_20|) ((_ extract 31 0) |v_skolemized_q#valueAsBitvector_20|)) [2025-03-08 02:47:33,080 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_20|) ((_ extract 31 0) |v_skolemized_q#valueAsBitvector_20|)) [2025-03-08 02:47:33,080 INFO L224 Elim1Store]: Index analysis took 8016 ms [2025-03-08 02:47:33,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2025-03-08 02:47:41,327 WARN L286 SmtUtils]: Spent 8.21s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)