./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/interpolation2.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/interpolation2.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 5f3bcf3c30f63fe0ad0702712c01ba8d1145d6fb2558cd3e5ee3c870476dc3b1 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 15:55:36,791 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 15:55:36,841 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 15:55:36,847 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 15:55:36,847 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 15:55:36,864 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 15:55:36,865 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 15:55:36,865 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 15:55:36,865 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 15:55:36,865 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 15:55:36,865 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 15:55:36,865 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 15:55:36,865 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 15:55:36,866 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 15:55:36,866 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 15:55:36,866 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 15:55:36,866 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 15:55:36,866 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 15:55:36,866 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 15:55:36,867 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 15:55:36,867 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 15:55:36,867 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 15:55:36,867 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 15:55:36,867 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 15:55:36,867 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 15:55:36,867 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 15:55:36,867 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 15:55:36,867 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 15:55:36,867 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 15:55:36,867 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 15:55:36,868 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 15:55:36,868 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 15:55:36,868 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 15:55:36,868 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 15:55:36,868 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 15:55:36,868 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 15:55:36,868 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 15:55:36,868 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 15:55:36,868 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 15:55:36,869 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 15:55:36,869 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 15:55:36,869 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 15:55:36,869 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 15:55:36,869 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 -> 5f3bcf3c30f63fe0ad0702712c01ba8d1145d6fb2558cd3e5ee3c870476dc3b1 [2025-03-16 15:55:37,093 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 15:55:37,099 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 15:55:37,101 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 15:55:37,102 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 15:55:37,102 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 15:55:37,103 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/interpolation2.c [2025-03-16 15:55:38,210 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db00b69cb/3e065009ba03477a9f96a55dcfc8a8cc/FLAG8153aa295 [2025-03-16 15:55:38,503 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 15:55:38,505 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/interpolation2.c [2025-03-16 15:55:38,512 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db00b69cb/3e065009ba03477a9f96a55dcfc8a8cc/FLAG8153aa295 [2025-03-16 15:55:38,526 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db00b69cb/3e065009ba03477a9f96a55dcfc8a8cc [2025-03-16 15:55:38,528 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 15:55:38,529 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 15:55:38,530 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 15:55:38,530 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 15:55:38,533 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 15:55:38,534 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 03:55:38" (1/1) ... [2025-03-16 15:55:38,535 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79600425 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:55:38, skipping insertion in model container [2025-03-16 15:55:38,536 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 03:55:38" (1/1) ... [2025-03-16 15:55:38,545 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 15:55:38,637 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/interpolation2.c[450,463] [2025-03-16 15:55:38,658 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 15:55:38,666 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 15:55:38,674 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/interpolation2.c[450,463] [2025-03-16 15:55:38,687 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 15:55:38,700 INFO L204 MainTranslator]: Completed translation [2025-03-16 15:55:38,701 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:55:38 WrapperNode [2025-03-16 15:55:38,701 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 15:55:38,702 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 15:55:38,702 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 15:55:38,702 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 15:55:38,706 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:55:38" (1/1) ... [2025-03-16 15:55:38,714 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:55:38" (1/1) ... [2025-03-16 15:55:38,729 INFO L138 Inliner]: procedures = 18, calls = 49, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 97 [2025-03-16 15:55:38,730 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 15:55:38,730 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 15:55:38,730 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 15:55:38,730 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 15:55:38,737 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:55:38" (1/1) ... [2025-03-16 15:55:38,738 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:55:38" (1/1) ... [2025-03-16 15:55:38,743 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:55:38" (1/1) ... [2025-03-16 15:55:38,755 INFO L175 MemorySlicer]: Split 30 memory accesses to 5 slices as follows [2, 8, 6, 8, 6]. 27 percent of accesses are in the largest equivalence class. The 22 initializations are split as follows [2, 5, 5, 5, 5]. The 0 writes are split as follows [0, 0, 0, 0, 0]. [2025-03-16 15:55:38,756 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:55:38" (1/1) ... [2025-03-16 15:55:38,757 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:55:38" (1/1) ... [2025-03-16 15:55:38,763 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:55:38" (1/1) ... [2025-03-16 15:55:38,767 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:55:38" (1/1) ... [2025-03-16 15:55:38,768 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:55:38" (1/1) ... [2025-03-16 15:55:38,772 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:55:38" (1/1) ... [2025-03-16 15:55:38,773 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 15:55:38,774 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 15:55:38,774 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 15:55:38,774 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 15:55:38,775 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:55:38" (1/1) ... [2025-03-16 15:55:38,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 15:55:38,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 15:55:38,802 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 15:55:38,805 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 15:55:38,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 15:55:38,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 15:55:38,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-16 15:55:38,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-16 15:55:38,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-16 15:55:38,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-16 15:55:38,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-16 15:55:38,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2025-03-16 15:55:38,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2025-03-16 15:55:38,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2025-03-16 15:55:38,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2025-03-16 15:55:38,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2025-03-16 15:55:38,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 15:55:38,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 15:55:38,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2025-03-16 15:55:38,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2025-03-16 15:55:38,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2025-03-16 15:55:38,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2025-03-16 15:55:38,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2025-03-16 15:55:38,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-16 15:55:38,880 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 15:55:38,882 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 15:55:39,004 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L15: call ULTIMATE.dealloc(main_~#min~0#1.base, main_~#min~0#1.offset);havoc main_~#min~0#1.base, main_~#min~0#1.offset;call ULTIMATE.dealloc(main_~#max~0#1.base, main_~#max~0#1.offset);havoc main_~#max~0#1.base, main_~#max~0#1.offset;call ULTIMATE.dealloc(main_~#org~0#1.base, main_~#org~0#1.offset);havoc main_~#org~0#1.base, main_~#org~0#1.offset;call ULTIMATE.dealloc(main_~#slope~0#1.base, main_~#slope~0#1.offset);havoc main_~#slope~0#1.base, main_~#slope~0#1.offset; [2025-03-16 15:55:39,015 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live. [2025-03-16 15:55:39,015 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 15:55:39,023 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 15:55:39,024 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 15:55:39,025 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 03:55:39 BoogieIcfgContainer [2025-03-16 15:55:39,026 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 15:55:39,028 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 15:55:39,028 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 15:55:39,031 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 15:55:39,031 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 03:55:38" (1/3) ... [2025-03-16 15:55:39,032 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63d894cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 03:55:39, skipping insertion in model container [2025-03-16 15:55:39,032 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:55:38" (2/3) ... [2025-03-16 15:55:39,032 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63d894cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 03:55:39, skipping insertion in model container [2025-03-16 15:55:39,032 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 03:55:39" (3/3) ... [2025-03-16 15:55:39,033 INFO L128 eAbstractionObserver]: Analyzing ICFG interpolation2.c [2025-03-16 15:55:39,045 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 15:55:39,046 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG interpolation2.c that has 1 procedures, 15 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-16 15:55:39,089 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 15:55:39,098 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;@37d0f99, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 15:55:39,098 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 15:55:39,103 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 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 15:55:39,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-16 15:55:39,107 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:55:39,107 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:55:39,107 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:55:39,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:55:39,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1477152309, now seen corresponding path program 1 times [2025-03-16 15:55:39,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:55:39,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812212983] [2025-03-16 15:55:39,119 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:55:39,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:55:39,182 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-16 15:55:39,205 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-16 15:55:39,207 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:55:39,207 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:55:39,254 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 15:55:39,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:55:39,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812212983] [2025-03-16 15:55:39,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812212983] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:55:39,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:55:39,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-16 15:55:39,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871241617] [2025-03-16 15:55:39,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:55:39,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-16 15:55:39,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:55:39,270 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-16 15:55:39,271 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-16 15:55:39,272 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 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 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 15:55:39,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:55:39,279 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2025-03-16 15:55:39,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-16 15:55:39,280 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2025-03-16 15:55:39,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:55:39,284 INFO L225 Difference]: With dead ends: 26 [2025-03-16 15:55:39,284 INFO L226 Difference]: Without dead ends: 11 [2025-03-16 15:55:39,286 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 15:55:39,287 INFO L435 NwaCegarLoop]: 17 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, 17 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 15:55:39,288 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 15:55:39,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2025-03-16 15:55:39,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2025-03-16 15:55:39,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 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 15:55:39,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2025-03-16 15:55:39,306 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 9 [2025-03-16 15:55:39,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:55:39,306 INFO L471 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2025-03-16 15:55:39,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 15:55:39,307 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2025-03-16 15:55:39,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-16 15:55:39,307 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:55:39,307 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:55:39,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 15:55:39,308 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:55:39,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:55:39,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1448523158, now seen corresponding path program 1 times [2025-03-16 15:55:39,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:55:39,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418801901] [2025-03-16 15:55:39,308 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:55:39,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:55:39,318 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-16 15:55:39,339 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-16 15:55:39,339 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:55:39,339 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:55:39,440 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 15:55:39,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:55:39,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418801901] [2025-03-16 15:55:39,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418801901] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:55:39,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:55:39,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 15:55:39,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851121821] [2025-03-16 15:55:39,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:55:39,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:55:39,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:55:39,443 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:55:39,444 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:55:39,444 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 15:55:39,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:55:39,468 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2025-03-16 15:55:39,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:55:39,469 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2025-03-16 15:55:39,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:55:39,469 INFO L225 Difference]: With dead ends: 21 [2025-03-16 15:55:39,469 INFO L226 Difference]: Without dead ends: 17 [2025-03-16 15:55:39,470 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:55:39,470 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 5 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 15:55:39,470 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 19 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 15:55:39,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2025-03-16 15:55:39,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 12. [2025-03-16 15:55:39,472 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 15:55:39,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2025-03-16 15:55:39,474 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 9 [2025-03-16 15:55:39,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:55:39,475 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2025-03-16 15:55:39,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 15:55:39,475 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2025-03-16 15:55:39,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-03-16 15:55:39,475 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:55:39,475 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:55:39,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 15:55:39,475 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:55:39,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:55:39,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1955406919, now seen corresponding path program 1 times [2025-03-16 15:55:39,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:55:39,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184346631] [2025-03-16 15:55:39,476 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:55:39,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:55:39,490 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-16 15:55:39,506 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-16 15:55:39,509 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:55:39,509 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-16 15:55:39,509 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-16 15:55:39,512 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-16 15:55:39,523 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-16 15:55:39,523 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:55:39,523 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-16 15:55:39,534 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-16 15:55:39,534 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-16 15:55:39,535 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-03-16 15:55:39,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 15:55:39,538 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2025-03-16 15:55:39,549 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-16 15:55:39,552 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.03 03:55:39 BoogieIcfgContainer [2025-03-16 15:55:39,553 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-16 15:55:39,553 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-16 15:55:39,553 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-16 15:55:39,553 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-16 15:55:39,554 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 03:55:39" (3/4) ... [2025-03-16 15:55:39,555 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-03-16 15:55:39,556 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-16 15:55:39,557 INFO L158 Benchmark]: Toolchain (without parser) took 1027.08ms. Allocated memory is still 167.8MB. Free memory was 133.5MB in the beginning and 73.1MB in the end (delta: 60.4MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2025-03-16 15:55:39,557 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 201.3MB. Free memory is still 125.9MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-16 15:55:39,558 INFO L158 Benchmark]: CACSL2BoogieTranslator took 171.52ms. Allocated memory is still 167.8MB. Free memory was 133.5MB in the beginning and 122.0MB in the end (delta: 11.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-16 15:55:39,560 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.48ms. Allocated memory is still 167.8MB. Free memory was 122.0MB in the beginning and 120.4MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-16 15:55:39,560 INFO L158 Benchmark]: Boogie Preprocessor took 43.19ms. Allocated memory is still 167.8MB. Free memory was 120.4MB in the beginning and 118.8MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-16 15:55:39,560 INFO L158 Benchmark]: IcfgBuilder took 251.98ms. Allocated memory is still 167.8MB. Free memory was 118.8MB in the beginning and 105.9MB in the end (delta: 12.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-16 15:55:39,561 INFO L158 Benchmark]: TraceAbstraction took 524.95ms. Allocated memory is still 167.8MB. Free memory was 105.0MB in the beginning and 73.5MB in the end (delta: 31.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-03-16 15:55:39,561 INFO L158 Benchmark]: Witness Printer took 2.89ms. Allocated memory is still 167.8MB. Free memory was 73.5MB in the beginning and 73.1MB in the end (delta: 413.4kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-16 15:55:39,562 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 125.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 171.52ms. Allocated memory is still 167.8MB. Free memory was 133.5MB in the beginning and 122.0MB in the end (delta: 11.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.48ms. Allocated memory is still 167.8MB. Free memory was 122.0MB in the beginning and 120.4MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 43.19ms. Allocated memory is still 167.8MB. Free memory was 120.4MB in the beginning and 118.8MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 251.98ms. Allocated memory is still 167.8MB. Free memory was 118.8MB in the beginning and 105.9MB in the end (delta: 12.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 524.95ms. Allocated memory is still 167.8MB. Free memory was 105.0MB in the beginning and 73.5MB in the end (delta: 31.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Witness Printer took 2.89ms. Allocated memory is still 167.8MB. Free memory was 73.5MB in the beginning and 73.1MB in the end (delta: 413.4kB). 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: 9]: 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 someBinaryFLOATComparisonOperation at line 21, overapproximation of someBinaryFLOATComparisonOperation at line 24, overapproximation of someBinaryFLOATComparisonOperation at line 28, overapproximation of someBinaryFLOATComparisonOperation at line 21, overapproximation of to_real at line 15, overapproximation of someBinaryArithmeticFLOAToperation at line 26. Possible FailurePath: [L13] int i; [L14] float z, t; [L15] float min[] = { 5, 10, 12, 30, 150 }; [L15] float min[] = { 5, 10, 12, 30, 150 }; [L15] float min[] = { 5, 10, 12, 30, 150 }; [L15] float min[] = { 5, 10, 12, 30, 150 }; [L15] float min[] = { 5, 10, 12, 30, 150 }; [L15] float min[] = { 5, 10, 12, 30, 150 }; [L16] float max[] = { 10, 12, 30, 150, 300 }; [L16] float max[] = { 10, 12, 30, 150, 300 }; [L16] float max[] = { 10, 12, 30, 150, 300 }; [L16] float max[] = { 10, 12, 30, 150, 300 }; [L16] float max[] = { 10, 12, 30, 150, 300 }; [L16] float max[] = { 10, 12, 30, 150, 300 }; [L17] float org[] = { 1, 5, -10, 30, 20 }; [L17] float org[] = { 1, 5, -10, 30, 20 }; [L17] float org[] = { 1, 5, -10, 30, 20 }; [L17] float org[] = { 1, 5, -10, 30, 20 }; [L17] float org[] = { 1, 5, -10, 30, 20 }; [L17] float org[] = { 1, 5, -10, 30, 20 }; [L18] float slope[] = { 4, -15, 40, -10, 0 }; [L18] float slope[] = { 4, -15, 40, -10, 0 }; [L18] float slope[] = { 4, -15, 40, -10, 0 }; [L18] float slope[] = { 4, -15, 40, -10, 0 }; [L18] float slope[] = { 4, -15, 40, -10, 0 }; [L18] float slope[] = { 4, -15, 40, -10, 0 }; [L20] t = __VERIFIER_nondet_float() [L21] EXPR min[0] [L21] EXPR t >= min[0] && t <= max[sizeof(max) / sizeof(max[0]) - 1] VAL [max={4:0}] [L21] EXPR t >= min[0] && t <= max[sizeof(max) / sizeof(max[0]) - 1] [L21] EXPR max[sizeof(max) / sizeof(max[0]) - 1] [L21] EXPR t >= min[0] && t <= max[sizeof(max) / sizeof(max[0]) - 1] VAL [max={4:0}] [L21] CALL assume_abort_if_not(t >= min[0] && t <= max[sizeof(max) / sizeof(max[0]) - 1]) [L7] COND FALSE !(!cond) [L21] RET assume_abort_if_not(t >= min[0] && t <= max[sizeof(max) / sizeof(max[0]) - 1]) [L23] i = 0 VAL [i=0, max={4:0}] [L23] COND TRUE i < sizeof(min) / sizeof(min[0]) [L24] EXPR max[i] [L24] COND TRUE t <= max[i] [L26] EXPR org[i] [L26] EXPR slope[i] [L26] EXPR min[i] [L26] EXPR max[i] [L26] EXPR min[i] [L26] z = org[i] + slope[i] * (t - min[i]) / (max[i] - min[i]) [L28] CALL __VERIFIER_assert(z >= -10.f && z <= 30.f) [L9] COND TRUE !(cond) [L9] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 19 edges, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5 mSDsluCounter, 36 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6 IncrementalHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 28 mSDtfsCounter, 6 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 5, 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, 2 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 18 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 15:55:39,576 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/interpolation2.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 5f3bcf3c30f63fe0ad0702712c01ba8d1145d6fb2558cd3e5ee3c870476dc3b1 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 15:55:41,333 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 15:55:41,408 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2025-03-16 15:55:41,413 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 15:55:41,416 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 15:55:41,432 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 15:55:41,433 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 15:55:41,433 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 15:55:41,433 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 15:55:41,434 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 15:55:41,434 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 15:55:41,434 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 15:55:41,434 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 15:55:41,434 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 15:55:41,434 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 15:55:41,434 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 15:55:41,434 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 15:55:41,434 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 15:55:41,435 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 15:55:41,435 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 15:55:41,435 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 15:55:41,435 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 15:55:41,435 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 15:55:41,435 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-16 15:55:41,435 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-16 15:55:41,435 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-16 15:55:41,435 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 15:55:41,435 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 15:55:41,435 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 15:55:41,436 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 15:55:41,436 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 15:55:41,436 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 15:55:41,436 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 15:55:41,436 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 15:55:41,436 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 15:55:41,436 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 15:55:41,436 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 15:55:41,436 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 15:55:41,436 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 15:55:41,436 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-16 15:55:41,437 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-16 15:55:41,437 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 15:55:41,437 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 15:55:41,437 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 15:55:41,437 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 15:55:41,437 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 -> 5f3bcf3c30f63fe0ad0702712c01ba8d1145d6fb2558cd3e5ee3c870476dc3b1 [2025-03-16 15:55:41,674 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 15:55:41,679 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 15:55:41,681 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 15:55:41,682 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 15:55:41,682 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 15:55:41,683 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/interpolation2.c [2025-03-16 15:55:42,866 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8167d5eba/bdd9a8ba0d024a66bf8a28d82c5f141d/FLAG40c1319cd [2025-03-16 15:55:43,040 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 15:55:43,040 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/interpolation2.c [2025-03-16 15:55:43,047 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8167d5eba/bdd9a8ba0d024a66bf8a28d82c5f141d/FLAG40c1319cd [2025-03-16 15:55:43,062 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8167d5eba/bdd9a8ba0d024a66bf8a28d82c5f141d [2025-03-16 15:55:43,065 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 15:55:43,066 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 15:55:43,067 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 15:55:43,067 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 15:55:43,070 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 15:55:43,071 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 03:55:43" (1/1) ... [2025-03-16 15:55:43,071 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e386d33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:55:43, skipping insertion in model container [2025-03-16 15:55:43,071 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 03:55:43" (1/1) ... [2025-03-16 15:55:43,082 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 15:55:43,185 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/interpolation2.c[450,463] [2025-03-16 15:55:43,208 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 15:55:43,224 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 15:55:43,233 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/interpolation2.c[450,463] [2025-03-16 15:55:43,249 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 15:55:43,263 INFO L204 MainTranslator]: Completed translation [2025-03-16 15:55:43,264 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:55:43 WrapperNode [2025-03-16 15:55:43,265 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 15:55:43,265 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 15:55:43,266 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 15:55:43,266 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 15:55:43,271 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:55:43" (1/1) ... [2025-03-16 15:55:43,279 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:55:43" (1/1) ... [2025-03-16 15:55:43,301 INFO L138 Inliner]: procedures = 19, calls = 49, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 98 [2025-03-16 15:55:43,302 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 15:55:43,303 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 15:55:43,303 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 15:55:43,303 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 15:55:43,308 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:55:43" (1/1) ... [2025-03-16 15:55:43,309 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:55:43" (1/1) ... [2025-03-16 15:55:43,313 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:55:43" (1/1) ... [2025-03-16 15:55:43,324 INFO L175 MemorySlicer]: Split 30 memory accesses to 5 slices as follows [2, 8, 6, 6, 8]. 27 percent of accesses are in the largest equivalence class. The 22 initializations are split as follows [2, 5, 5, 5, 5]. The 0 writes are split as follows [0, 0, 0, 0, 0]. [2025-03-16 15:55:43,329 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:55:43" (1/1) ... [2025-03-16 15:55:43,329 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:55:43" (1/1) ... [2025-03-16 15:55:43,338 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:55:43" (1/1) ... [2025-03-16 15:55:43,343 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:55:43" (1/1) ... [2025-03-16 15:55:43,344 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:55:43" (1/1) ... [2025-03-16 15:55:43,345 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:55:43" (1/1) ... [2025-03-16 15:55:43,351 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 15:55:43,352 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 15:55:43,352 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 15:55:43,352 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 15:55:43,353 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:55:43" (1/1) ... [2025-03-16 15:55:43,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 15:55:43,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 15:55:43,382 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 15:55:43,385 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 15:55:43,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 15:55:43,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#0 [2025-03-16 15:55:43,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#1 [2025-03-16 15:55:43,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#2 [2025-03-16 15:55:43,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#3 [2025-03-16 15:55:43,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#4 [2025-03-16 15:55:43,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-16 15:55:43,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-03-16 15:55:43,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2025-03-16 15:55:43,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2025-03-16 15:55:43,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2025-03-16 15:55:43,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-16 15:55:43,406 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#0 [2025-03-16 15:55:43,406 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#1 [2025-03-16 15:55:43,406 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#2 [2025-03-16 15:55:43,406 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#3 [2025-03-16 15:55:43,406 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#4 [2025-03-16 15:55:43,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 15:55:43,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 15:55:43,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-16 15:55:43,465 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 15:55:43,467 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 15:55:47,744 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L15: call ULTIMATE.dealloc(main_~#min~0#1.base, main_~#min~0#1.offset);havoc main_~#min~0#1.base, main_~#min~0#1.offset;call ULTIMATE.dealloc(main_~#max~0#1.base, main_~#max~0#1.offset);havoc main_~#max~0#1.base, main_~#max~0#1.offset;call ULTIMATE.dealloc(main_~#org~0#1.base, main_~#org~0#1.offset);havoc main_~#org~0#1.base, main_~#org~0#1.offset;call ULTIMATE.dealloc(main_~#slope~0#1.base, main_~#slope~0#1.offset);havoc main_~#slope~0#1.base, main_~#slope~0#1.offset; [2025-03-16 15:55:47,756 INFO L? ?]: Removed 17 outVars from TransFormulas that were not future-live. [2025-03-16 15:55:47,756 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 15:55:47,762 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 15:55:47,762 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 15:55:47,762 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 03:55:47 BoogieIcfgContainer [2025-03-16 15:55:47,762 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 15:55:47,764 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 15:55:47,764 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 15:55:47,767 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 15:55:47,767 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 03:55:43" (1/3) ... [2025-03-16 15:55:47,768 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6532f21e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 03:55:47, skipping insertion in model container [2025-03-16 15:55:47,768 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:55:43" (2/3) ... [2025-03-16 15:55:47,768 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6532f21e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 03:55:47, skipping insertion in model container [2025-03-16 15:55:47,768 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 03:55:47" (3/3) ... [2025-03-16 15:55:47,769 INFO L128 eAbstractionObserver]: Analyzing ICFG interpolation2.c [2025-03-16 15:55:47,778 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 15:55:47,779 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG interpolation2.c that has 1 procedures, 15 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-16 15:55:47,809 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 15:55:47,817 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;@df8c79f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 15:55:47,817 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 15:55:47,820 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 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 15:55:47,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-16 15:55:47,823 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:55:47,823 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:55:47,824 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:55:47,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:55:47,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1477152309, now seen corresponding path program 1 times [2025-03-16 15:55:47,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-16 15:55:47,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [308262448] [2025-03-16 15:55:47,834 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:55:47,835 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 15:55:47,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2025-03-16 15:55:47,837 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 15:55:47,839 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 15:55:47,908 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-16 15:55:48,169 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-16 15:55:48,170 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:55:48,170 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:55:48,181 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-16 15:55:48,184 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 15:55:48,195 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 15:55:48,195 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 15:55:48,197 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-16 15:55:48,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [308262448] [2025-03-16 15:55:48,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [308262448] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:55:48,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:55:48,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-16 15:55:48,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685614729] [2025-03-16 15:55:48,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:55:48,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-16 15:55:48,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-16 15:55:48,213 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-16 15:55:48,214 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-16 15:55:48,215 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 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 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 15:55:48,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:55:48,222 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2025-03-16 15:55:48,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-16 15:55:48,223 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2025-03-16 15:55:48,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:55:48,226 INFO L225 Difference]: With dead ends: 26 [2025-03-16 15:55:48,227 INFO L226 Difference]: Without dead ends: 11 [2025-03-16 15:55:48,228 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 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 15:55:48,230 INFO L435 NwaCegarLoop]: 17 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, 17 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 15:55:48,231 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 15:55:48,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2025-03-16 15:55:48,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2025-03-16 15:55:48,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 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 15:55:48,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2025-03-16 15:55:48,249 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 9 [2025-03-16 15:55:48,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:55:48,249 INFO L471 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2025-03-16 15:55:48,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 15:55:48,249 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2025-03-16 15:55:48,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-16 15:55:48,249 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:55:48,249 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:55:48,261 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 15:55:48,450 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 15:55:48,451 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:55:48,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:55:48,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1448523158, now seen corresponding path program 1 times [2025-03-16 15:55:48,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-16 15:55:48,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1676987112] [2025-03-16 15:55:48,452 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:55:48,452 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 15:55:48,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2025-03-16 15:55:48,454 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 15:55:48,456 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 15:55:48,512 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-16 15:55:48,766 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-16 15:55:48,766 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:55:48,766 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:55:48,777 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 15:55:48,778 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 15:55:48,826 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 15:55:48,827 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 15:55:48,827 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-16 15:55:48,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1676987112] [2025-03-16 15:55:48,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1676987112] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:55:48,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:55:48,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 15:55:48,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321766891] [2025-03-16 15:55:48,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:55:48,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:55:48,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-16 15:55:48,828 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:55:48,828 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:55:48,829 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 15:55:53,006 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-16 15:55:57,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-16 15:56:01,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-16 15:56:01,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:56:01,215 INFO L93 Difference]: Finished difference Result 18 states and 21 transitions. [2025-03-16 15:56:01,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:56:01,267 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2025-03-16 15:56:01,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:56:01,268 INFO L225 Difference]: With dead ends: 18 [2025-03-16 15:56:01,268 INFO L226 Difference]: Without dead ends: 14 [2025-03-16 15:56:01,268 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:56:01,268 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2025-03-16 15:56:01,269 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 18 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 3 Unknown, 0 Unchecked, 12.4s Time] [2025-03-16 15:56:01,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2025-03-16 15:56:01,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2025-03-16 15:56:01,271 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 15:56:01,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2025-03-16 15:56:01,271 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 9 [2025-03-16 15:56:01,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:56:01,271 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2025-03-16 15:56:01,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 15:56:01,271 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2025-03-16 15:56:01,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-03-16 15:56:01,271 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:56:01,272 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:56:01,283 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 (3)] Ended with exit code 0 [2025-03-16 15:56:01,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /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 15:56:01,472 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:56:01,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:56:01,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1955406919, now seen corresponding path program 1 times [2025-03-16 15:56:01,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-16 15:56:01,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [51759120] [2025-03-16 15:56:01,473 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:56:01,473 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 15:56:01,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2025-03-16 15:56:01,475 INFO L229 MonitoredProcess]: Starting monitored process 4 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 15:56:01,476 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 (4)] Waiting until timeout for monitored process [2025-03-16 15:56:01,521 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-16 15:56:01,961 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-16 15:56:01,961 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:56:01,961 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:56:01,975 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-03-16 15:56:01,979 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 15:56:05,903 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 499 treesize of output 379 [2025-03-16 15:56:05,928 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 382 treesize of output 322 [2025-03-16 15:56:06,011 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-16 15:56:06,011 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 378 treesize of output 294 [2025-03-16 15:56:06,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 286 treesize of output 226 [2025-03-16 15:56:18,931 WARN L286 SmtUtils]: Spent 8.07s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2025-03-16 15:56:27,084 WARN L286 SmtUtils]: Spent 8.15s 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) [2025-03-16 15:56:47,634 WARN L286 SmtUtils]: Spent 8.14s 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) [2025-03-16 15:56:59,261 WARN L286 SmtUtils]: Spent 5.75s on a formula simplification that was a NOOP. DAG size: 30 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2025-03-16 15:57:07,091 WARN L286 SmtUtils]: Spent 7.83s 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) [2025-03-16 15:57:17,197 WARN L286 SmtUtils]: Spent 5.20s on a formula simplification that was a NOOP. DAG size: 31 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)