./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 798a7b37 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-?-798a7b3-m [2025-03-03 11:35:44,876 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 11:35:44,929 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 11:35:44,932 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 11:35:44,935 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 11:35:44,952 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 11:35:44,953 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 11:35:44,953 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 11:35:44,954 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 11:35:44,954 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 11:35:44,954 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 11:35:44,955 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 11:35:44,955 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 11:35:44,955 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 11:35:44,955 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 11:35:44,956 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 11:35:44,956 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 11:35:44,956 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 11:35:44,956 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 11:35:44,956 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 11:35:44,956 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 11:35:44,956 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 11:35:44,956 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 11:35:44,956 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 11:35:44,956 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 11:35:44,956 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 11:35:44,956 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 11:35:44,957 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 11:35:44,957 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 11:35:44,957 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 11:35:44,957 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 11:35:44,957 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 11:35:44,957 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 11:35:44,957 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 11:35:44,957 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 11:35:44,958 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 11:35:44,958 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 11:35:44,958 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 11:35:44,958 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 11:35:44,958 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 11:35:44,958 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 11:35:44,958 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 11:35:44,958 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 11:35:44,958 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 [2025-03-03 11:35:45,158 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 11:35:45,165 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 11:35:45,167 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 11:35:45,168 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 11:35:45,168 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 11:35:45,169 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/filter_iir.c [2025-03-03 11:35:46,322 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98702f72b/bb1dfaed6c194011902cb334c3187cd3/FLAG42dacd6b1 [2025-03-03 11:35:46,562 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 11:35:46,563 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/filter_iir.c [2025-03-03 11:35:46,569 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98702f72b/bb1dfaed6c194011902cb334c3187cd3/FLAG42dacd6b1 [2025-03-03 11:35:46,896 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98702f72b/bb1dfaed6c194011902cb334c3187cd3 [2025-03-03 11:35:46,898 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 11:35:46,899 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 11:35:46,900 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 11:35:46,900 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 11:35:46,902 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 11:35:46,903 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 11:35:46" (1/1) ... [2025-03-03 11:35:46,903 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cf098e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:35:46, skipping insertion in model container [2025-03-03 11:35:46,903 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 11:35:46" (1/1) ... [2025-03-03 11:35:46,912 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 11:35:47,014 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] [2025-03-03 11:35:47,036 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 11:35:47,046 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 11:35:47,056 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] [2025-03-03 11:35:47,065 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 11:35:47,077 INFO L204 MainTranslator]: Completed translation [2025-03-03 11:35:47,077 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:35:47 WrapperNode [2025-03-03 11:35:47,077 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 11:35:47,078 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 11:35:47,078 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 11:35:47,078 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 11:35:47,082 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:35:47" (1/1) ... [2025-03-03 11:35:47,087 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:35:47" (1/1) ... [2025-03-03 11:35:47,102 INFO L138 Inliner]: procedures = 18, calls = 70, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 137 [2025-03-03 11:35:47,102 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 11:35:47,103 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 11:35:47,103 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 11:35:47,103 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 11:35:47,108 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:35:47" (1/1) ... [2025-03-03 11:35:47,108 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:35:47" (1/1) ... [2025-03-03 11:35:47,110 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:35:47" (1/1) ... [2025-03-03 11:35:47,122 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]. [2025-03-03 11:35:47,122 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:35:47" (1/1) ... [2025-03-03 11:35:47,122 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:35:47" (1/1) ... [2025-03-03 11:35:47,128 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:35:47" (1/1) ... [2025-03-03 11:35:47,130 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:35:47" (1/1) ... [2025-03-03 11:35:47,132 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:35:47" (1/1) ... [2025-03-03 11:35:47,134 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:35:47" (1/1) ... [2025-03-03 11:35:47,138 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 11:35:47,138 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 11:35:47,138 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 11:35:47,139 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 11:35:47,141 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:35:47" (1/1) ... [2025-03-03 11:35:47,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 11:35:47,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 11:35:47,165 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) [2025-03-03 11:35:47,167 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 [2025-03-03 11:35:47,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 11:35:47,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 11:35:47,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-03 11:35:47,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-03 11:35:47,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-03 11:35:47,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-03 11:35:47,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-03 11:35:47,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-03 11:35:47,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-03-03 11:35:47,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-03-03 11:35:47,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2025-03-03 11:35:47,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2025-03-03 11:35:47,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2025-03-03 11:35:47,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2025-03-03 11:35:47,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2025-03-03 11:35:47,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2025-03-03 11:35:47,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2025-03-03 11:35:47,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2025-03-03 11:35:47,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2025-03-03 11:35:47,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2025-03-03 11:35:47,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2025-03-03 11:35:47,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2025-03-03 11:35:47,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2025-03-03 11:35:47,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2025-03-03 11:35:47,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#5 [2025-03-03 11:35:47,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#6 [2025-03-03 11:35:47,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#7 [2025-03-03 11:35:47,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#8 [2025-03-03 11:35:47,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 11:35:47,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 11:35:47,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2025-03-03 11:35:47,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2025-03-03 11:35:47,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2025-03-03 11:35:47,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2025-03-03 11:35:47,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2025-03-03 11:35:47,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#5 [2025-03-03 11:35:47,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#6 [2025-03-03 11:35:47,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#7 [2025-03-03 11:35:47,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#8 [2025-03-03 11:35:47,267 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 11:35:47,269 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 11:35:47,400 INFO L? ?]: Removed 23 outVars from TransFormulas that were not future-live. [2025-03-03 11:35:47,400 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 11:35:47,406 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 11:35:47,406 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 11:35:47,407 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 11:35:47 BoogieIcfgContainer [2025-03-03 11:35:47,407 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 11:35:47,408 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 11:35:47,408 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 11:35:47,412 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 11:35:47,412 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 11:35:46" (1/3) ... [2025-03-03 11:35:47,413 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13a90136 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 11:35:47, skipping insertion in model container [2025-03-03 11:35:47,413 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:35:47" (2/3) ... [2025-03-03 11:35:47,414 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13a90136 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 11:35:47, skipping insertion in model container [2025-03-03 11:35:47,414 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 11:35:47" (3/3) ... [2025-03-03 11:35:47,415 INFO L128 eAbstractionObserver]: Analyzing ICFG filter_iir.c [2025-03-03 11:35:47,426 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 11:35:47,428 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. [2025-03-03 11:35:47,474 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 11:35:47,483 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;@1f35a57c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 11:35:47,483 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 11:35:47,485 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) [2025-03-03 11:35:47,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-03-03 11:35:47,489 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 11:35:47,489 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 11:35:47,490 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 11:35:47,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 11:35:47,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1518786887, now seen corresponding path program 1 times [2025-03-03 11:35:47,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 11:35:47,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034793201] [2025-03-03 11:35:47,500 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 11:35:47,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 11:35:47,563 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-03 11:35:47,588 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-03 11:35:47,589 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 11:35:47,589 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 11:35:47,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 11:35:47,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 11:35:47,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034793201] [2025-03-03 11:35:47,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034793201] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 11:35:47,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 11:35:47,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-03 11:35:47,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277696751] [2025-03-03 11:35:47,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 11:35:47,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-03 11:35:47,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 11:35:47,669 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-03 11:35:47,669 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-03 11:35:47,670 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) [2025-03-03 11:35:47,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 11:35:47,677 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2025-03-03 11:35:47,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-03 11:35:47,678 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 [2025-03-03 11:35:47,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 11:35:47,682 INFO L225 Difference]: With dead ends: 29 [2025-03-03 11:35:47,682 INFO L226 Difference]: Without dead ends: 14 [2025-03-03 11:35:47,684 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 [2025-03-03 11:35:47,685 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 [2025-03-03 11:35:47,686 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] [2025-03-03 11:35:47,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2025-03-03 11:35:47,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2025-03-03 11:35:47,700 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) [2025-03-03 11:35:47,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2025-03-03 11:35:47,703 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 12 [2025-03-03 11:35:47,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 11:35:47,703 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2025-03-03 11:35:47,703 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) [2025-03-03 11:35:47,703 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2025-03-03 11:35:47,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-03-03 11:35:47,703 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 11:35:47,703 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 11:35:47,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-03 11:35:47,704 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 11:35:47,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 11:35:47,704 INFO L85 PathProgramCache]: Analyzing trace with hash -631283206, now seen corresponding path program 1 times [2025-03-03 11:35:47,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 11:35:47,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492786582] [2025-03-03 11:35:47,704 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 11:35:47,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 11:35:47,726 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-03 11:35:47,755 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-03 11:35:47,757 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 11:35:47,757 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-03 11:35:47,757 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-03 11:35:47,762 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-03 11:35:47,792 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-03 11:35:47,792 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 11:35:47,792 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-03 11:35:47,825 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-03 11:35:47,826 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-03 11:35:47,827 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-03-03 11:35:47,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-03 11:35:47,831 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-03 11:35:47,852 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-03 11:35:47,854 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.03 11:35:47 BoogieIcfgContainer [2025-03-03 11:35:47,854 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-03 11:35:47,855 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-03 11:35:47,855 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-03 11:35:47,855 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-03 11:35:47,859 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 11:35:47" (3/4) ... [2025-03-03 11:35:47,860 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-03-03 11:35:47,861 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-03 11:35:47,862 INFO L158 Benchmark]: Toolchain (without parser) took 962.74ms. Allocated memory is still 142.6MB. Free memory was 107.7MB in the beginning and 38.7MB in the end (delta: 69.1MB). Peak memory consumption was 67.1MB. Max. memory is 16.1GB. [2025-03-03 11:35:47,862 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 201.3MB. Free memory is still 122.9MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-03 11:35:47,862 INFO L158 Benchmark]: CACSL2BoogieTranslator took 177.96ms. Allocated memory is still 142.6MB. Free memory was 107.7MB in the beginning and 95.8MB in the end (delta: 11.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-03 11:35:47,862 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.62ms. Allocated memory is still 142.6MB. Free memory was 95.3MB in the beginning and 94.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-03 11:35:47,862 INFO L158 Benchmark]: Boogie Preprocessor took 35.05ms. Allocated memory is still 142.6MB. Free memory was 94.0MB in the beginning and 91.7MB in the end (delta: 2.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-03 11:35:47,862 INFO L158 Benchmark]: IcfgBuilder took 268.47ms. Allocated memory is still 142.6MB. Free memory was 91.7MB in the beginning and 76.8MB in the end (delta: 14.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-03 11:35:47,862 INFO L158 Benchmark]: TraceAbstraction took 445.80ms. Allocated memory is still 142.6MB. Free memory was 76.3MB in the beginning and 38.7MB in the end (delta: 37.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-03-03 11:35:47,863 INFO L158 Benchmark]: Witness Printer took 6.25ms. Allocated memory is still 142.6MB. Free memory is still 38.7MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-03 11:35:47,863 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 201.3MB. Free memory is still 122.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 177.96ms. Allocated memory is still 142.6MB. Free memory was 107.7MB in the beginning and 95.8MB in the end (delta: 11.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.62ms. Allocated memory is still 142.6MB. Free memory was 95.3MB in the beginning and 94.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 35.05ms. Allocated memory is still 142.6MB. Free memory was 94.0MB in the beginning and 91.7MB in the end (delta: 2.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 268.47ms. Allocated memory is still 142.6MB. Free memory was 91.7MB in the beginning and 76.8MB in the end (delta: 14.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 445.80ms. Allocated memory is still 142.6MB. Free memory was 76.3MB in the beginning and 38.7MB in the end (delta: 37.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Witness Printer took 6.25ms. Allocated memory is still 142.6MB. Free memory is still 38.7MB. 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 54, overapproximation of someBinaryDOUBLEComparisonOperation at line 50, overapproximation of someBinaryDOUBLEComparisonOperation at line 50, 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, 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 [2025-03-03 11:35:47,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally 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-?-798a7b3-m [2025-03-03 11:35:49,646 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 11:35:49,721 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2025-03-03 11:35:49,729 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 11:35:49,729 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 11:35:49,750 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 11:35:49,752 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 11:35:49,752 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 11:35:49,752 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 11:35:49,752 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 11:35:49,753 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 11:35:49,753 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 11:35:49,753 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 11:35:49,754 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 11:35:49,754 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 11:35:49,754 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 11:35:49,754 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 11:35:49,754 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 11:35:49,754 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 11:35:49,754 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 11:35:49,754 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 11:35:49,755 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 11:35:49,755 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 11:35:49,755 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-03 11:35:49,755 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-03 11:35:49,755 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-03 11:35:49,755 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 11:35:49,755 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 11:35:49,755 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 11:35:49,755 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 11:35:49,755 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 11:35:49,756 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 11:35:49,756 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 11:35:49,756 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 11:35:49,756 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 11:35:49,756 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 11:35:49,756 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 11:35:49,756 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 11:35:49,756 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 11:35:49,756 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-03 11:35:49,756 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-03 11:35:49,756 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 11:35:49,756 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 11:35:49,756 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 11:35:49,756 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 11:35:49,757 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 [2025-03-03 11:35:49,997 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 11:35:50,004 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 11:35:50,006 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 11:35:50,006 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 11:35:50,007 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 11:35:50,007 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/filter_iir.c [2025-03-03 11:35:51,146 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9887bdf0d/114853e409e445ed8cb963825f75f9cd/FLAGed1a33a28 [2025-03-03 11:35:51,325 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 11:35:51,328 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/filter_iir.c [2025-03-03 11:35:51,334 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9887bdf0d/114853e409e445ed8cb963825f75f9cd/FLAGed1a33a28 [2025-03-03 11:35:51,708 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9887bdf0d/114853e409e445ed8cb963825f75f9cd [2025-03-03 11:35:51,710 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 11:35:51,711 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 11:35:51,712 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 11:35:51,712 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 11:35:51,714 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 11:35:51,715 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 11:35:51" (1/1) ... [2025-03-03 11:35:51,715 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3be4e759 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:35:51, skipping insertion in model container [2025-03-03 11:35:51,716 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 11:35:51" (1/1) ... [2025-03-03 11:35:51,725 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 11:35:51,824 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] [2025-03-03 11:35:51,849 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 11:35:51,866 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 11:35:51,875 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] [2025-03-03 11:35:51,892 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 11:35:51,911 INFO L204 MainTranslator]: Completed translation [2025-03-03 11:35:51,912 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:35:51 WrapperNode [2025-03-03 11:35:51,913 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 11:35:51,913 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 11:35:51,913 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 11:35:51,914 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 11:35:51,918 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:35:51" (1/1) ... [2025-03-03 11:35:51,926 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:35:51" (1/1) ... [2025-03-03 11:35:51,945 INFO L138 Inliner]: procedures = 19, calls = 70, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 138 [2025-03-03 11:35:51,946 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 11:35:51,946 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 11:35:51,947 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 11:35:51,947 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 11:35:51,952 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:35:51" (1/1) ... [2025-03-03 11:35:51,952 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:35:51" (1/1) ... [2025-03-03 11:35:51,956 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:35:51" (1/1) ... [2025-03-03 11:35:51,973 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]. [2025-03-03 11:35:51,973 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:35:51" (1/1) ... [2025-03-03 11:35:51,974 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:35:51" (1/1) ... [2025-03-03 11:35:51,987 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:35:51" (1/1) ... [2025-03-03 11:35:51,988 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:35:51" (1/1) ... [2025-03-03 11:35:51,989 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:35:51" (1/1) ... [2025-03-03 11:35:51,990 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:35:51" (1/1) ... [2025-03-03 11:35:51,992 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 11:35:51,993 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 11:35:51,993 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 11:35:51,993 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 11:35:51,994 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:35:51" (1/1) ... [2025-03-03 11:35:51,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 11:35:52,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 11:35:52,020 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) [2025-03-03 11:35:52,026 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 [2025-03-03 11:35:52,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 11:35:52,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#0 [2025-03-03 11:35:52,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#1 [2025-03-03 11:35:52,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#2 [2025-03-03 11:35:52,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#3 [2025-03-03 11:35:52,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#4 [2025-03-03 11:35:52,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#5 [2025-03-03 11:35:52,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#6 [2025-03-03 11:35:52,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#7 [2025-03-03 11:35:52,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#8 [2025-03-03 11:35:52,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#0 [2025-03-03 11:35:52,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#1 [2025-03-03 11:35:52,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#2 [2025-03-03 11:35:52,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#3 [2025-03-03 11:35:52,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#4 [2025-03-03 11:35:52,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#5 [2025-03-03 11:35:52,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#6 [2025-03-03 11:35:52,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#7 [2025-03-03 11:35:52,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#8 [2025-03-03 11:35:52,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-03 11:35:52,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-03-03 11:35:52,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2025-03-03 11:35:52,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2025-03-03 11:35:52,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2025-03-03 11:35:52,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#5 [2025-03-03 11:35:52,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#6 [2025-03-03 11:35:52,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#7 [2025-03-03 11:35:52,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#8 [2025-03-03 11:35:52,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#0 [2025-03-03 11:35:52,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#1 [2025-03-03 11:35:52,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#2 [2025-03-03 11:35:52,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#3 [2025-03-03 11:35:52,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#4 [2025-03-03 11:35:52,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#5 [2025-03-03 11:35:52,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#6 [2025-03-03 11:35:52,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#7 [2025-03-03 11:35:52,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#8 [2025-03-03 11:35:52,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 11:35:52,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 11:35:52,151 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 11:35:52,153 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 11:35:57,007 INFO L? ?]: Removed 25 outVars from TransFormulas that were not future-live. [2025-03-03 11:35:57,007 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 11:35:57,012 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 11:35:57,013 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 11:35:57,013 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 11:35:57 BoogieIcfgContainer [2025-03-03 11:35:57,013 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 11:35:57,015 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 11:35:57,015 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 11:35:57,018 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 11:35:57,018 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 11:35:51" (1/3) ... [2025-03-03 11:35:57,018 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50c2b380 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 11:35:57, skipping insertion in model container [2025-03-03 11:35:57,018 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:35:51" (2/3) ... [2025-03-03 11:35:57,019 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50c2b380 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 11:35:57, skipping insertion in model container [2025-03-03 11:35:57,019 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 11:35:57" (3/3) ... [2025-03-03 11:35:57,020 INFO L128 eAbstractionObserver]: Analyzing ICFG filter_iir.c [2025-03-03 11:35:57,029 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 11:35:57,030 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. [2025-03-03 11:35:57,064 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 11:35:57,072 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;@4cf77b52, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 11:35:57,072 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 11:35:57,074 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) [2025-03-03 11:35:57,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-03-03 11:35:57,077 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 11:35:57,078 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 11:35:57,078 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 11:35:57,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 11:35:57,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1518786887, now seen corresponding path program 1 times [2025-03-03 11:35:57,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-03 11:35:57,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [779990078] [2025-03-03 11:35:57,089 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 11:35:57,089 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 [2025-03-03 11:35:57,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2025-03-03 11:35:57,091 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) [2025-03-03 11:35:57,093 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 [2025-03-03 11:35:57,188 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-03 11:35:59,350 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-03 11:35:59,351 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 11:35:59,351 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 11:35:59,458 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-03 11:35:59,460 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 11:35:59,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 11:35:59,478 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 11:35:59,479 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-03 11:35:59,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [779990078] [2025-03-03 11:35:59,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [779990078] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 11:35:59,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 11:35:59,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-03 11:35:59,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470867060] [2025-03-03 11:35:59,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 11:35:59,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-03 11:35:59,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-03 11:35:59,499 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-03 11:35:59,500 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-03 11:35:59,502 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) [2025-03-03 11:35:59,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 11:35:59,510 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2025-03-03 11:35:59,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-03 11:35:59,511 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 [2025-03-03 11:35:59,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 11:35:59,515 INFO L225 Difference]: With dead ends: 29 [2025-03-03 11:35:59,515 INFO L226 Difference]: Without dead ends: 14 [2025-03-03 11:35:59,517 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 [2025-03-03 11:35:59,518 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 [2025-03-03 11:35:59,520 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] [2025-03-03 11:35:59,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2025-03-03 11:35:59,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2025-03-03 11:35:59,535 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) [2025-03-03 11:35:59,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2025-03-03 11:35:59,538 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 12 [2025-03-03 11:35:59,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 11:35:59,538 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2025-03-03 11:35:59,538 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) [2025-03-03 11:35:59,538 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2025-03-03 11:35:59,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-03-03 11:35:59,538 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 11:35:59,538 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 11:35:59,602 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 [2025-03-03 11:35:59,739 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 [2025-03-03 11:35:59,739 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 11:35:59,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 11:35:59,740 INFO L85 PathProgramCache]: Analyzing trace with hash -631283206, now seen corresponding path program 1 times [2025-03-03 11:35:59,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-03 11:35:59,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1279496779] [2025-03-03 11:35:59,740 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 11:35:59,740 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 [2025-03-03 11:35:59,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2025-03-03 11:35:59,742 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) [2025-03-03 11:35:59,744 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 [2025-03-03 11:35:59,836 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-03 11:36:19,367 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-03 11:36:19,367 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 11:36:19,367 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 11:36:19,531 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 80 conjuncts are in the unsatisfiable core [2025-03-03 11:36:19,546 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 11:36:24,672 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-03 11:36:24,687 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-03 11:36:24,703 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-03 11:36:24,709 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 [2025-03-03 11:36:26,113 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-03 11:36:26,127 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-03 11:36:26,141 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-03 11:36:26,143 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 [2025-03-03 11:36:57,425 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-03 11:36:57,426 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 [2025-03-03 11:36:58,914 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-03 11:36:58,914 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 [2025-03-03 11:36:59,904 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-03 11:36:59,905 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 [2025-03-03 11:37:00,984 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-03 11:37:00,984 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 [2025-03-03 11:37:01,931 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-03 11:37:01,931 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 [2025-03-03 11:37:02,756 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-03 11:37:02,756 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 [2025-03-03 11:37:03,127 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-03 11:37:03,127 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 [2025-03-03 11:37:14,820 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|)) [2025-03-03 11:37:14,820 INFO L224 Elim1Store]: Index analysis took 4081 ms [2025-03-03 11:37:14,853 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 [2025-03-03 11:37:23,049 WARN L286 SmtUtils]: Spent 8.19s 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) [2025-03-03 11:37:29,222 WARN L286 SmtUtils]: Spent 6.17s 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)