./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 8fc3dc66 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-?-8fc3dc6-m [2025-03-16 15:54:05,392 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 15:54:05,450 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 15:54:05,458 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 15:54:05,458 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 15:54:05,478 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 15:54:05,479 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 15:54:05,480 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 15:54:05,480 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 15:54:05,480 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 15:54:05,481 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 15:54:05,481 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 15:54:05,481 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 15:54:05,481 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 15:54:05,481 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 15:54:05,482 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 15:54:05,482 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 15:54:05,482 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 15:54:05,482 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 15:54:05,482 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 15:54:05,482 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 15:54:05,482 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 15:54:05,482 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 15:54:05,482 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 15:54:05,482 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 15:54:05,482 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 15:54:05,483 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 15:54:05,483 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 15:54:05,483 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 15:54:05,483 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 15:54:05,483 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 15:54:05,483 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 15:54:05,483 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 15:54:05,483 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 15:54:05,484 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 15:54:05,484 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 15:54:05,484 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 15:54:05,484 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 15:54:05,484 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 15:54:05,484 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 15:54:05,484 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 15:54:05,484 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 15:54:05,484 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 15:54:05,484 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 [2025-03-16 15:54:05,721 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 15:54:05,730 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 15:54:05,732 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 15:54:05,733 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 15:54:05,733 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 15:54:05,734 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/filter_iir.c [2025-03-16 15:54:06,894 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3a41e84d/e1f57c7961e24e548407cdf7d72d2707/FLAGacbfb665e [2025-03-16 15:54:07,111 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 15:54:07,112 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/filter_iir.c [2025-03-16 15:54:07,119 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3a41e84d/e1f57c7961e24e548407cdf7d72d2707/FLAGacbfb665e [2025-03-16 15:54:07,130 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3a41e84d/e1f57c7961e24e548407cdf7d72d2707 [2025-03-16 15:54:07,132 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 15:54:07,133 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 15:54:07,133 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 15:54:07,133 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 15:54:07,136 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 15:54:07,137 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 03:54:07" (1/1) ... [2025-03-16 15:54:07,137 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@579f74ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:54:07, skipping insertion in model container [2025-03-16 15:54:07,137 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 03:54:07" (1/1) ... [2025-03-16 15:54:07,146 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 15:54:07,230 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] [2025-03-16 15:54:07,251 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 15:54:07,261 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 15:54:07,267 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] [2025-03-16 15:54:07,277 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 15:54:07,301 INFO L204 MainTranslator]: Completed translation [2025-03-16 15:54:07,302 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:54:07 WrapperNode [2025-03-16 15:54:07,302 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 15:54:07,303 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 15:54:07,303 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 15:54:07,303 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 15:54:07,307 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:54:07" (1/1) ... [2025-03-16 15:54:07,311 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:54:07" (1/1) ... [2025-03-16 15:54:07,327 INFO L138 Inliner]: procedures = 18, calls = 70, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 137 [2025-03-16 15:54:07,328 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 15:54:07,328 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 15:54:07,329 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 15:54:07,329 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 15:54:07,339 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:54:07" (1/1) ... [2025-03-16 15:54:07,339 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:54:07" (1/1) ... [2025-03-16 15:54:07,341 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:54:07" (1/1) ... [2025-03-16 15:54:07,359 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]. [2025-03-16 15:54:07,360 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:54:07" (1/1) ... [2025-03-16 15:54:07,360 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:54:07" (1/1) ... [2025-03-16 15:54:07,374 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:54:07" (1/1) ... [2025-03-16 15:54:07,375 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:54:07" (1/1) ... [2025-03-16 15:54:07,378 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:54:07" (1/1) ... [2025-03-16 15:54:07,379 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:54:07" (1/1) ... [2025-03-16 15:54:07,381 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 15:54:07,381 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 15:54:07,381 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 15:54:07,381 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 15:54:07,386 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:54:07" (1/1) ... [2025-03-16 15:54:07,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 15:54:07,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 15:54:07,416 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) [2025-03-16 15:54:07,419 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 [2025-03-16 15:54:07,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 15:54:07,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 15:54:07,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-16 15:54:07,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-16 15:54:07,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-16 15:54:07,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-16 15:54:07,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-16 15:54:07,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-16 15:54:07,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-03-16 15:54:07,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-03-16 15:54:07,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2025-03-16 15:54:07,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2025-03-16 15:54:07,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2025-03-16 15:54:07,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2025-03-16 15:54:07,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2025-03-16 15:54:07,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2025-03-16 15:54:07,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2025-03-16 15:54:07,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2025-03-16 15:54:07,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2025-03-16 15:54:07,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2025-03-16 15:54:07,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2025-03-16 15:54:07,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2025-03-16 15:54:07,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2025-03-16 15:54:07,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2025-03-16 15:54:07,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#5 [2025-03-16 15:54:07,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#6 [2025-03-16 15:54:07,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#7 [2025-03-16 15:54:07,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#8 [2025-03-16 15:54:07,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 15:54:07,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 15:54:07,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2025-03-16 15:54:07,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2025-03-16 15:54:07,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2025-03-16 15:54:07,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2025-03-16 15:54:07,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2025-03-16 15:54:07,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#5 [2025-03-16 15:54:07,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#6 [2025-03-16 15:54:07,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#7 [2025-03-16 15:54:07,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#8 [2025-03-16 15:54:07,524 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 15:54:07,526 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 15:54:07,667 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2025-03-16 15:54:07,667 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 15:54:07,677 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 15:54:07,677 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 15:54:07,677 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 03:54:07 BoogieIcfgContainer [2025-03-16 15:54:07,678 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 15:54:07,680 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 15:54:07,680 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 15:54:07,683 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 15:54:07,683 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 03:54:07" (1/3) ... [2025-03-16 15:54:07,684 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53667df5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 03:54:07, skipping insertion in model container [2025-03-16 15:54:07,684 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:54:07" (2/3) ... [2025-03-16 15:54:07,684 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53667df5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 03:54:07, skipping insertion in model container [2025-03-16 15:54:07,684 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 03:54:07" (3/3) ... [2025-03-16 15:54:07,685 INFO L128 eAbstractionObserver]: Analyzing ICFG filter_iir.c [2025-03-16 15:54:07,695 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 15:54:07,697 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG filter_iir.c that has 1 procedures, 14 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-16 15:54:07,738 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 15:54:07,747 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;@503abb16, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 15:54:07,747 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 15:54:07,749 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 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) [2025-03-16 15:54:07,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-03-16 15:54:07,752 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:54:07,753 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:54:07,753 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:54:07,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:54:07,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1548411772, now seen corresponding path program 1 times [2025-03-16 15:54:07,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:54:07,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662451698] [2025-03-16 15:54:07,763 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:54:07,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:54:07,836 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-16 15:54:07,866 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-16 15:54:07,867 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:54:07,867 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:54:07,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:54:07,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:54:07,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662451698] [2025-03-16 15:54:07,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662451698] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:54:07,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:54:07,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-16 15:54:07,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718636501] [2025-03-16 15:54:07,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:54:07,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-16 15:54:07,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:54:07,946 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-16 15:54:07,947 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-16 15:54:07,948 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 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 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2025-03-16 15:54:07,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:54:07,955 INFO L93 Difference]: Finished difference Result 25 states and 34 transitions. [2025-03-16 15:54:07,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-16 15:54:07,956 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2025-03-16 15:54:07,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:54:07,959 INFO L225 Difference]: With dead ends: 25 [2025-03-16 15:54:07,960 INFO L226 Difference]: Without dead ends: 12 [2025-03-16 15:54:07,961 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 [2025-03-16 15:54:07,963 INFO L435 NwaCegarLoop]: 14 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, 14 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 [2025-03-16 15:54:07,963 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 15:54:07,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2025-03-16 15:54:07,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2025-03-16 15:54:07,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:54:07,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2025-03-16 15:54:07,979 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 10 [2025-03-16 15:54:07,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:54:07,980 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2025-03-16 15:54:07,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2025-03-16 15:54:07,980 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2025-03-16 15:54:07,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-03-16 15:54:07,980 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:54:07,980 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:54:07,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 15:54:07,980 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:54:07,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:54:07,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1577040923, now seen corresponding path program 1 times [2025-03-16 15:54:07,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:54:07,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243082088] [2025-03-16 15:54:07,981 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:54:07,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:54:08,004 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-16 15:54:08,060 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-16 15:54:08,061 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:54:08,061 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-16 15:54:08,061 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-16 15:54:08,072 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-16 15:54:08,094 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-16 15:54:08,094 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:54:08,094 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-16 15:54:08,115 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-16 15:54:08,116 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-16 15:54:08,117 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-03-16 15:54:08,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 15:54:08,120 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-16 15:54:08,141 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-16 15:54:08,143 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.03 03:54:08 BoogieIcfgContainer [2025-03-16 15:54:08,143 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-16 15:54:08,143 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-16 15:54:08,143 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-16 15:54:08,144 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-16 15:54:08,145 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 03:54:07" (3/4) ... [2025-03-16 15:54:08,146 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-03-16 15:54:08,147 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-16 15:54:08,147 INFO L158 Benchmark]: Toolchain (without parser) took 1014.70ms. Allocated memory is still 167.8MB. Free memory was 124.7MB in the beginning and 55.2MB in the end (delta: 69.5MB). Peak memory consumption was 67.1MB. Max. memory is 16.1GB. [2025-03-16 15:54:08,148 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 201.3MB. Free memory is still 117.4MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-16 15:54:08,148 INFO L158 Benchmark]: CACSL2BoogieTranslator took 168.79ms. Allocated memory is still 167.8MB. Free memory was 124.0MB in the beginning and 112.3MB in the end (delta: 11.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-16 15:54:08,148 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.35ms. Allocated memory is still 167.8MB. Free memory was 112.3MB in the beginning and 110.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-16 15:54:08,148 INFO L158 Benchmark]: Boogie Preprocessor took 52.25ms. Allocated memory is still 167.8MB. Free memory was 110.8MB in the beginning and 108.5MB in the end (delta: 2.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-16 15:54:08,148 INFO L158 Benchmark]: IcfgBuilder took 296.87ms. Allocated memory is still 167.8MB. Free memory was 108.5MB in the beginning and 93.2MB in the end (delta: 15.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-16 15:54:08,149 INFO L158 Benchmark]: TraceAbstraction took 463.16ms. Allocated memory is still 167.8MB. Free memory was 92.4MB in the beginning and 55.9MB in the end (delta: 36.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-03-16 15:54:08,149 INFO L158 Benchmark]: Witness Printer took 3.54ms. Allocated memory is still 167.8MB. Free memory is still 55.2MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-16 15:54:08,150 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 117.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 168.79ms. Allocated memory is still 167.8MB. Free memory was 124.0MB in the beginning and 112.3MB in the end (delta: 11.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.35ms. Allocated memory is still 167.8MB. Free memory was 112.3MB in the beginning and 110.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 52.25ms. Allocated memory is still 167.8MB. Free memory was 110.8MB in the beginning and 108.5MB in the end (delta: 2.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 296.87ms. Allocated memory is still 167.8MB. Free memory was 108.5MB in the beginning and 93.2MB in the end (delta: 15.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 463.16ms. Allocated memory is still 167.8MB. Free memory was 92.4MB in the beginning and 55.9MB in the end (delta: 36.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Witness Printer took 3.54ms. Allocated memory is still 167.8MB. Free memory is still 55.2MB. 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; [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 [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, 14 locations, 18 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, 14 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, 14 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=14occurred 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, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 9 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 [2025-03-16 15:54:08,162 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-?-8fc3dc6-m [2025-03-16 15:54:09,950 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 15:54:10,028 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2025-03-16 15:54:10,032 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 15:54:10,032 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 15:54:10,054 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 15:54:10,054 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 15:54:10,054 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 15:54:10,055 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 15:54:10,055 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 15:54:10,056 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 15:54:10,056 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 15:54:10,056 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 15:54:10,056 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 15:54:10,056 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 15:54:10,056 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 15:54:10,057 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 15:54:10,057 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 15:54:10,057 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 15:54:10,057 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 15:54:10,057 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 15:54:10,057 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 15:54:10,057 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 15:54:10,057 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-16 15:54:10,057 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-16 15:54:10,058 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-16 15:54:10,058 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 15:54:10,058 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 15:54:10,058 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 15:54:10,058 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 15:54:10,058 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 15:54:10,058 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 15:54:10,058 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 15:54:10,058 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 15:54:10,059 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 15:54:10,059 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 15:54:10,059 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 15:54:10,059 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 15:54:10,059 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 15:54:10,059 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-16 15:54:10,059 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-16 15:54:10,059 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 15:54:10,059 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 15:54:10,059 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 15:54:10,059 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 15:54:10,060 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 [2025-03-16 15:54:10,288 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 15:54:10,293 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 15:54:10,295 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 15:54:10,296 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 15:54:10,296 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 15:54:10,297 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/filter_iir.c [2025-03-16 15:54:11,453 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4181d4a9/1a41fe21130d4e2883da065e40a6b1bf/FLAG18beec3e8 [2025-03-16 15:54:11,631 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 15:54:11,634 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/filter_iir.c [2025-03-16 15:54:11,640 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4181d4a9/1a41fe21130d4e2883da065e40a6b1bf/FLAG18beec3e8 [2025-03-16 15:54:12,009 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4181d4a9/1a41fe21130d4e2883da065e40a6b1bf [2025-03-16 15:54:12,011 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 15:54:12,013 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 15:54:12,014 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 15:54:12,014 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 15:54:12,017 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 15:54:12,017 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 03:54:12" (1/1) ... [2025-03-16 15:54:12,018 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33543aa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:54:12, skipping insertion in model container [2025-03-16 15:54:12,018 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 03:54:12" (1/1) ... [2025-03-16 15:54:12,028 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 15:54:12,116 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] [2025-03-16 15:54:12,138 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 15:54:12,153 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 15:54:12,160 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] [2025-03-16 15:54:12,169 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 15:54:12,183 INFO L204 MainTranslator]: Completed translation [2025-03-16 15:54:12,183 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:54:12 WrapperNode [2025-03-16 15:54:12,183 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 15:54:12,184 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 15:54:12,184 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 15:54:12,184 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 15:54:12,189 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:54:12" (1/1) ... [2025-03-16 15:54:12,202 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:54:12" (1/1) ... [2025-03-16 15:54:12,222 INFO L138 Inliner]: procedures = 19, calls = 70, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 138 [2025-03-16 15:54:12,227 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 15:54:12,227 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 15:54:12,227 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 15:54:12,227 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 15:54:12,233 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:54:12" (1/1) ... [2025-03-16 15:54:12,235 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:54:12" (1/1) ... [2025-03-16 15:54:12,239 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:54:12" (1/1) ... [2025-03-16 15:54:12,254 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]. [2025-03-16 15:54:12,254 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:54:12" (1/1) ... [2025-03-16 15:54:12,254 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:54:12" (1/1) ... [2025-03-16 15:54:12,263 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:54:12" (1/1) ... [2025-03-16 15:54:12,265 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:54:12" (1/1) ... [2025-03-16 15:54:12,266 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:54:12" (1/1) ... [2025-03-16 15:54:12,272 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:54:12" (1/1) ... [2025-03-16 15:54:12,274 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 15:54:12,275 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 15:54:12,275 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 15:54:12,275 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 15:54:12,276 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:54:12" (1/1) ... [2025-03-16 15:54:12,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 15:54:12,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 15:54:12,304 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) [2025-03-16 15:54:12,307 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 [2025-03-16 15:54:12,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 15:54:12,326 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#0 [2025-03-16 15:54:12,326 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#1 [2025-03-16 15:54:12,326 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#2 [2025-03-16 15:54:12,326 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#3 [2025-03-16 15:54:12,326 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#4 [2025-03-16 15:54:12,326 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#5 [2025-03-16 15:54:12,326 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#6 [2025-03-16 15:54:12,326 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#7 [2025-03-16 15:54:12,326 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#8 [2025-03-16 15:54:12,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#0 [2025-03-16 15:54:12,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#1 [2025-03-16 15:54:12,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#2 [2025-03-16 15:54:12,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#3 [2025-03-16 15:54:12,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#4 [2025-03-16 15:54:12,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#5 [2025-03-16 15:54:12,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#6 [2025-03-16 15:54:12,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#7 [2025-03-16 15:54:12,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#8 [2025-03-16 15:54:12,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-16 15:54:12,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-03-16 15:54:12,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2025-03-16 15:54:12,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2025-03-16 15:54:12,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2025-03-16 15:54:12,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#5 [2025-03-16 15:54:12,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#6 [2025-03-16 15:54:12,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#7 [2025-03-16 15:54:12,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#8 [2025-03-16 15:54:12,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#0 [2025-03-16 15:54:12,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#1 [2025-03-16 15:54:12,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#2 [2025-03-16 15:54:12,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#3 [2025-03-16 15:54:12,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#4 [2025-03-16 15:54:12,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#5 [2025-03-16 15:54:12,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#6 [2025-03-16 15:54:12,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#7 [2025-03-16 15:54:12,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#8 [2025-03-16 15:54:12,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 15:54:12,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 15:54:12,445 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 15:54:12,447 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 15:54:17,301 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2025-03-16 15:54:17,301 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 15:54:17,310 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 15:54:17,310 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 15:54:17,310 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 03:54:17 BoogieIcfgContainer [2025-03-16 15:54:17,310 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 15:54:17,312 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 15:54:17,312 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 15:54:17,315 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 15:54:17,315 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 03:54:12" (1/3) ... [2025-03-16 15:54:17,315 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5523259e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 03:54:17, skipping insertion in model container [2025-03-16 15:54:17,315 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:54:12" (2/3) ... [2025-03-16 15:54:17,315 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5523259e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 03:54:17, skipping insertion in model container [2025-03-16 15:54:17,315 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 03:54:17" (3/3) ... [2025-03-16 15:54:17,316 INFO L128 eAbstractionObserver]: Analyzing ICFG filter_iir.c [2025-03-16 15:54:17,325 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 15:54:17,326 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG filter_iir.c that has 1 procedures, 14 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-16 15:54:17,355 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 15:54:17,362 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;@2508d183, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 15:54:17,362 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 15:54:17,365 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 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) [2025-03-16 15:54:17,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-03-16 15:54:17,368 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:54:17,368 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:54:17,368 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:54:17,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:54:17,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1548411772, now seen corresponding path program 1 times [2025-03-16 15:54:17,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-16 15:54:17,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1848377316] [2025-03-16 15:54:17,381 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:54:17,383 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 [2025-03-16 15:54:17,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2025-03-16 15:54:17,387 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) [2025-03-16 15:54:17,388 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 [2025-03-16 15:54:17,496 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-16 15:54:19,733 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-16 15:54:19,734 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:54:19,734 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:54:19,846 INFO L256 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-16 15:54:19,849 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 15:54:19,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:54:19,859 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 15:54:19,859 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-16 15:54:19,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1848377316] [2025-03-16 15:54:19,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1848377316] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:54:19,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:54:19,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-16 15:54:19,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11913833] [2025-03-16 15:54:19,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:54:19,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-16 15:54:19,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-16 15:54:19,876 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-16 15:54:19,877 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-16 15:54:19,878 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 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 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2025-03-16 15:54:19,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:54:19,884 INFO L93 Difference]: Finished difference Result 25 states and 34 transitions. [2025-03-16 15:54:19,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-16 15:54:19,885 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2025-03-16 15:54:19,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:54:19,889 INFO L225 Difference]: With dead ends: 25 [2025-03-16 15:54:19,889 INFO L226 Difference]: Without dead ends: 12 [2025-03-16 15:54:19,890 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-16 15:54:19,892 INFO L435 NwaCegarLoop]: 14 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, 14 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 [2025-03-16 15:54:19,892 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 15:54:19,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2025-03-16 15:54:19,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2025-03-16 15:54:19,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:54:19,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2025-03-16 15:54:19,908 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 10 [2025-03-16 15:54:19,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:54:19,908 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2025-03-16 15:54:19,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2025-03-16 15:54:19,908 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2025-03-16 15:54:19,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-03-16 15:54:19,908 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:54:19,908 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:54:19,974 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 [2025-03-16 15:54:20,109 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 [2025-03-16 15:54:20,109 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:54:20,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:54:20,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1577040923, now seen corresponding path program 1 times [2025-03-16 15:54:20,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-16 15:54:20,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1959112521] [2025-03-16 15:54:20,110 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:54:20,110 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 [2025-03-16 15:54:20,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2025-03-16 15:54:20,112 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) [2025-03-16 15:54:20,114 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 [2025-03-16 15:54:20,208 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-16 15:54:51,055 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-16 15:54:51,055 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:54:51,055 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:54:51,210 INFO L256 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 68 conjuncts are in the unsatisfiable core [2025-03-16 15:54:51,224 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 15:54:51,402 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-16 15:54:51,420 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-16 15:54:51,434 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-16 15:54:51,440 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 [2025-03-16 15:54:53,103 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-16 15:54:53,118 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-16 15:54:53,132 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-16 15:54:53,136 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 [2025-03-16 15:55:23,458 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-16 15:55:23,459 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 1896 treesize of output 1676 [2025-03-16 15:55:25,485 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-16 15:55:25,486 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 1734 treesize of output 1382 [2025-03-16 15:55:27,014 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-16 15:55:27,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1521 treesize of output 1371 [2025-03-16 15:55:30,036 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-16 15:55:30,036 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 1284 treesize of output 1046 [2025-03-16 15:55:33,608 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-16 15:55:33,609 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 1088 treesize of output 938 [2025-03-16 15:55:36,945 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-16 15:55:36,945 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 982 treesize of output 762 [2025-03-16 15:55:45,959 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-16 15:55:45,960 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 544 treesize of output 408