./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4f9af400 extending candidate: java ['java'] extending candidate: /usr/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/oracle-jdk-bin-*/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/openjdk-*/bin/java ['java', '/usr/bin/java'] extending candidate: /usr/lib/jvm/java-*-openjdk-amd64/bin/java ['java', '/usr/bin/java', '/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java', '/usr/lib/jvm/java-17-openjdk-amd64/bin/java', '/usr/lib/jvm/java-11-openjdk-amd64/bin/java', '/usr/lib/jvm/java-1.17.0-openjdk-amd64/bin/java'] ['/root/.sdkman/candidates/java/21.0.5-tem/bin/java', '-Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config', '-Xmx15G', '-Xms4m', '-jar', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar', '-data', '@noDefault', '-ultimatedata', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data', '-tc', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml', '-i', '../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c', '-s', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf', '--cacsl2boogietranslator.entry.function', 'main', '--witnessprinter.witness.directory', '/storage/repos/ultimate-jdk21/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())) )\n\n', '--witnessprinter.graph.data.producer', 'Automizer', '--witnessprinter.graph.data.architecture', '32bit', '--witnessprinter.graph.data.programhash', 'c7e459611ed6ff9d4c49aa04980ca7f1d5aaaf97e8fc0116c264955df4ed453a'] Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 c7e459611ed6ff9d4c49aa04980ca7f1d5aaaf97e8fc0116c264955df4ed453a --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-06 18:50:14,734 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 18:50:14,810 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-06 18:50:14,816 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 18:50:14,817 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 18:50:14,846 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 18:50:14,847 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 18:50:14,847 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 18:50:14,847 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 18:50:14,847 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 18:50:14,848 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 18:50:14,848 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 18:50:14,848 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 18:50:14,848 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 18:50:14,848 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 18:50:14,848 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 18:50:14,848 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 18:50:14,848 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-06 18:50:14,848 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-06 18:50:14,848 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-06 18:50:14,848 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 18:50:14,849 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 18:50:14,849 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 18:50:14,849 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 18:50:14,849 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 18:50:14,849 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-06 18:50:14,849 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 18:50:14,849 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 18:50:14,851 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 18:50:14,851 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 18:50:14,851 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 18:50:14,852 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 18:50:14,852 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 18:50:14,852 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 18:50:14,852 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 18:50:14,852 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 18:50:14,853 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-06 18:50:14,853 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-06 18:50:14,853 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 18:50:14,853 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 18:50:14,854 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 18:50:14,854 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 18:50:14,854 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-jdk21/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 -> c7e459611ed6ff9d4c49aa04980ca7f1d5aaaf97e8fc0116c264955df4ed453a [2024-11-06 18:50:15,138 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 18:50:15,148 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 18:50:15,150 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 18:50:15,150 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 18:50:15,151 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 18:50:15,153 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2024-11-06 18:50:16,402 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 18:50:16,701 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 18:50:16,702 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2024-11-06 18:50:16,711 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7f522c255/cc5d44761d604ea889400b279eeedcbd/FLAG76e67bf02 [2024-11-06 18:50:17,008 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7f522c255/cc5d44761d604ea889400b279eeedcbd [2024-11-06 18:50:17,010 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 18:50:17,011 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-06 18:50:17,012 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 18:50:17,012 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 18:50:17,015 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 18:50:17,016 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:50:17" (1/1) ... [2024-11-06 18:50:17,017 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2756ce7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:50:17, skipping insertion in model container [2024-11-06 18:50:17,017 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:50:17" (1/1) ... [2024-11-06 18:50:17,036 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 18:50:17,156 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c[730,743] [2024-11-06 18:50:17,192 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 18:50:17,203 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 18:50:17,214 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c[730,743] [2024-11-06 18:50:17,242 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 18:50:17,258 INFO L204 MainTranslator]: Completed translation [2024-11-06 18:50:17,258 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:50:17 WrapperNode [2024-11-06 18:50:17,259 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 18:50:17,260 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 18:50:17,260 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 18:50:17,260 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 18:50:17,266 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:50:17" (1/1) ... [2024-11-06 18:50:17,275 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:50:17" (1/1) ... [2024-11-06 18:50:17,300 INFO L138 Inliner]: procedures = 17, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 56 [2024-11-06 18:50:17,301 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 18:50:17,302 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 18:50:17,302 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 18:50:17,303 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 18:50:17,310 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:50:17" (1/1) ... [2024-11-06 18:50:17,311 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:50:17" (1/1) ... [2024-11-06 18:50:17,313 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:50:17" (1/1) ... [2024-11-06 18:50:17,329 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-06 18:50:17,330 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:50:17" (1/1) ... [2024-11-06 18:50:17,330 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:50:17" (1/1) ... [2024-11-06 18:50:17,334 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:50:17" (1/1) ... [2024-11-06 18:50:17,340 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:50:17" (1/1) ... [2024-11-06 18:50:17,341 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:50:17" (1/1) ... [2024-11-06 18:50:17,342 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:50:17" (1/1) ... [2024-11-06 18:50:17,344 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 18:50:17,348 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 18:50:17,348 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 18:50:17,348 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 18:50:17,349 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:50:17" (1/1) ... [2024-11-06 18:50:17,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 18:50:17,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:50:17,382 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-06 18:50:17,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-06 18:50:17,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 18:50:17,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-06 18:50:17,410 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2024-11-06 18:50:17,411 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2024-11-06 18:50:17,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 18:50:17,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 18:50:17,411 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2024-11-06 18:50:17,411 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2024-11-06 18:50:17,411 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-06 18:50:17,411 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-06 18:50:17,472 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 18:50:17,473 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 18:50:17,747 INFO L? ?]: Removed 52 outVars from TransFormulas that were not future-live. [2024-11-06 18:50:17,747 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 18:50:17,756 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 18:50:17,756 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-06 18:50:17,756 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:50:17 BoogieIcfgContainer [2024-11-06 18:50:17,756 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 18:50:17,761 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 18:50:17,761 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 18:50:17,765 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 18:50:17,766 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 06:50:17" (1/3) ... [2024-11-06 18:50:17,766 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d157620 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:50:17, skipping insertion in model container [2024-11-06 18:50:17,766 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:50:17" (2/3) ... [2024-11-06 18:50:17,766 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d157620 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:50:17, skipping insertion in model container [2024-11-06 18:50:17,767 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:50:17" (3/3) ... [2024-11-06 18:50:17,768 INFO L112 eAbstractionObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2024-11-06 18:50:17,782 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 18:50:17,783 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-06 18:50:17,828 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 18:50:17,837 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;@9e328a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 18:50:17,837 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-06 18:50:17,841 INFO L276 IsEmpty]: Start isEmpty. Operand has 78 states, 64 states have (on average 1.5) internal successors, (96), 65 states have internal predecessors, (96), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-06 18:50:17,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-06 18:50:17,847 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:17,847 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:17,848 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:17,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:17,851 INFO L85 PathProgramCache]: Analyzing trace with hash 453789429, now seen corresponding path program 1 times [2024-11-06 18:50:17,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:17,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435643514] [2024-11-06 18:50:17,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:17,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:17,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:18,376 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:18,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:18,387 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:18,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:18,448 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-06 18:50:18,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:18,462 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-06 18:50:18,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:18,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435643514] [2024-11-06 18:50:18,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435643514] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:50:18,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356048220] [2024-11-06 18:50:18,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:18,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:18,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:50:18,468 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:50:18,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-06 18:50:18,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:18,567 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-06 18:50:18,574 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:50:18,631 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-06 18:50:18,633 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:50:18,834 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-06 18:50:18,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356048220] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:50:18,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:50:18,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-11-06 18:50:18,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725536723] [2024-11-06 18:50:18,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:50:18,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-06 18:50:18,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:18,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-06 18:50:18,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2024-11-06 18:50:18,858 INFO L87 Difference]: Start difference. First operand has 78 states, 64 states have (on average 1.5) internal successors, (96), 65 states have internal predecessors, (96), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 16 states, 16 states have (on average 1.875) internal successors, (30), 12 states have internal predecessors, (30), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-06 18:50:19,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:19,075 INFO L93 Difference]: Finished difference Result 176 states and 271 transitions. [2024-11-06 18:50:19,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-06 18:50:19,079 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 12 states have internal predecessors, (30), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 35 [2024-11-06 18:50:19,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:19,088 INFO L225 Difference]: With dead ends: 176 [2024-11-06 18:50:19,088 INFO L226 Difference]: Without dead ends: 95 [2024-11-06 18:50:19,092 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2024-11-06 18:50:19,096 INFO L432 NwaCegarLoop]: 100 mSDtfsCounter, 25 mSDsluCounter, 1181 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 1281 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:19,099 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 1281 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:50:19,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-06 18:50:19,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 87. [2024-11-06 18:50:19,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 70 states have (on average 1.3714285714285714) internal successors, (96), 72 states have internal predecessors, (96), 11 states have call successors, (11), 4 states have call predecessors, (11), 5 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) [2024-11-06 18:50:19,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 121 transitions. [2024-11-06 18:50:19,145 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 121 transitions. Word has length 35 [2024-11-06 18:50:19,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:19,146 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 121 transitions. [2024-11-06 18:50:19,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 12 states have internal predecessors, (30), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-06 18:50:19,146 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 121 transitions. [2024-11-06 18:50:19,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-06 18:50:19,148 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:19,148 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:19,167 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-06 18:50:19,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-06 18:50:19,349 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:19,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:19,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1079320092, now seen corresponding path program 1 times [2024-11-06 18:50:19,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:19,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003011731] [2024-11-06 18:50:19,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:19,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:19,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:19,513 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:19,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:19,516 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:19,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:19,520 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-06 18:50:19,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:19,551 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-06 18:50:19,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:19,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003011731] [2024-11-06 18:50:19,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003011731] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:50:19,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:50:19,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-06 18:50:19,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004225108] [2024-11-06 18:50:19,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:50:19,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-06 18:50:19,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:19,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-06 18:50:19,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-06 18:50:19,553 INFO L87 Difference]: Start difference. First operand 87 states and 121 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-06 18:50:19,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:19,626 INFO L93 Difference]: Finished difference Result 159 states and 216 transitions. [2024-11-06 18:50:19,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-06 18:50:19,628 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2024-11-06 18:50:19,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:19,629 INFO L225 Difference]: With dead ends: 159 [2024-11-06 18:50:19,629 INFO L226 Difference]: Without dead ends: 110 [2024-11-06 18:50:19,630 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-06 18:50:19,630 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 13 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:19,631 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 670 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 18:50:19,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-06 18:50:19,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 95. [2024-11-06 18:50:19,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 76 states have (on average 1.3421052631578947) internal successors, (102), 78 states have internal predecessors, (102), 12 states have call successors, (12), 5 states have call predecessors, (12), 6 states have return successors, (15), 11 states have call predecessors, (15), 11 states have call successors, (15) [2024-11-06 18:50:19,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 129 transitions. [2024-11-06 18:50:19,644 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 129 transitions. Word has length 39 [2024-11-06 18:50:19,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:19,645 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 129 transitions. [2024-11-06 18:50:19,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-06 18:50:19,645 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 129 transitions. [2024-11-06 18:50:19,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-06 18:50:19,650 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:19,650 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:19,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-06 18:50:19,650 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:19,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:19,650 INFO L85 PathProgramCache]: Analyzing trace with hash -879159838, now seen corresponding path program 1 times [2024-11-06 18:50:19,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:19,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106306103] [2024-11-06 18:50:19,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:19,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:19,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:19,845 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:19,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:19,850 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:19,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:19,854 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-06 18:50:19,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:19,890 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-06 18:50:19,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:19,900 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-06 18:50:19,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:19,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106306103] [2024-11-06 18:50:19,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106306103] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:50:19,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:50:19,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-06 18:50:19,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326741018] [2024-11-06 18:50:19,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:50:19,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-06 18:50:19,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:19,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-06 18:50:19,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-06 18:50:19,903 INFO L87 Difference]: Start difference. First operand 95 states and 129 transitions. Second operand has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:50:20,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:20,032 INFO L93 Difference]: Finished difference Result 178 states and 244 transitions. [2024-11-06 18:50:20,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-06 18:50:20,033 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 43 [2024-11-06 18:50:20,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:20,035 INFO L225 Difference]: With dead ends: 178 [2024-11-06 18:50:20,035 INFO L226 Difference]: Without dead ends: 138 [2024-11-06 18:50:20,035 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-06 18:50:20,036 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 83 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:20,036 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 789 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:50:20,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-11-06 18:50:20,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 130. [2024-11-06 18:50:20,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 106 states have (on average 1.3584905660377358) internal successors, (144), 108 states have internal predecessors, (144), 16 states have call successors, (16), 6 states have call predecessors, (16), 7 states have return successors, (19), 15 states have call predecessors, (19), 15 states have call successors, (19) [2024-11-06 18:50:20,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 179 transitions. [2024-11-06 18:50:20,050 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 179 transitions. Word has length 43 [2024-11-06 18:50:20,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:20,050 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 179 transitions. [2024-11-06 18:50:20,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:50:20,051 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 179 transitions. [2024-11-06 18:50:20,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-06 18:50:20,052 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:20,052 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:20,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-06 18:50:20,053 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:20,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:20,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1272186848, now seen corresponding path program 1 times [2024-11-06 18:50:20,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:20,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324288078] [2024-11-06 18:50:20,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:20,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:20,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:20,211 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:20,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:20,214 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:20,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:20,239 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-06 18:50:20,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:20,246 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-06 18:50:20,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:20,251 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-06 18:50:20,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:20,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324288078] [2024-11-06 18:50:20,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324288078] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:50:20,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746950557] [2024-11-06 18:50:20,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:20,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:20,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:50:20,254 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:50:20,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-06 18:50:20,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:20,329 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-06 18:50:20,330 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:50:20,358 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-06 18:50:20,359 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:50:20,520 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-06 18:50:20,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746950557] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:50:20,521 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:50:20,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-11-06 18:50:20,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745165145] [2024-11-06 18:50:20,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:50:20,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-06 18:50:20,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:20,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-06 18:50:20,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-06 18:50:20,522 INFO L87 Difference]: Start difference. First operand 130 states and 179 transitions. Second operand has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 10 states have internal predecessors, (37), 4 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-06 18:50:20,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:20,621 INFO L93 Difference]: Finished difference Result 224 states and 308 transitions. [2024-11-06 18:50:20,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-06 18:50:20,622 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 10 states have internal predecessors, (37), 4 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 43 [2024-11-06 18:50:20,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:20,623 INFO L225 Difference]: With dead ends: 224 [2024-11-06 18:50:20,623 INFO L226 Difference]: Without dead ends: 153 [2024-11-06 18:50:20,624 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-11-06 18:50:20,628 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 16 mSDsluCounter, 900 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1002 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:20,628 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1002 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:50:20,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2024-11-06 18:50:20,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 140. [2024-11-06 18:50:20,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 113 states have (on average 1.336283185840708) internal successors, (151), 115 states have internal predecessors, (151), 18 states have call successors, (18), 7 states have call predecessors, (18), 8 states have return successors, (21), 17 states have call predecessors, (21), 17 states have call successors, (21) [2024-11-06 18:50:20,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 190 transitions. [2024-11-06 18:50:20,650 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 190 transitions. Word has length 43 [2024-11-06 18:50:20,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:20,650 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 190 transitions. [2024-11-06 18:50:20,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 10 states have internal predecessors, (37), 4 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-06 18:50:20,653 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 190 transitions. [2024-11-06 18:50:20,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-06 18:50:20,654 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:20,654 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:20,671 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-06 18:50:20,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:20,855 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:20,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:20,855 INFO L85 PathProgramCache]: Analyzing trace with hash -642851046, now seen corresponding path program 1 times [2024-11-06 18:50:20,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:20,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270359544] [2024-11-06 18:50:20,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:20,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:20,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:21,065 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:21,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:21,070 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:21,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:21,114 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-06 18:50:21,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:21,131 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-06 18:50:21,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:21,254 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-06 18:50:21,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:21,297 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-06 18:50:21,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:21,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270359544] [2024-11-06 18:50:21,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270359544] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:50:21,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:50:21,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-06 18:50:21,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356164892] [2024-11-06 18:50:21,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:50:21,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-06 18:50:21,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:21,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-06 18:50:21,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2024-11-06 18:50:21,299 INFO L87 Difference]: Start difference. First operand 140 states and 190 transitions. Second operand has 15 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 5 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-06 18:50:21,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:21,545 INFO L93 Difference]: Finished difference Result 203 states and 273 transitions. [2024-11-06 18:50:21,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-06 18:50:21,545 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 5 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 44 [2024-11-06 18:50:21,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:21,547 INFO L225 Difference]: With dead ends: 203 [2024-11-06 18:50:21,547 INFO L226 Difference]: Without dead ends: 195 [2024-11-06 18:50:21,547 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2024-11-06 18:50:21,548 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 56 mSDsluCounter, 1092 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 1194 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:21,549 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 1194 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 18:50:21,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-11-06 18:50:21,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 145. [2024-11-06 18:50:21,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 117 states have (on average 1.3247863247863247) internal successors, (155), 118 states have internal predecessors, (155), 19 states have call successors, (19), 7 states have call predecessors, (19), 8 states have return successors, (22), 19 states have call predecessors, (22), 18 states have call successors, (22) [2024-11-06 18:50:21,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 196 transitions. [2024-11-06 18:50:21,565 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 196 transitions. Word has length 44 [2024-11-06 18:50:21,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:21,568 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 196 transitions. [2024-11-06 18:50:21,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 5 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-06 18:50:21,568 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 196 transitions. [2024-11-06 18:50:21,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-06 18:50:21,570 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:21,570 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:21,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-06 18:50:21,570 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:21,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:21,570 INFO L85 PathProgramCache]: Analyzing trace with hash 879448533, now seen corresponding path program 2 times [2024-11-06 18:50:21,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:21,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999523541] [2024-11-06 18:50:21,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:21,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:21,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:21,678 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:21,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:21,681 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:21,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:21,716 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-06 18:50:21,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:21,722 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-06 18:50:21,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:21,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999523541] [2024-11-06 18:50:21,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999523541] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:50:21,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445104195] [2024-11-06 18:50:21,723 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 18:50:21,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:21,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:50:21,725 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:50:21,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-06 18:50:21,787 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-06 18:50:21,787 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:50:21,789 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-06 18:50:21,790 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:50:21,933 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-06 18:50:21,933 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 18:50:21,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445104195] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:50:21,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 18:50:21,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [8] total 13 [2024-11-06 18:50:21,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089628066] [2024-11-06 18:50:21,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:50:21,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-06 18:50:21,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:21,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-06 18:50:21,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-11-06 18:50:21,935 INFO L87 Difference]: Start difference. First operand 145 states and 196 transitions. Second operand has 10 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-06 18:50:22,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:22,160 INFO L93 Difference]: Finished difference Result 286 states and 391 transitions. [2024-11-06 18:50:22,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-06 18:50:22,161 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 43 [2024-11-06 18:50:22,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:22,163 INFO L225 Difference]: With dead ends: 286 [2024-11-06 18:50:22,164 INFO L226 Difference]: Without dead ends: 229 [2024-11-06 18:50:22,164 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2024-11-06 18:50:22,165 INFO L432 NwaCegarLoop]: 152 mSDtfsCounter, 95 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 1238 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:22,165 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 1238 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 18:50:22,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2024-11-06 18:50:22,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 192. [2024-11-06 18:50:22,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 156 states have (on average 1.3205128205128205) internal successors, (206), 158 states have internal predecessors, (206), 24 states have call successors, (24), 9 states have call predecessors, (24), 11 states have return successors, (31), 24 states have call predecessors, (31), 23 states have call successors, (31) [2024-11-06 18:50:22,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 261 transitions. [2024-11-06 18:50:22,193 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 261 transitions. Word has length 43 [2024-11-06 18:50:22,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:22,195 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 261 transitions. [2024-11-06 18:50:22,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-06 18:50:22,195 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 261 transitions. [2024-11-06 18:50:22,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-06 18:50:22,196 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:22,196 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:22,214 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-06 18:50:22,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:22,402 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:22,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:22,402 INFO L85 PathProgramCache]: Analyzing trace with hash 486421523, now seen corresponding path program 1 times [2024-11-06 18:50:22,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:22,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16501132] [2024-11-06 18:50:22,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:22,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:22,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:22,729 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:22,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:22,731 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:22,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:22,734 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-06 18:50:22,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:22,775 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-06 18:50:22,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:22,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16501132] [2024-11-06 18:50:22,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16501132] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:50:22,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:50:22,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-06 18:50:22,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738406476] [2024-11-06 18:50:22,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:50:22,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-06 18:50:22,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:22,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-06 18:50:22,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-06 18:50:22,779 INFO L87 Difference]: Start difference. First operand 192 states and 261 transitions. Second operand has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 9 states have internal predecessors, (27), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-06 18:50:22,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:22,979 INFO L93 Difference]: Finished difference Result 207 states and 279 transitions. [2024-11-06 18:50:22,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-06 18:50:22,980 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 9 states have internal predecessors, (27), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 43 [2024-11-06 18:50:22,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:22,982 INFO L225 Difference]: With dead ends: 207 [2024-11-06 18:50:22,982 INFO L226 Difference]: Without dead ends: 205 [2024-11-06 18:50:22,982 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2024-11-06 18:50:22,983 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 72 mSDsluCounter, 1076 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 1191 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:22,983 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 1191 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:50:22,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2024-11-06 18:50:23,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 196. [2024-11-06 18:50:23,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 159 states have (on average 1.3144654088050314) internal successors, (209), 161 states have internal predecessors, (209), 24 states have call successors, (24), 10 states have call predecessors, (24), 12 states have return successors, (31), 24 states have call predecessors, (31), 23 states have call successors, (31) [2024-11-06 18:50:23,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 264 transitions. [2024-11-06 18:50:23,003 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 264 transitions. Word has length 43 [2024-11-06 18:50:23,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:23,003 INFO L471 AbstractCegarLoop]: Abstraction has 196 states and 264 transitions. [2024-11-06 18:50:23,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 9 states have internal predecessors, (27), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-06 18:50:23,004 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 264 transitions. [2024-11-06 18:50:23,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-06 18:50:23,005 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:23,005 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:23,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-06 18:50:23,006 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:23,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:23,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1201861858, now seen corresponding path program 1 times [2024-11-06 18:50:23,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:23,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579377486] [2024-11-06 18:50:23,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:23,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:23,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:23,076 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:23,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:23,078 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:23,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:23,081 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-06 18:50:23,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:23,083 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-06 18:50:23,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:23,086 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-06 18:50:23,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:23,089 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-06 18:50:23,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:23,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579377486] [2024-11-06 18:50:23,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579377486] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:50:23,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:50:23,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-06 18:50:23,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737661022] [2024-11-06 18:50:23,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:50:23,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-06 18:50:23,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:23,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-06 18:50:23,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-06 18:50:23,091 INFO L87 Difference]: Start difference. First operand 196 states and 264 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-06 18:50:23,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:23,125 INFO L93 Difference]: Finished difference Result 204 states and 271 transitions. [2024-11-06 18:50:23,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-06 18:50:23,125 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 46 [2024-11-06 18:50:23,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:23,127 INFO L225 Difference]: With dead ends: 204 [2024-11-06 18:50:23,127 INFO L226 Difference]: Without dead ends: 189 [2024-11-06 18:50:23,127 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-06 18:50:23,128 INFO L432 NwaCegarLoop]: 100 mSDtfsCounter, 3 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:23,128 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 491 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 18:50:23,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-11-06 18:50:23,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2024-11-06 18:50:23,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 154 states have (on average 1.3181818181818181) internal successors, (203), 157 states have internal predecessors, (203), 22 states have call successors, (22), 10 states have call predecessors, (22), 12 states have return successors, (28), 21 states have call predecessors, (28), 21 states have call successors, (28) [2024-11-06 18:50:23,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 253 transitions. [2024-11-06 18:50:23,140 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 253 transitions. Word has length 46 [2024-11-06 18:50:23,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:23,140 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 253 transitions. [2024-11-06 18:50:23,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-06 18:50:23,140 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 253 transitions. [2024-11-06 18:50:23,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-06 18:50:23,141 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:23,141 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:23,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-06 18:50:23,141 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:23,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:23,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1225681735, now seen corresponding path program 1 times [2024-11-06 18:50:23,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:23,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889956547] [2024-11-06 18:50:23,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:23,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:23,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:23,239 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:23,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:23,242 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:23,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:23,245 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-06 18:50:23,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:23,248 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-06 18:50:23,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:23,291 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-06 18:50:23,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:23,333 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-06 18:50:23,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:23,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889956547] [2024-11-06 18:50:23,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889956547] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:50:23,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559557068] [2024-11-06 18:50:23,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:23,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:23,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:50:23,336 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:50:23,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-06 18:50:23,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:23,393 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-06 18:50:23,395 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:50:23,581 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-06 18:50:23,581 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:50:24,014 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-06 18:50:24,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559557068] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:50:24,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:50:24,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17, 13] total 32 [2024-11-06 18:50:24,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78756650] [2024-11-06 18:50:24,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:50:24,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-06 18:50:24,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:24,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-06 18:50:24,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=904, Unknown=0, NotChecked=0, Total=992 [2024-11-06 18:50:24,017 INFO L87 Difference]: Start difference. First operand 189 states and 253 transitions. Second operand has 32 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 25 states have internal predecessors, (50), 6 states have call successors, (9), 2 states have call predecessors, (9), 6 states have return successors, (10), 8 states have call predecessors, (10), 5 states have call successors, (10) [2024-11-06 18:50:25,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:25,674 INFO L93 Difference]: Finished difference Result 404 states and 573 transitions. [2024-11-06 18:50:25,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-06 18:50:25,675 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 25 states have internal predecessors, (50), 6 states have call successors, (9), 2 states have call predecessors, (9), 6 states have return successors, (10), 8 states have call predecessors, (10), 5 states have call successors, (10) Word has length 48 [2024-11-06 18:50:25,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:25,678 INFO L225 Difference]: With dead ends: 404 [2024-11-06 18:50:25,678 INFO L226 Difference]: Without dead ends: 379 [2024-11-06 18:50:25,680 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 684 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=327, Invalid=3579, Unknown=0, NotChecked=0, Total=3906 [2024-11-06 18:50:25,680 INFO L432 NwaCegarLoop]: 197 mSDtfsCounter, 282 mSDsluCounter, 4046 mSDsCounter, 0 mSdLazyCounter, 1230 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 4243 SdHoareTripleChecker+Invalid, 1309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:25,680 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 4243 Invalid, 1309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1230 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-06 18:50:25,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2024-11-06 18:50:25,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 234. [2024-11-06 18:50:25,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 189 states have (on average 1.3015873015873016) internal successors, (246), 196 states have internal predecessors, (246), 28 states have call successors, (28), 9 states have call predecessors, (28), 16 states have return successors, (45), 28 states have call predecessors, (45), 27 states have call successors, (45) [2024-11-06 18:50:25,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 319 transitions. [2024-11-06 18:50:25,702 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 319 transitions. Word has length 48 [2024-11-06 18:50:25,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:25,703 INFO L471 AbstractCegarLoop]: Abstraction has 234 states and 319 transitions. [2024-11-06 18:50:25,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 25 states have internal predecessors, (50), 6 states have call successors, (9), 2 states have call predecessors, (9), 6 states have return successors, (10), 8 states have call predecessors, (10), 5 states have call successors, (10) [2024-11-06 18:50:25,703 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 319 transitions. [2024-11-06 18:50:25,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-06 18:50:25,704 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:25,704 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:25,721 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-06 18:50:25,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-06 18:50:25,905 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:25,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:25,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1683702903, now seen corresponding path program 2 times [2024-11-06 18:50:25,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:25,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121058484] [2024-11-06 18:50:25,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:25,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:25,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:26,018 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:26,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:26,021 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:26,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:26,024 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-06 18:50:26,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:26,026 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-06 18:50:26,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:26,054 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-06 18:50:26,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:26,104 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-06 18:50:26,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:26,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121058484] [2024-11-06 18:50:26,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121058484] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:50:26,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878670778] [2024-11-06 18:50:26,105 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 18:50:26,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:26,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:50:26,107 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:50:26,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-06 18:50:26,169 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 18:50:26,169 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:50:26,170 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-06 18:50:26,172 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:50:26,370 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-06 18:50:26,371 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:50:26,766 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-06 18:50:26,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878670778] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:50:26,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:50:26,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17, 13] total 32 [2024-11-06 18:50:26,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406602076] [2024-11-06 18:50:26,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:50:26,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-06 18:50:26,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:26,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-06 18:50:26,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=904, Unknown=0, NotChecked=0, Total=992 [2024-11-06 18:50:26,770 INFO L87 Difference]: Start difference. First operand 234 states and 319 transitions. Second operand has 32 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 25 states have internal predecessors, (51), 6 states have call successors, (10), 2 states have call predecessors, (10), 6 states have return successors, (11), 9 states have call predecessors, (11), 5 states have call successors, (11) [2024-11-06 18:50:28,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:28,171 INFO L93 Difference]: Finished difference Result 453 states and 683 transitions. [2024-11-06 18:50:28,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-06 18:50:28,171 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 25 states have internal predecessors, (51), 6 states have call successors, (10), 2 states have call predecessors, (10), 6 states have return successors, (11), 9 states have call predecessors, (11), 5 states have call successors, (11) Word has length 48 [2024-11-06 18:50:28,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:28,174 INFO L225 Difference]: With dead ends: 453 [2024-11-06 18:50:28,175 INFO L226 Difference]: Without dead ends: 438 [2024-11-06 18:50:28,176 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 593 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=295, Invalid=3245, Unknown=0, NotChecked=0, Total=3540 [2024-11-06 18:50:28,177 INFO L432 NwaCegarLoop]: 170 mSDtfsCounter, 361 mSDsluCounter, 3047 mSDsCounter, 0 mSdLazyCounter, 967 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 3217 SdHoareTripleChecker+Invalid, 1064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:28,177 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 3217 Invalid, 1064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 967 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-06 18:50:28,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2024-11-06 18:50:28,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 257. [2024-11-06 18:50:28,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 203 states have (on average 1.2807881773399015) internal successors, (260), 212 states have internal predecessors, (260), 34 states have call successors, (34), 10 states have call predecessors, (34), 19 states have return successors, (69), 34 states have call predecessors, (69), 33 states have call successors, (69) [2024-11-06 18:50:28,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 363 transitions. [2024-11-06 18:50:28,219 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 363 transitions. Word has length 48 [2024-11-06 18:50:28,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:28,219 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 363 transitions. [2024-11-06 18:50:28,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 25 states have internal predecessors, (51), 6 states have call successors, (10), 2 states have call predecessors, (10), 6 states have return successors, (11), 9 states have call predecessors, (11), 5 states have call successors, (11) [2024-11-06 18:50:28,219 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 363 transitions. [2024-11-06 18:50:28,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-06 18:50:28,223 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:28,224 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:28,240 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-06 18:50:28,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-06 18:50:28,424 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:28,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:28,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1187408652, now seen corresponding path program 1 times [2024-11-06 18:50:28,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:28,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610007950] [2024-11-06 18:50:28,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:28,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:28,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:28,574 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:28,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:28,577 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:28,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:28,604 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-06 18:50:28,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:28,608 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-06 18:50:28,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:28,611 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-06 18:50:28,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:28,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610007950] [2024-11-06 18:50:28,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610007950] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:50:28,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068523773] [2024-11-06 18:50:28,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:28,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:28,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:50:28,614 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:50:28,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-06 18:50:28,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:28,686 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-06 18:50:28,688 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:50:28,859 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-06 18:50:28,859 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 18:50:28,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068523773] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:50:28,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 18:50:28,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [9] total 18 [2024-11-06 18:50:28,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722506262] [2024-11-06 18:50:28,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:50:28,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-06 18:50:28,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:28,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-06 18:50:28,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2024-11-06 18:50:28,861 INFO L87 Difference]: Start difference. First operand 257 states and 363 transitions. Second operand has 15 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 5 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-06 18:50:29,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:29,098 INFO L93 Difference]: Finished difference Result 487 states and 689 transitions. [2024-11-06 18:50:29,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-06 18:50:29,098 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 5 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 49 [2024-11-06 18:50:29,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:29,101 INFO L225 Difference]: With dead ends: 487 [2024-11-06 18:50:29,101 INFO L226 Difference]: Without dead ends: 363 [2024-11-06 18:50:29,102 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2024-11-06 18:50:29,104 INFO L432 NwaCegarLoop]: 150 mSDtfsCounter, 63 mSDsluCounter, 1669 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1819 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:29,104 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 1819 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 18:50:29,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2024-11-06 18:50:29,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 331. [2024-11-06 18:50:29,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 265 states have (on average 1.2830188679245282) internal successors, (340), 274 states have internal predecessors, (340), 42 states have call successors, (42), 14 states have call predecessors, (42), 23 states have return successors, (74), 42 states have call predecessors, (74), 41 states have call successors, (74) [2024-11-06 18:50:29,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 456 transitions. [2024-11-06 18:50:29,143 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 456 transitions. Word has length 49 [2024-11-06 18:50:29,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:29,144 INFO L471 AbstractCegarLoop]: Abstraction has 331 states and 456 transitions. [2024-11-06 18:50:29,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 5 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-06 18:50:29,144 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 456 transitions. [2024-11-06 18:50:29,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-06 18:50:29,147 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:29,147 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:29,163 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-06 18:50:29,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-06 18:50:29,348 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:29,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:29,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1377180783, now seen corresponding path program 1 times [2024-11-06 18:50:29,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:29,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321289922] [2024-11-06 18:50:29,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:29,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:29,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:29,400 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:29,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:29,403 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:29,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:29,434 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-06 18:50:29,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:29,438 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-06 18:50:29,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:29,441 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-06 18:50:29,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:29,474 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-06 18:50:29,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:29,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321289922] [2024-11-06 18:50:29,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321289922] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:50:29,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670471881] [2024-11-06 18:50:29,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:29,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:29,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:50:29,478 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:50:29,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-06 18:50:29,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:29,531 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-06 18:50:29,533 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:50:29,632 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-06 18:50:29,633 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:50:29,875 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-06 18:50:29,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670471881] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:50:29,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:50:29,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 10] total 21 [2024-11-06 18:50:29,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92737610] [2024-11-06 18:50:29,876 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:50:29,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-06 18:50:29,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:29,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-06 18:50:29,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2024-11-06 18:50:29,878 INFO L87 Difference]: Start difference. First operand 331 states and 456 transitions. Second operand has 21 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 18 states have internal predecessors, (58), 5 states have call successors, (10), 2 states have call predecessors, (10), 6 states have return successors, (11), 7 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-06 18:50:30,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:30,395 INFO L93 Difference]: Finished difference Result 496 states and 716 transitions. [2024-11-06 18:50:30,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-06 18:50:30,395 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 18 states have internal predecessors, (58), 5 states have call successors, (10), 2 states have call predecessors, (10), 6 states have return successors, (11), 7 states have call predecessors, (11), 4 states have call successors, (11) Word has length 50 [2024-11-06 18:50:30,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:30,398 INFO L225 Difference]: With dead ends: 496 [2024-11-06 18:50:30,398 INFO L226 Difference]: Without dead ends: 471 [2024-11-06 18:50:30,400 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=122, Invalid=808, Unknown=0, NotChecked=0, Total=930 [2024-11-06 18:50:30,400 INFO L432 NwaCegarLoop]: 137 mSDtfsCounter, 132 mSDsluCounter, 1937 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 2074 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:30,400 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 2074 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-06 18:50:30,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2024-11-06 18:50:30,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 343. [2024-11-06 18:50:30,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 272 states have (on average 1.2683823529411764) internal successors, (345), 283 states have internal predecessors, (345), 45 states have call successors, (45), 14 states have call predecessors, (45), 25 states have return successors, (92), 45 states have call predecessors, (92), 44 states have call successors, (92) [2024-11-06 18:50:30,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 482 transitions. [2024-11-06 18:50:30,455 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 482 transitions. Word has length 50 [2024-11-06 18:50:30,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:30,455 INFO L471 AbstractCegarLoop]: Abstraction has 343 states and 482 transitions. [2024-11-06 18:50:30,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 18 states have internal predecessors, (58), 5 states have call successors, (10), 2 states have call predecessors, (10), 6 states have return successors, (11), 7 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-06 18:50:30,455 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 482 transitions. [2024-11-06 18:50:30,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-06 18:50:30,457 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:30,457 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:30,474 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-06 18:50:30,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:30,657 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:30,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:30,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1213879945, now seen corresponding path program 1 times [2024-11-06 18:50:30,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:30,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961612760] [2024-11-06 18:50:30,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:30,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:30,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:30,674 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:30,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:30,680 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:30,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:30,693 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-06 18:50:30,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:30,700 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-06 18:50:30,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:30,702 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-06 18:50:30,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:30,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961612760] [2024-11-06 18:50:30,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961612760] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:50:30,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562302304] [2024-11-06 18:50:30,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:30,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:30,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:50:30,708 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:50:30,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-06 18:50:30,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:30,766 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-06 18:50:30,767 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:50:30,778 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-06 18:50:30,780 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 18:50:30,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562302304] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:50:30,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 18:50:30,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2024-11-06 18:50:30,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075869025] [2024-11-06 18:50:30,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:50:30,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:50:30,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:30,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:50:30,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 18:50:30,782 INFO L87 Difference]: Start difference. First operand 343 states and 482 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:50:30,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:30,825 INFO L93 Difference]: Finished difference Result 688 states and 971 transitions. [2024-11-06 18:50:30,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:50:30,826 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 52 [2024-11-06 18:50:30,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:30,830 INFO L225 Difference]: With dead ends: 688 [2024-11-06 18:50:30,830 INFO L226 Difference]: Without dead ends: 348 [2024-11-06 18:50:30,833 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 18:50:30,835 INFO L432 NwaCegarLoop]: 100 mSDtfsCounter, 6 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:30,835 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 183 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 18:50:30,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2024-11-06 18:50:30,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 346. [2024-11-06 18:50:30,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 275 states have (on average 1.269090909090909) internal successors, (349), 286 states have internal predecessors, (349), 45 states have call successors, (45), 14 states have call predecessors, (45), 25 states have return successors, (92), 45 states have call predecessors, (92), 44 states have call successors, (92) [2024-11-06 18:50:30,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 486 transitions. [2024-11-06 18:50:30,865 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 486 transitions. Word has length 52 [2024-11-06 18:50:30,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:30,865 INFO L471 AbstractCegarLoop]: Abstraction has 346 states and 486 transitions. [2024-11-06 18:50:30,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:50:30,865 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 486 transitions. [2024-11-06 18:50:30,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-06 18:50:30,867 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:30,868 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:30,885 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-06 18:50:31,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:31,069 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:31,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:31,069 INFO L85 PathProgramCache]: Analyzing trace with hash 388201992, now seen corresponding path program 1 times [2024-11-06 18:50:31,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:31,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487968960] [2024-11-06 18:50:31,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:31,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:31,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:31,175 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:31,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:31,178 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:31,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:31,180 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-06 18:50:31,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:31,223 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-06 18:50:31,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:31,230 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-06 18:50:31,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:31,232 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-06 18:50:31,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:31,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487968960] [2024-11-06 18:50:31,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487968960] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:50:31,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:50:31,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-06 18:50:31,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145731061] [2024-11-06 18:50:31,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:50:31,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-06 18:50:31,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:31,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-06 18:50:31,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-06 18:50:31,233 INFO L87 Difference]: Start difference. First operand 346 states and 486 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 7 states have internal predecessors, (37), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-06 18:50:31,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:31,299 INFO L93 Difference]: Finished difference Result 368 states and 507 transitions. [2024-11-06 18:50:31,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-06 18:50:31,299 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 7 states have internal predecessors, (37), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 53 [2024-11-06 18:50:31,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:31,301 INFO L225 Difference]: With dead ends: 368 [2024-11-06 18:50:31,301 INFO L226 Difference]: Without dead ends: 312 [2024-11-06 18:50:31,302 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-06 18:50:31,302 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 10 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 732 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:31,303 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 732 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 18:50:31,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2024-11-06 18:50:31,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 307. [2024-11-06 18:50:31,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 243 states have (on average 1.2592592592592593) internal successors, (306), 253 states have internal predecessors, (306), 40 states have call successors, (40), 13 states have call predecessors, (40), 23 states have return successors, (83), 40 states have call predecessors, (83), 39 states have call successors, (83) [2024-11-06 18:50:31,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 429 transitions. [2024-11-06 18:50:31,325 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 429 transitions. Word has length 53 [2024-11-06 18:50:31,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:31,325 INFO L471 AbstractCegarLoop]: Abstraction has 307 states and 429 transitions. [2024-11-06 18:50:31,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 7 states have internal predecessors, (37), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-06 18:50:31,326 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 429 transitions. [2024-11-06 18:50:31,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-06 18:50:31,327 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:31,327 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:31,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-06 18:50:31,327 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:31,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:31,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1758994133, now seen corresponding path program 1 times [2024-11-06 18:50:31,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:31,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067814620] [2024-11-06 18:50:31,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:31,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:31,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:31,344 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:31,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:31,346 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:31,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:31,356 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-06 18:50:31,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:31,358 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-06 18:50:31,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:31,359 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-06 18:50:31,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:31,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067814620] [2024-11-06 18:50:31,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067814620] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:50:31,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323207702] [2024-11-06 18:50:31,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:31,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:31,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:50:31,362 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:50:31,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-06 18:50:31,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:31,417 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-06 18:50:31,418 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:50:31,427 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-06 18:50:31,427 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 18:50:31,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323207702] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:50:31,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 18:50:31,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 3 [2024-11-06 18:50:31,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562781426] [2024-11-06 18:50:31,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:50:31,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:50:31,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:31,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:50:31,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 18:50:31,428 INFO L87 Difference]: Start difference. First operand 307 states and 429 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:50:31,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:31,471 INFO L93 Difference]: Finished difference Result 617 states and 866 transitions. [2024-11-06 18:50:31,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:50:31,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 53 [2024-11-06 18:50:31,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:31,474 INFO L225 Difference]: With dead ends: 617 [2024-11-06 18:50:31,474 INFO L226 Difference]: Without dead ends: 313 [2024-11-06 18:50:31,476 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 18:50:31,476 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 5 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:31,477 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 184 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 18:50:31,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2024-11-06 18:50:31,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 309. [2024-11-06 18:50:31,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 245 states have (on average 1.2571428571428571) internal successors, (308), 255 states have internal predecessors, (308), 40 states have call successors, (40), 13 states have call predecessors, (40), 23 states have return successors, (83), 40 states have call predecessors, (83), 39 states have call successors, (83) [2024-11-06 18:50:31,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 431 transitions. [2024-11-06 18:50:31,497 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 431 transitions. Word has length 53 [2024-11-06 18:50:31,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:31,497 INFO L471 AbstractCegarLoop]: Abstraction has 309 states and 431 transitions. [2024-11-06 18:50:31,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:50:31,497 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 431 transitions. [2024-11-06 18:50:31,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-06 18:50:31,498 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:31,498 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:31,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-06 18:50:31,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:31,699 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:31,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:31,699 INFO L85 PathProgramCache]: Analyzing trace with hash 418107322, now seen corresponding path program 1 times [2024-11-06 18:50:31,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:31,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836005005] [2024-11-06 18:50:31,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:31,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:31,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:31,936 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:31,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:31,940 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:31,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:32,051 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-06 18:50:32,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:32,090 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-06 18:50:32,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:32,092 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 18:50:32,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:32,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836005005] [2024-11-06 18:50:32,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836005005] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:50:32,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784667363] [2024-11-06 18:50:32,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:32,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:32,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:50:32,095 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:50:32,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-06 18:50:32,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:32,184 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-06 18:50:32,186 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:50:32,286 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-06 18:50:32,287 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 18:50:32,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784667363] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:50:32,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 18:50:32,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15] total 20 [2024-11-06 18:50:32,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240786293] [2024-11-06 18:50:32,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:50:32,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-06 18:50:32,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:32,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-06 18:50:32,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=341, Unknown=0, NotChecked=0, Total=380 [2024-11-06 18:50:32,288 INFO L87 Difference]: Start difference. First operand 309 states and 431 transitions. Second operand has 9 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:50:32,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:32,405 INFO L93 Difference]: Finished difference Result 498 states and 692 transitions. [2024-11-06 18:50:32,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-06 18:50:32,405 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 54 [2024-11-06 18:50:32,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:32,407 INFO L225 Difference]: With dead ends: 498 [2024-11-06 18:50:32,408 INFO L226 Difference]: Without dead ends: 320 [2024-11-06 18:50:32,409 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2024-11-06 18:50:32,409 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 59 mSDsluCounter, 715 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 820 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:32,409 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 820 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:50:32,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2024-11-06 18:50:32,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 309. [2024-11-06 18:50:32,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 245 states have (on average 1.2489795918367348) internal successors, (306), 255 states have internal predecessors, (306), 40 states have call successors, (40), 13 states have call predecessors, (40), 23 states have return successors, (83), 40 states have call predecessors, (83), 39 states have call successors, (83) [2024-11-06 18:50:32,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 429 transitions. [2024-11-06 18:50:32,441 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 429 transitions. Word has length 54 [2024-11-06 18:50:32,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:32,441 INFO L471 AbstractCegarLoop]: Abstraction has 309 states and 429 transitions. [2024-11-06 18:50:32,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:50:32,441 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 429 transitions. [2024-11-06 18:50:32,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-06 18:50:32,443 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:32,443 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:32,460 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-06 18:50:32,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-06 18:50:32,647 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:32,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:32,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1317589488, now seen corresponding path program 1 times [2024-11-06 18:50:32,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:32,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496514603] [2024-11-06 18:50:32,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:32,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:32,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:32,717 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:32,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:32,719 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:32,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:32,739 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-06 18:50:32,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:32,746 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-06 18:50:32,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:32,748 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-06 18:50:32,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:32,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496514603] [2024-11-06 18:50:32,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496514603] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:50:32,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737565544] [2024-11-06 18:50:32,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:32,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:32,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:50:32,750 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:50:32,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-06 18:50:32,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:32,809 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-06 18:50:32,811 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:50:32,834 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-06 18:50:32,835 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:50:32,992 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-06 18:50:32,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737565544] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:50:32,992 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:50:32,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 15 [2024-11-06 18:50:32,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130015359] [2024-11-06 18:50:32,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:50:32,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-06 18:50:32,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:32,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-06 18:50:32,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2024-11-06 18:50:32,993 INFO L87 Difference]: Start difference. First operand 309 states and 429 transitions. Second operand has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 11 states have internal predecessors, (47), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-06 18:50:33,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:33,173 INFO L93 Difference]: Finished difference Result 448 states and 610 transitions. [2024-11-06 18:50:33,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-06 18:50:33,174 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 11 states have internal predecessors, (47), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) Word has length 54 [2024-11-06 18:50:33,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:33,176 INFO L225 Difference]: With dead ends: 448 [2024-11-06 18:50:33,176 INFO L226 Difference]: Without dead ends: 367 [2024-11-06 18:50:33,177 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 108 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2024-11-06 18:50:33,177 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 93 mSDsluCounter, 1158 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:33,177 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 1266 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:50:33,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2024-11-06 18:50:33,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 347. [2024-11-06 18:50:33,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 277 states have (on average 1.259927797833935) internal successors, (349), 289 states have internal predecessors, (349), 43 states have call successors, (43), 14 states have call predecessors, (43), 26 states have return successors, (84), 43 states have call predecessors, (84), 42 states have call successors, (84) [2024-11-06 18:50:33,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 476 transitions. [2024-11-06 18:50:33,202 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 476 transitions. Word has length 54 [2024-11-06 18:50:33,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:33,203 INFO L471 AbstractCegarLoop]: Abstraction has 347 states and 476 transitions. [2024-11-06 18:50:33,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 11 states have internal predecessors, (47), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-06 18:50:33,203 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 476 transitions. [2024-11-06 18:50:33,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-06 18:50:33,204 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:33,204 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:33,220 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-06 18:50:33,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-06 18:50:33,405 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:33,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:33,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1956309454, now seen corresponding path program 2 times [2024-11-06 18:50:33,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:33,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19036252] [2024-11-06 18:50:33,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:33,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:33,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:33,523 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:33,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:33,525 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:33,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:33,548 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-06 18:50:33,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:33,554 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-06 18:50:33,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:33,556 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-06 18:50:33,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:33,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19036252] [2024-11-06 18:50:33,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19036252] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:50:33,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649976415] [2024-11-06 18:50:33,556 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 18:50:33,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:33,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:50:33,558 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:50:33,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-06 18:50:33,642 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 18:50:33,642 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:50:33,643 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-06 18:50:33,644 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:50:33,681 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-06 18:50:33,681 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:50:33,810 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-06 18:50:33,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649976415] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:50:33,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:50:33,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-11-06 18:50:33,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194255065] [2024-11-06 18:50:33,812 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:50:33,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-06 18:50:33,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:33,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-06 18:50:33,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2024-11-06 18:50:33,813 INFO L87 Difference]: Start difference. First operand 347 states and 476 transitions. Second operand has 16 states, 16 states have (on average 3.0) internal successors, (48), 12 states have internal predecessors, (48), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-06 18:50:34,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:34,007 INFO L93 Difference]: Finished difference Result 580 states and 799 transitions. [2024-11-06 18:50:34,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-06 18:50:34,008 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 12 states have internal predecessors, (48), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) Word has length 54 [2024-11-06 18:50:34,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:34,012 INFO L225 Difference]: With dead ends: 580 [2024-11-06 18:50:34,012 INFO L226 Difference]: Without dead ends: 394 [2024-11-06 18:50:34,013 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 108 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2024-11-06 18:50:34,014 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 133 mSDsluCounter, 1133 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 1251 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:34,014 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 1251 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:50:34,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2024-11-06 18:50:34,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 347. [2024-11-06 18:50:34,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 277 states have (on average 1.2527075812274369) internal successors, (347), 289 states have internal predecessors, (347), 43 states have call successors, (43), 14 states have call predecessors, (43), 26 states have return successors, (84), 43 states have call predecessors, (84), 42 states have call successors, (84) [2024-11-06 18:50:34,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 474 transitions. [2024-11-06 18:50:34,050 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 474 transitions. Word has length 54 [2024-11-06 18:50:34,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:34,050 INFO L471 AbstractCegarLoop]: Abstraction has 347 states and 474 transitions. [2024-11-06 18:50:34,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 12 states have internal predecessors, (48), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-06 18:50:34,050 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 474 transitions. [2024-11-06 18:50:34,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-06 18:50:34,052 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:34,052 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:34,069 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-06 18:50:34,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-06 18:50:34,253 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:34,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:34,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1591446259, now seen corresponding path program 1 times [2024-11-06 18:50:34,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:34,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658603591] [2024-11-06 18:50:34,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:34,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:34,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:34,341 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:34,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:34,343 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:34,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:34,344 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-06 18:50:34,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:34,349 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-06 18:50:34,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:34,387 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-06 18:50:34,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:34,425 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-06 18:50:34,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:34,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658603591] [2024-11-06 18:50:34,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658603591] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:50:34,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566387489] [2024-11-06 18:50:34,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:34,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:34,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:50:34,427 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:50:34,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-06 18:50:34,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:34,504 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-06 18:50:34,505 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:50:34,536 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-06 18:50:34,536 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:50:34,806 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-06 18:50:34,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566387489] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:50:34,807 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:50:34,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-06 18:50:34,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757612902] [2024-11-06 18:50:34,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:50:34,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-06 18:50:34,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:34,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-06 18:50:34,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=540, Unknown=0, NotChecked=0, Total=600 [2024-11-06 18:50:34,808 INFO L87 Difference]: Start difference. First operand 347 states and 474 transitions. Second operand has 25 states, 23 states have (on average 2.347826086956522) internal successors, (54), 21 states have internal predecessors, (54), 4 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-06 18:50:35,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:35,385 INFO L93 Difference]: Finished difference Result 413 states and 580 transitions. [2024-11-06 18:50:35,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-06 18:50:35,385 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 2.347826086956522) internal successors, (54), 21 states have internal predecessors, (54), 4 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 55 [2024-11-06 18:50:35,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:35,388 INFO L225 Difference]: With dead ends: 413 [2024-11-06 18:50:35,388 INFO L226 Difference]: Without dead ends: 381 [2024-11-06 18:50:35,389 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=137, Invalid=1269, Unknown=0, NotChecked=0, Total=1406 [2024-11-06 18:50:35,389 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 165 mSDsluCounter, 2137 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 2269 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:35,390 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 2269 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 643 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-06 18:50:35,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2024-11-06 18:50:35,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 333. [2024-11-06 18:50:35,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 267 states have (on average 1.2621722846441947) internal successors, (337), 278 states have internal predecessors, (337), 41 states have call successors, (41), 12 states have call predecessors, (41), 24 states have return successors, (80), 42 states have call predecessors, (80), 40 states have call successors, (80) [2024-11-06 18:50:35,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 458 transitions. [2024-11-06 18:50:35,414 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 458 transitions. Word has length 55 [2024-11-06 18:50:35,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:35,414 INFO L471 AbstractCegarLoop]: Abstraction has 333 states and 458 transitions. [2024-11-06 18:50:35,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 2.347826086956522) internal successors, (54), 21 states have internal predecessors, (54), 4 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-06 18:50:35,415 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 458 transitions. [2024-11-06 18:50:35,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-06 18:50:35,416 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:35,416 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:35,434 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-06 18:50:35,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:35,617 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:35,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:35,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1131087777, now seen corresponding path program 2 times [2024-11-06 18:50:35,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:35,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232600055] [2024-11-06 18:50:35,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:35,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:35,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:35,713 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:35,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:35,715 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:35,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:35,718 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-06 18:50:35,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:35,720 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-06 18:50:35,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:35,747 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-06 18:50:35,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:35,794 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-06 18:50:35,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:35,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232600055] [2024-11-06 18:50:35,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232600055] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:50:35,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387366216] [2024-11-06 18:50:35,794 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 18:50:35,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:35,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:50:35,797 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:50:35,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-06 18:50:35,873 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 18:50:35,873 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:50:35,875 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-06 18:50:35,877 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:50:36,603 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-06 18:50:36,603 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:50:37,110 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-06 18:50:37,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387366216] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:50:37,110 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:50:37,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 18, 13] total 36 [2024-11-06 18:50:37,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722279697] [2024-11-06 18:50:37,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:50:37,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-06 18:50:37,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:37,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-06 18:50:37,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=1167, Unknown=0, NotChecked=0, Total=1260 [2024-11-06 18:50:37,112 INFO L87 Difference]: Start difference. First operand 333 states and 458 transitions. Second operand has 36 states, 33 states have (on average 1.9696969696969697) internal successors, (65), 29 states have internal predecessors, (65), 6 states have call successors, (10), 2 states have call predecessors, (10), 7 states have return successors, (11), 9 states have call predecessors, (11), 5 states have call successors, (11) [2024-11-06 18:50:38,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:38,210 INFO L93 Difference]: Finished difference Result 451 states and 683 transitions. [2024-11-06 18:50:38,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-06 18:50:38,210 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 33 states have (on average 1.9696969696969697) internal successors, (65), 29 states have internal predecessors, (65), 6 states have call successors, (10), 2 states have call predecessors, (10), 7 states have return successors, (11), 9 states have call predecessors, (11), 5 states have call successors, (11) Word has length 55 [2024-11-06 18:50:38,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:38,213 INFO L225 Difference]: With dead ends: 451 [2024-11-06 18:50:38,213 INFO L226 Difference]: Without dead ends: 411 [2024-11-06 18:50:38,214 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=185, Invalid=2167, Unknown=0, NotChecked=0, Total=2352 [2024-11-06 18:50:38,214 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 172 mSDsluCounter, 3128 mSDsCounter, 0 mSdLazyCounter, 1138 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 3266 SdHoareTripleChecker+Invalid, 1160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:38,214 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 3266 Invalid, 1160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1138 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-06 18:50:38,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2024-11-06 18:50:38,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 325. [2024-11-06 18:50:38,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 260 states have (on average 1.2692307692307692) internal successors, (330), 273 states have internal predecessors, (330), 40 states have call successors, (40), 10 states have call predecessors, (40), 24 states have return successors, (79), 41 states have call predecessors, (79), 39 states have call successors, (79) [2024-11-06 18:50:38,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 449 transitions. [2024-11-06 18:50:38,243 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 449 transitions. Word has length 55 [2024-11-06 18:50:38,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:38,244 INFO L471 AbstractCegarLoop]: Abstraction has 325 states and 449 transitions. [2024-11-06 18:50:38,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 33 states have (on average 1.9696969696969697) internal successors, (65), 29 states have internal predecessors, (65), 6 states have call successors, (10), 2 states have call predecessors, (10), 7 states have return successors, (11), 9 states have call predecessors, (11), 5 states have call successors, (11) [2024-11-06 18:50:38,244 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 449 transitions. [2024-11-06 18:50:38,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-06 18:50:38,245 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:38,245 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:38,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-06 18:50:38,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:38,445 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:38,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:38,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1641792537, now seen corresponding path program 1 times [2024-11-06 18:50:38,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:38,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325884457] [2024-11-06 18:50:38,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:38,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:38,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-06 18:50:38,480 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-06 18:50:38,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-06 18:50:38,535 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-06 18:50:38,535 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-06 18:50:38,536 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-06 18:50:38,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-06 18:50:38,540 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:38,571 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-06 18:50:38,574 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 06:50:38 BoogieIcfgContainer [2024-11-06 18:50:38,574 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-06 18:50:38,574 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-06 18:50:38,575 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-06 18:50:38,575 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-06 18:50:38,575 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:50:17" (3/4) ... [2024-11-06 18:50:38,577 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-06 18:50:38,578 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-06 18:50:38,579 INFO L158 Benchmark]: Toolchain (without parser) took 21567.30ms. Allocated memory was 117.4MB in the beginning and 201.3MB in the end (delta: 83.9MB). Free memory was 91.8MB in the beginning and 63.5MB in the end (delta: 28.2MB). Peak memory consumption was 109.3MB. Max. memory is 16.1GB. [2024-11-06 18:50:38,579 INFO L158 Benchmark]: CDTParser took 0.83ms. Allocated memory is still 117.4MB. Free memory is still 81.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-06 18:50:38,579 INFO L158 Benchmark]: CACSL2BoogieTranslator took 246.84ms. Allocated memory is still 117.4MB. Free memory was 91.8MB in the beginning and 78.4MB in the end (delta: 13.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-06 18:50:38,579 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.89ms. Allocated memory is still 117.4MB. Free memory was 78.4MB in the beginning and 77.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-06 18:50:38,579 INFO L158 Benchmark]: Boogie Preprocessor took 41.69ms. Allocated memory is still 117.4MB. Free memory was 77.2MB in the beginning and 75.6MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-06 18:50:38,580 INFO L158 Benchmark]: RCFGBuilder took 408.23ms. Allocated memory is still 117.4MB. Free memory was 75.4MB in the beginning and 57.2MB in the end (delta: 18.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-06 18:50:38,580 INFO L158 Benchmark]: TraceAbstraction took 20813.38ms. Allocated memory was 117.4MB in the beginning and 201.3MB in the end (delta: 83.9MB). Free memory was 56.6MB in the beginning and 63.6MB in the end (delta: -7.0MB). Peak memory consumption was 75.7MB. Max. memory is 16.1GB. [2024-11-06 18:50:38,580 INFO L158 Benchmark]: Witness Printer took 3.69ms. Allocated memory is still 201.3MB. Free memory was 63.6MB in the beginning and 63.5MB in the end (delta: 74.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-06 18:50:38,581 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.83ms. Allocated memory is still 117.4MB. Free memory is still 81.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 246.84ms. Allocated memory is still 117.4MB. Free memory was 91.8MB in the beginning and 78.4MB in the end (delta: 13.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.89ms. Allocated memory is still 117.4MB. Free memory was 78.4MB in the beginning and 77.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 41.69ms. Allocated memory is still 117.4MB. Free memory was 77.2MB in the beginning and 75.6MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 408.23ms. Allocated memory is still 117.4MB. Free memory was 75.4MB in the beginning and 57.2MB in the end (delta: 18.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 20813.38ms. Allocated memory was 117.4MB in the beginning and 201.3MB in the end (delta: 83.9MB). Free memory was 56.6MB in the beginning and 63.6MB in the end (delta: -7.0MB). Peak memory consumption was 75.7MB. Max. memory is 16.1GB. * Witness Printer took 3.69ms. Allocated memory is still 201.3MB. Free memory was 63.6MB in the beginning and 63.5MB in the end (delta: 74.9kB). 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: 17]: 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 bitwiseOr at line 110, overapproximation of bitwiseAnd at line 76. Possible FailurePath: [L226] unsigned int a ; [L227] unsigned int ma = __VERIFIER_nondet_uint(); [L228] signed char ea = __VERIFIER_nondet_char(); [L229] unsigned int b ; [L230] unsigned int mb = __VERIFIER_nondet_uint(); [L231] signed char eb = __VERIFIER_nondet_char(); [L232] unsigned int r_add1 ; [L233] unsigned int r_add2 ; [L234] unsigned int zero ; [L235] int tmp ; [L236] int tmp___0 ; [L237] int __retres14 ; VAL [ea=-127, eb=127] [L241] CALL, EXPR base2flt(0, 0) VAL [\old(e)=0, \old(m)=0] [L25] unsigned int res ; [L26] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=0, e=0, m=0] [L29] COND TRUE ! m [L30] __retres4 = 0U VAL [\old(e)=0, \old(m)=0, __retres4=0, e=0] [L80] return (__retres4); VAL [\old(e)=0, \old(m)=0, \result=0, e=0] [L241] RET, EXPR base2flt(0, 0) VAL [ea=-127, eb=127] [L241] zero = base2flt(0, 0) [L242] CALL, EXPR base2flt(ma, ea) VAL [\old(e)=-127, \old(m)=4311744512] [L25] unsigned int res ; [L26] unsigned int __retres4 ; VAL [\old(e)=-127, \old(m)=4311744512, e=-127, m=4311744512] [L29] COND FALSE !(! m) VAL [\old(e)=-127, \old(m)=4311744512, e=-127, m=4311744512] [L35] COND FALSE !(m < 1U << 24U) VAL [\old(e)=-127, \old(m)=4311744512, e=-127, m=4311744512] [L57] COND TRUE 1 VAL [\old(e)=-127, \old(m)=4311744512, e=-127, m=4311744512] [L59] COND FALSE !(m >= 1U << 25U) VAL [\old(e)=-127, \old(m)=4311744512, e=-127, m=4311744512] [L76] EXPR m & ~ (1U << 24U) VAL [\old(e)=-127, \old(m)=4311744512, e=-127] [L76] m = m & ~ (1U << 24U) [L77] EXPR m | ((unsigned int )(e + 128) << 24U) VAL [\old(e)=-127, \old(m)=4311744512] [L77] res = m | ((unsigned int )(e + 128) << 24U) [L78] __retres4 = res VAL [\old(e)=-127, \old(m)=4311744512, __retres4=16777216] [L80] return (__retres4); VAL [\old(e)=-127, \old(m)=4311744512, \result=16777216] [L242] RET, EXPR base2flt(ma, ea) VAL [ea=-127, eb=127, ma=4311744512] [L242] a = base2flt(ma, ea) [L243] CALL, EXPR base2flt(mb, eb) VAL [\old(e)=127, \old(m)=33554432] [L25] unsigned int res ; [L26] unsigned int __retres4 ; VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L29] COND FALSE !(! m) VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L35] COND FALSE !(m < 1U << 24U) VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L57] COND TRUE 1 VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L59] COND TRUE m >= 1U << 25U VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L64] COND TRUE e >= 127 [L65] __retres4 = 4294967295U VAL [\old(e)=127, \old(m)=33554432, __retres4=4294967295, m=33554432] [L80] return (__retres4); VAL [\old(e)=127, \old(m)=33554432, \result=4294967295, m=33554432] [L243] RET, EXPR base2flt(mb, eb) VAL [a=16777216, ea=-127, eb=127, ma=4311744512, mb=33554432] [L243] b = base2flt(mb, eb) [L244] CALL addflt(a, b) VAL [\old(a)=16777216, \old(b)=4294967295] [L84] unsigned int res ; [L85] unsigned int ma ; [L86] unsigned int mb ; [L87] unsigned int delta ; [L88] int ea ; [L89] int eb ; [L90] unsigned int tmp ; [L91] unsigned int __retres10 ; VAL [\old(a)=16777216, \old(b)=4294967295, a=16777216, b=4294967295] [L94] COND TRUE a < b [L95] tmp = a [L96] a = b [L97] b = tmp VAL [\old(a)=16777216, \old(b)=4294967295, a=4294967295, b=16777216] [L101] COND FALSE !(! b) [L108] ma = a & ((1U << 24U) - 1U) [L109] ea = (int )(a >> 24U) - 128 VAL [\old(a)=16777216, \old(b)=4294967295, a=4294967295, b=16777216, ea=127, ma=16777215] [L110] EXPR ma | (1U << 24U) VAL [\old(a)=16777216, \old(b)=4294967295, a=4294967295, b=16777216, ea=127] [L110] ma = ma | (1U << 24U) [L111] mb = b & ((1U << 24U) - 1U) [L112] eb = (int )(b >> 24U) - 128 VAL [\old(a)=16777216, \old(b)=4294967295, a=4294967295, ea=127, eb=-127, ma=16777216, mb=0] [L113] EXPR mb | (1U << 24U) VAL [\old(a)=16777216, \old(b)=4294967295, a=4294967295, ea=127, eb=-127, ma=16777216] [L113] mb = mb | (1U << 24U) [L114] CALL __VERIFIER_assert(ea >= eb) VAL [\old(cond)=1] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1] [L114] RET __VERIFIER_assert(ea >= eb) VAL [\old(a)=16777216, \old(b)=4294967295, a=4294967295, ea=127, eb=-127, ma=16777216, mb=16777216] [L115] delta = ea - eb VAL [\old(a)=16777216, \old(b)=4294967295, a=4294967295, delta=254, ea=127, ma=16777216, mb=16777216] [L116] CALL __VERIFIER_assert(delta < sizeof(mb) * 8) VAL [\old(cond)=0] [L16] COND TRUE !(cond) VAL [\old(cond)=0] [L17] reach_error() VAL [\old(cond)=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 78 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 20.7s, OverallIterations: 21, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 7.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2002 SdHoareTripleChecker+Valid, 4.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1844 mSDsluCounter, 29180 SdHoareTripleChecker+Invalid, 3.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 26746 mSDsCounter, 296 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6151 IncrementalHoareTripleChecker+Invalid, 6447 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 296 mSolverCounterUnsat, 2434 mSDtfsCounter, 6151 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1612 GetRequests, 1193 SyntacticMatches, 5 SemanticMatches, 414 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2056 ImplicationChecksByTransitivity, 6.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=347occurred in iteration=17, InterpolantAutomatonStates: 313, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 20 MinimizatonAttempts, 849 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 8.1s InterpolantComputationTime, 1710 NumberOfCodeBlocks, 1692 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 2053 ConstructedInterpolants, 1 QuantifiedInterpolants, 4816 SizeOfPredicates, 21 NumberOfNonLiveVariables, 2085 ConjunctsInSsa, 299 ConjunctsInUnsatCore, 43 InterpolantComputations, 11 PerfectInterpolantSequences, 708/848 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-06 18:50:38,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/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-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 c7e459611ed6ff9d4c49aa04980ca7f1d5aaaf97e8fc0116c264955df4ed453a --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-06 18:50:40,732 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 18:50:40,814 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-06 18:50:40,819 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 18:50:40,820 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 18:50:40,845 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 18:50:40,846 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 18:50:40,846 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 18:50:40,848 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 18:50:40,848 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 18:50:40,849 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 18:50:40,849 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 18:50:40,849 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 18:50:40,849 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 18:50:40,850 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 18:50:40,850 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 18:50:40,850 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 18:50:40,850 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-06 18:50:40,851 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-06 18:50:40,851 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 18:50:40,851 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 18:50:40,851 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 18:50:40,851 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 18:50:40,851 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-06 18:50:40,851 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-06 18:50:40,851 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 18:50:40,851 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-06 18:50:40,852 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-06 18:50:40,852 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 18:50:40,852 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 18:50:40,852 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 18:50:40,852 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 18:50:40,852 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 18:50:40,852 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 18:50:40,852 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 18:50:40,853 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 18:50:40,853 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 18:50:40,853 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 18:50:40,853 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-06 18:50:40,854 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-06 18:50:40,854 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 18:50:40,854 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 18:50:40,854 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 18:50:40,854 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 18:50:40,854 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-jdk21/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 -> c7e459611ed6ff9d4c49aa04980ca7f1d5aaaf97e8fc0116c264955df4ed453a [2024-11-06 18:50:41,103 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 18:50:41,110 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 18:50:41,111 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 18:50:41,112 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 18:50:41,113 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 18:50:41,113 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2024-11-06 18:50:42,362 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 18:50:42,604 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 18:50:42,606 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2024-11-06 18:50:42,615 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7d683acfc/0bf599a33c324300a08d3086958dd789/FLAG3b4e56061 [2024-11-06 18:50:42,631 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7d683acfc/0bf599a33c324300a08d3086958dd789 [2024-11-06 18:50:42,634 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 18:50:42,637 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-06 18:50:42,638 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 18:50:42,639 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 18:50:42,642 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 18:50:42,643 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:50:42" (1/1) ... [2024-11-06 18:50:42,644 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e96604e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:50:42, skipping insertion in model container [2024-11-06 18:50:42,645 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:50:42" (1/1) ... [2024-11-06 18:50:42,664 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 18:50:42,791 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c[730,743] [2024-11-06 18:50:42,845 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 18:50:42,857 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 18:50:42,864 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c[730,743] [2024-11-06 18:50:42,886 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 18:50:42,899 INFO L204 MainTranslator]: Completed translation [2024-11-06 18:50:42,900 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:50:42 WrapperNode [2024-11-06 18:50:42,901 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 18:50:42,902 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 18:50:42,902 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 18:50:42,902 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 18:50:42,910 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:50:42" (1/1) ... [2024-11-06 18:50:42,918 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:50:42" (1/1) ... [2024-11-06 18:50:42,935 INFO L138 Inliner]: procedures = 17, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2024-11-06 18:50:42,936 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 18:50:42,937 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 18:50:42,937 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 18:50:42,938 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 18:50:42,945 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:50:42" (1/1) ... [2024-11-06 18:50:42,945 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:50:42" (1/1) ... [2024-11-06 18:50:42,952 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:50:42" (1/1) ... [2024-11-06 18:50:42,968 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-06 18:50:42,968 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:50:42" (1/1) ... [2024-11-06 18:50:42,968 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:50:42" (1/1) ... [2024-11-06 18:50:42,981 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:50:42" (1/1) ... [2024-11-06 18:50:42,987 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:50:42" (1/1) ... [2024-11-06 18:50:42,988 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:50:42" (1/1) ... [2024-11-06 18:50:42,989 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:50:42" (1/1) ... [2024-11-06 18:50:42,991 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 18:50:42,993 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 18:50:42,993 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 18:50:42,993 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 18:50:42,994 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:50:42" (1/1) ... [2024-11-06 18:50:43,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 18:50:43,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:50:43,028 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-06 18:50:43,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-06 18:50:43,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 18:50:43,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-06 18:50:43,054 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2024-11-06 18:50:43,054 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2024-11-06 18:50:43,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 18:50:43,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 18:50:43,054 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2024-11-06 18:50:43,054 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2024-11-06 18:50:43,054 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-06 18:50:43,055 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-06 18:50:43,130 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 18:50:43,132 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 18:50:43,323 INFO L? ?]: Removed 34 outVars from TransFormulas that were not future-live. [2024-11-06 18:50:43,323 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 18:50:43,335 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 18:50:43,335 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-06 18:50:43,336 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:50:43 BoogieIcfgContainer [2024-11-06 18:50:43,336 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 18:50:43,340 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 18:50:43,340 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 18:50:43,344 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 18:50:43,345 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 06:50:42" (1/3) ... [2024-11-06 18:50:43,345 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79eefacd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:50:43, skipping insertion in model container [2024-11-06 18:50:43,346 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:50:42" (2/3) ... [2024-11-06 18:50:43,346 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79eefacd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:50:43, skipping insertion in model container [2024-11-06 18:50:43,346 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:50:43" (3/3) ... [2024-11-06 18:50:43,347 INFO L112 eAbstractionObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2024-11-06 18:50:43,358 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 18:50:43,359 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-06 18:50:43,396 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 18:50:43,405 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;@5ac2fa62, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 18:50:43,406 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-06 18:50:43,411 INFO L276 IsEmpty]: Start isEmpty. Operand has 54 states, 40 states have (on average 1.475) internal successors, (59), 41 states have internal predecessors, (59), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-06 18:50:43,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-06 18:50:43,417 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:43,417 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:43,418 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:43,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:43,422 INFO L85 PathProgramCache]: Analyzing trace with hash 173410466, now seen corresponding path program 1 times [2024-11-06 18:50:43,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-06 18:50:43,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [235179574] [2024-11-06 18:50:43,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:43,443 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 [2024-11-06 18:50:43,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-06 18:50:43,447 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/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) [2024-11-06 18:50:43,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/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 [2024-11-06 18:50:43,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:43,525 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-06 18:50:43,530 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:50:43,665 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-06 18:50:43,665 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 18:50:43,665 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-06 18:50:43,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [235179574] [2024-11-06 18:50:43,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [235179574] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:50:43,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:50:43,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-06 18:50:43,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090287140] [2024-11-06 18:50:43,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:50:43,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-06 18:50:43,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-06 18:50:43,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-06 18:50:43,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-06 18:50:43,694 INFO L87 Difference]: Start difference. First operand has 54 states, 40 states have (on average 1.475) internal successors, (59), 41 states have internal predecessors, (59), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-06 18:50:43,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:43,823 INFO L93 Difference]: Finished difference Result 125 states and 190 transitions. [2024-11-06 18:50:43,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-06 18:50:43,825 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 31 [2024-11-06 18:50:43,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:43,831 INFO L225 Difference]: With dead ends: 125 [2024-11-06 18:50:43,831 INFO L226 Difference]: Without dead ends: 68 [2024-11-06 18:50:43,834 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-06 18:50:43,836 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 14 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:43,837 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 452 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:50:43,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-06 18:50:43,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 61. [2024-11-06 18:50:43,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 45 states have (on average 1.3111111111111111) internal successors, (59), 47 states have internal predecessors, (59), 10 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-06 18:50:43,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 81 transitions. [2024-11-06 18:50:43,879 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 81 transitions. Word has length 31 [2024-11-06 18:50:43,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:43,879 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 81 transitions. [2024-11-06 18:50:43,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-06 18:50:43,880 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 81 transitions. [2024-11-06 18:50:43,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-06 18:50:43,882 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:43,882 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:43,887 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/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 [2024-11-06 18:50:44,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/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 [2024-11-06 18:50:44,083 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:44,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:44,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1707598935, now seen corresponding path program 1 times [2024-11-06 18:50:44,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-06 18:50:44,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1757868103] [2024-11-06 18:50:44,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:44,084 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 [2024-11-06 18:50:44,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-06 18:50:44,088 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/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) [2024-11-06 18:50:44,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/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 [2024-11-06 18:50:44,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:44,150 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-06 18:50:44,153 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:50:44,248 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-06 18:50:44,249 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:50:44,327 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-06 18:50:44,329 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-06 18:50:44,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1757868103] [2024-11-06 18:50:44,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1757868103] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:50:44,329 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 18:50:44,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2024-11-06 18:50:44,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046894058] [2024-11-06 18:50:44,330 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 18:50:44,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-06 18:50:44,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-06 18:50:44,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-06 18:50:44,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-06 18:50:44,332 INFO L87 Difference]: Start difference. First operand 61 states and 81 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-06 18:50:44,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:44,460 INFO L93 Difference]: Finished difference Result 115 states and 153 transitions. [2024-11-06 18:50:44,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-06 18:50:44,462 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35 [2024-11-06 18:50:44,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:44,463 INFO L225 Difference]: With dead ends: 115 [2024-11-06 18:50:44,463 INFO L226 Difference]: Without dead ends: 87 [2024-11-06 18:50:44,464 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-06 18:50:44,464 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 15 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:44,465 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 485 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:50:44,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-06 18:50:44,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 71. [2024-11-06 18:50:44,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 52 states have (on average 1.2884615384615385) internal successors, (67), 54 states have internal predecessors, (67), 12 states have call successors, (12), 5 states have call predecessors, (12), 6 states have return successors, (15), 11 states have call predecessors, (15), 11 states have call successors, (15) [2024-11-06 18:50:44,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 94 transitions. [2024-11-06 18:50:44,488 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 94 transitions. Word has length 35 [2024-11-06 18:50:44,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:44,488 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 94 transitions. [2024-11-06 18:50:44,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-06 18:50:44,488 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 94 transitions. [2024-11-06 18:50:44,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-06 18:50:44,489 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:44,489 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:44,495 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/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 [2024-11-06 18:50:44,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-jdk21/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 [2024-11-06 18:50:44,690 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:44,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:44,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1508244029, now seen corresponding path program 1 times [2024-11-06 18:50:44,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-06 18:50:44,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1059461076] [2024-11-06 18:50:44,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:44,691 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 [2024-11-06 18:50:44,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-06 18:50:44,694 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/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) [2024-11-06 18:50:44,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/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 [2024-11-06 18:50:44,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:44,758 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-06 18:50:44,760 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:50:44,836 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-06 18:50:44,837 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:50:44,887 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-06 18:50:44,887 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-06 18:50:44,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1059461076] [2024-11-06 18:50:44,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1059461076] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:50:44,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 18:50:44,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2024-11-06 18:50:44,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092385225] [2024-11-06 18:50:44,888 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 18:50:44,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-06 18:50:44,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-06 18:50:44,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-06 18:50:44,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-06 18:50:44,889 INFO L87 Difference]: Start difference. First operand 71 states and 94 transitions. Second operand has 8 states, 8 states have (on average 3.0) internal successors, (24), 6 states have internal predecessors, (24), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:50:44,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:44,969 INFO L93 Difference]: Finished difference Result 110 states and 146 transitions. [2024-11-06 18:50:44,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-06 18:50:44,972 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 6 states have internal predecessors, (24), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 39 [2024-11-06 18:50:44,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:44,973 INFO L225 Difference]: With dead ends: 110 [2024-11-06 18:50:44,973 INFO L226 Difference]: Without dead ends: 86 [2024-11-06 18:50:44,973 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-06 18:50:44,974 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 12 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:44,974 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 453 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:50:44,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-06 18:50:44,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 81. [2024-11-06 18:50:44,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 59 states have (on average 1.2542372881355932) internal successors, (74), 61 states have internal predecessors, (74), 14 states have call successors, (14), 6 states have call predecessors, (14), 7 states have return successors, (17), 13 states have call predecessors, (17), 13 states have call successors, (17) [2024-11-06 18:50:44,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 105 transitions. [2024-11-06 18:50:44,984 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 105 transitions. Word has length 39 [2024-11-06 18:50:44,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:44,985 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 105 transitions. [2024-11-06 18:50:44,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 6 states have internal predecessors, (24), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:50:44,985 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 105 transitions. [2024-11-06 18:50:44,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-06 18:50:44,986 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:44,986 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:44,990 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/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)] Ended with exit code 0 [2024-11-06 18:50:45,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-jdk21/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 [2024-11-06 18:50:45,190 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:45,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:45,191 INFO L85 PathProgramCache]: Analyzing trace with hash -54729342, now seen corresponding path program 2 times [2024-11-06 18:50:45,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-06 18:50:45,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [192510664] [2024-11-06 18:50:45,191 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 18:50:45,191 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 [2024-11-06 18:50:45,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-06 18:50:45,195 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/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) [2024-11-06 18:50:45,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/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 (5)] Waiting until timeout for monitored process [2024-11-06 18:50:45,240 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-06 18:50:45,240 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:50:45,241 INFO L255 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-06 18:50:45,245 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:50:45,397 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-06 18:50:45,398 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 18:50:45,398 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-06 18:50:45,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [192510664] [2024-11-06 18:50:45,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [192510664] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:50:45,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:50:45,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-06 18:50:45,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813437038] [2024-11-06 18:50:45,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:50:45,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-06 18:50:45,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-06 18:50:45,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-06 18:50:45,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-06 18:50:45,399 INFO L87 Difference]: Start difference. First operand 81 states and 105 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-06 18:50:45,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:45,506 INFO L93 Difference]: Finished difference Result 91 states and 116 transitions. [2024-11-06 18:50:45,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-06 18:50:45,507 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2024-11-06 18:50:45,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:45,508 INFO L225 Difference]: With dead ends: 91 [2024-11-06 18:50:45,508 INFO L226 Difference]: Without dead ends: 89 [2024-11-06 18:50:45,509 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-06 18:50:45,509 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 3 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:45,510 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 313 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:50:45,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-06 18:50:45,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 87. [2024-11-06 18:50:45,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 63 states have (on average 1.253968253968254) internal successors, (79), 66 states have internal predecessors, (79), 15 states have call successors, (15), 7 states have call predecessors, (15), 8 states have return successors, (18), 13 states have call predecessors, (18), 14 states have call successors, (18) [2024-11-06 18:50:45,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 112 transitions. [2024-11-06 18:50:45,524 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 112 transitions. Word has length 39 [2024-11-06 18:50:45,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:45,525 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 112 transitions. [2024-11-06 18:50:45,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-06 18:50:45,525 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 112 transitions. [2024-11-06 18:50:45,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-06 18:50:45,528 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:45,528 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:45,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/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 (5)] Forceful destruction successful, exit code 0 [2024-11-06 18:50:45,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/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 [2024-11-06 18:50:45,729 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:45,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:45,730 INFO L85 PathProgramCache]: Analyzing trace with hash 2528960, now seen corresponding path program 1 times [2024-11-06 18:50:45,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-06 18:50:45,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2003501215] [2024-11-06 18:50:45,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:45,730 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 [2024-11-06 18:50:45,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-06 18:50:45,732 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/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) [2024-11-06 18:50:45,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/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 (6)] Waiting until timeout for monitored process [2024-11-06 18:50:45,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:45,778 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-06 18:50:45,780 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:50:45,878 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-06 18:50:45,879 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 18:50:45,879 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-06 18:50:45,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2003501215] [2024-11-06 18:50:45,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2003501215] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:50:45,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:50:45,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-06 18:50:45,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763224666] [2024-11-06 18:50:45,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:50:45,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-06 18:50:45,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-06 18:50:45,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-06 18:50:45,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-06 18:50:45,880 INFO L87 Difference]: Start difference. First operand 87 states and 112 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-06 18:50:45,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:45,982 INFO L93 Difference]: Finished difference Result 93 states and 117 transitions. [2024-11-06 18:50:45,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-06 18:50:45,983 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2024-11-06 18:50:45,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:45,984 INFO L225 Difference]: With dead ends: 93 [2024-11-06 18:50:45,987 INFO L226 Difference]: Without dead ends: 91 [2024-11-06 18:50:45,987 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-06 18:50:45,988 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 3 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:45,988 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 308 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:50:45,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-06 18:50:45,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 85. [2024-11-06 18:50:45,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 62 states have (on average 1.2419354838709677) internal successors, (77), 64 states have internal predecessors, (77), 14 states have call successors, (14), 7 states have call predecessors, (14), 8 states have return successors, (17), 13 states have call predecessors, (17), 13 states have call successors, (17) [2024-11-06 18:50:45,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 108 transitions. [2024-11-06 18:50:45,998 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 108 transitions. Word has length 39 [2024-11-06 18:50:45,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:45,998 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 108 transitions. [2024-11-06 18:50:45,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-06 18:50:45,999 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 108 transitions. [2024-11-06 18:50:46,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-06 18:50:46,000 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:46,000 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:46,004 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/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 (6)] Ended with exit code 0 [2024-11-06 18:50:46,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/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 [2024-11-06 18:50:46,201 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:46,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:46,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1837968146, now seen corresponding path program 1 times [2024-11-06 18:50:46,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-06 18:50:46,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1900155928] [2024-11-06 18:50:46,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:46,202 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 [2024-11-06 18:50:46,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-06 18:50:46,204 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/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) [2024-11-06 18:50:46,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/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 (7)] Waiting until timeout for monitored process [2024-11-06 18:50:46,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:46,271 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-06 18:50:46,278 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:50:46,391 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-06 18:50:46,391 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 18:50:46,391 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-06 18:50:46,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1900155928] [2024-11-06 18:50:46,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1900155928] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:50:46,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:50:46,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-06 18:50:46,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386983946] [2024-11-06 18:50:46,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:50:46,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-06 18:50:46,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-06 18:50:46,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-06 18:50:46,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-06 18:50:46,392 INFO L87 Difference]: Start difference. First operand 85 states and 108 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 9 states have internal predecessors, (28), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-06 18:50:46,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:46,611 INFO L93 Difference]: Finished difference Result 124 states and 163 transitions. [2024-11-06 18:50:46,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-06 18:50:46,611 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 9 states have internal predecessors, (28), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 44 [2024-11-06 18:50:46,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:46,613 INFO L225 Difference]: With dead ends: 124 [2024-11-06 18:50:46,616 INFO L226 Difference]: Without dead ends: 117 [2024-11-06 18:50:46,617 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-11-06 18:50:46,617 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 22 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:46,618 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 579 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 18:50:46,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-11-06 18:50:46,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 100. [2024-11-06 18:50:46,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 72 states have (on average 1.2361111111111112) internal successors, (89), 74 states have internal predecessors, (89), 18 states have call successors, (18), 7 states have call predecessors, (18), 9 states have return successors, (24), 18 states have call predecessors, (24), 17 states have call successors, (24) [2024-11-06 18:50:46,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 131 transitions. [2024-11-06 18:50:46,642 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 131 transitions. Word has length 44 [2024-11-06 18:50:46,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:46,642 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 131 transitions. [2024-11-06 18:50:46,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 9 states have internal predecessors, (28), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-06 18:50:46,643 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 131 transitions. [2024-11-06 18:50:46,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-06 18:50:46,646 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:46,646 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:46,650 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/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 (7)] Ended with exit code 0 [2024-11-06 18:50:46,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/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 [2024-11-06 18:50:46,847 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:46,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:46,847 INFO L85 PathProgramCache]: Analyzing trace with hash 595859751, now seen corresponding path program 1 times [2024-11-06 18:50:46,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-06 18:50:46,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1438755276] [2024-11-06 18:50:46,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:46,848 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 [2024-11-06 18:50:46,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-06 18:50:46,850 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/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) [2024-11-06 18:50:46,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/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 (8)] Waiting until timeout for monitored process [2024-11-06 18:50:46,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:46,896 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-06 18:50:46,899 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:50:46,966 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-06 18:50:46,966 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 18:50:46,966 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-06 18:50:46,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1438755276] [2024-11-06 18:50:46,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1438755276] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:50:46,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:50:46,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-06 18:50:46,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983284583] [2024-11-06 18:50:46,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:50:46,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-06 18:50:46,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-06 18:50:46,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-06 18:50:46,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-06 18:50:46,968 INFO L87 Difference]: Start difference. First operand 100 states and 131 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 7 states have internal predecessors, (32), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-06 18:50:47,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:47,074 INFO L93 Difference]: Finished difference Result 158 states and 200 transitions. [2024-11-06 18:50:47,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-06 18:50:47,075 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 7 states have internal predecessors, (32), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 49 [2024-11-06 18:50:47,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:47,076 INFO L225 Difference]: With dead ends: 158 [2024-11-06 18:50:47,076 INFO L226 Difference]: Without dead ends: 121 [2024-11-06 18:50:47,077 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-06 18:50:47,077 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 14 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:47,077 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 521 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:50:47,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-11-06 18:50:47,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 107. [2024-11-06 18:50:47,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 79 states have (on average 1.2025316455696202) internal successors, (95), 81 states have internal predecessors, (95), 16 states have call successors, (16), 9 states have call predecessors, (16), 11 states have return successors, (20), 16 states have call predecessors, (20), 15 states have call successors, (20) [2024-11-06 18:50:47,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 131 transitions. [2024-11-06 18:50:47,101 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 131 transitions. Word has length 49 [2024-11-06 18:50:47,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:47,101 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 131 transitions. [2024-11-06 18:50:47,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 7 states have internal predecessors, (32), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-06 18:50:47,101 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 131 transitions. [2024-11-06 18:50:47,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-06 18:50:47,102 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:47,102 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:47,105 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/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 (8)] Ended with exit code 0 [2024-11-06 18:50:47,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-jdk21/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 [2024-11-06 18:50:47,303 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:47,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:47,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1849173563, now seen corresponding path program 1 times [2024-11-06 18:50:47,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-06 18:50:47,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [894040827] [2024-11-06 18:50:47,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:47,304 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 [2024-11-06 18:50:47,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-06 18:50:47,306 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/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) [2024-11-06 18:50:47,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/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 (9)] Waiting until timeout for monitored process [2024-11-06 18:50:47,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-06 18:50:47,356 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-06 18:50:47,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-06 18:50:47,419 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2024-11-06 18:50:47,419 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-06 18:50:47,420 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-06 18:50:47,425 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/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 (9)] Ended with exit code 0 [2024-11-06 18:50:47,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/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 [2024-11-06 18:50:47,624 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:47,646 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-06 18:50:47,649 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 06:50:47 BoogieIcfgContainer [2024-11-06 18:50:47,649 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-06 18:50:47,649 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-06 18:50:47,649 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-06 18:50:47,649 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-06 18:50:47,650 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:50:43" (3/4) ... [2024-11-06 18:50:47,650 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-06 18:50:47,688 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-06 18:50:47,688 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-06 18:50:47,688 INFO L158 Benchmark]: Toolchain (without parser) took 5051.33ms. Allocated memory is still 83.9MB. Free memory was 60.2MB in the beginning and 42.1MB in the end (delta: 18.1MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. [2024-11-06 18:50:47,689 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 83.9MB. Free memory is still 64.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-06 18:50:47,689 INFO L158 Benchmark]: CACSL2BoogieTranslator took 262.88ms. Allocated memory is still 83.9MB. Free memory was 59.9MB in the beginning and 46.6MB in the end (delta: 13.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-06 18:50:47,689 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.97ms. Allocated memory is still 83.9MB. Free memory was 46.6MB in the beginning and 45.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-06 18:50:47,689 INFO L158 Benchmark]: Boogie Preprocessor took 53.54ms. Allocated memory is still 83.9MB. Free memory was 45.2MB in the beginning and 43.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-06 18:50:47,689 INFO L158 Benchmark]: RCFGBuilder took 343.57ms. Allocated memory is still 83.9MB. Free memory was 43.5MB in the beginning and 29.0MB in the end (delta: 14.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-06 18:50:47,689 INFO L158 Benchmark]: TraceAbstraction took 4308.88ms. Allocated memory is still 83.9MB. Free memory was 28.4MB in the beginning and 45.2MB in the end (delta: -16.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-06 18:50:47,690 INFO L158 Benchmark]: Witness Printer took 38.63ms. Allocated memory is still 83.9MB. Free memory was 44.5MB in the beginning and 42.1MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-06 18:50:47,692 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 83.9MB. Free memory is still 64.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 262.88ms. Allocated memory is still 83.9MB. Free memory was 59.9MB in the beginning and 46.6MB in the end (delta: 13.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.97ms. Allocated memory is still 83.9MB. Free memory was 46.6MB in the beginning and 45.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 53.54ms. Allocated memory is still 83.9MB. Free memory was 45.2MB in the beginning and 43.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 343.57ms. Allocated memory is still 83.9MB. Free memory was 43.5MB in the beginning and 29.0MB in the end (delta: 14.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 4308.88ms. Allocated memory is still 83.9MB. Free memory was 28.4MB in the beginning and 45.2MB in the end (delta: -16.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 38.63ms. Allocated memory is still 83.9MB. Free memory was 44.5MB in the beginning and 42.1MB in the end (delta: 2.4MB). 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 - CounterExampleResult [Line: 17]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L226] unsigned int a ; [L227] unsigned int ma = __VERIFIER_nondet_uint(); [L228] signed char ea = __VERIFIER_nondet_char(); [L229] unsigned int b ; [L230] unsigned int mb = __VERIFIER_nondet_uint(); [L231] signed char eb = __VERIFIER_nondet_char(); [L232] unsigned int r_add1 ; [L233] unsigned int r_add2 ; [L234] unsigned int zero ; [L235] int tmp ; [L236] int tmp___0 ; [L237] int __retres14 ; [L241] CALL, EXPR base2flt(0, 0) VAL [\old(e)=0, \old(m)=0] [L25] unsigned int res ; [L26] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=0, e=0, m=0] [L29] COND TRUE ! m [L30] __retres4 = 0U VAL [\old(e)=0, \old(m)=0, __retres4=0, e=0] [L80] return (__retres4); VAL [\old(e)=0, \old(m)=0, \result=0, e=0] [L241] RET, EXPR base2flt(0, 0) [L241] zero = base2flt(0, 0) [L242] CALL, EXPR base2flt(ma, ea) VAL [\old(e)=0, \old(m)=16777216] [L25] unsigned int res ; [L26] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L29] COND FALSE !(! m) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L35] COND FALSE !(m < 1U << 24U) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L57] COND TRUE 1 VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L59] COND FALSE !(m >= 1U << 25U) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L76] m = m & ~ (1U << 24U) [L77] res = m | ((unsigned int )(e + 128) << 24U) [L78] __retres4 = res VAL [\old(e)=0, \old(m)=16777216, __retres4=-2147483648] [L80] return (__retres4); VAL [\old(e)=0, \old(m)=16777216, \result=-2147483648] [L242] RET, EXPR base2flt(ma, ea) VAL [ea=0, ma=16777216] [L242] a = base2flt(ma, ea) [L243] CALL, EXPR base2flt(mb, eb) VAL [\old(e)=64, \old(m)=16777216] [L25] unsigned int res ; [L26] unsigned int __retres4 ; VAL [\old(e)=64, \old(m)=16777216, e=64, m=16777216] [L29] COND FALSE !(! m) VAL [\old(e)=64, \old(m)=16777216, e=64, m=16777216] [L35] COND FALSE !(m < 1U << 24U) VAL [\old(e)=64, \old(m)=16777216, e=64, m=16777216] [L57] COND TRUE 1 VAL [\old(e)=64, \old(m)=16777216, e=64, m=16777216] [L59] COND FALSE !(m >= 1U << 25U) VAL [\old(e)=64, \old(m)=16777216, e=64, m=16777216] [L76] m = m & ~ (1U << 24U) [L77] res = m | ((unsigned int )(e + 128) << 24U) [L78] __retres4 = res VAL [\old(e)=64, \old(m)=16777216, __retres4=-1073741824] [L80] return (__retres4); VAL [\old(e)=64, \old(m)=16777216, \result=-1073741824] [L243] RET, EXPR base2flt(mb, eb) VAL [a=-2147483648, ea=0, eb=64, ma=16777216, mb=16777216] [L243] b = base2flt(mb, eb) [L244] CALL addflt(a, b) VAL [\old(a)=-2147483648, \old(b)=-1073741824] [L84] unsigned int res ; [L85] unsigned int ma ; [L86] unsigned int mb ; [L87] unsigned int delta ; [L88] int ea ; [L89] int eb ; [L90] unsigned int tmp ; [L91] unsigned int __retres10 ; VAL [\old(a)=-2147483648, \old(b)=-1073741824, a=-2147483648, b=-1073741824] [L94] COND TRUE a < b [L95] tmp = a [L96] a = b [L97] b = tmp VAL [\old(a)=-2147483648, \old(b)=-1073741824, a=-1073741824, b=-2147483648] [L101] COND FALSE !(! b) [L108] ma = a & ((1U << 24U) - 1U) [L109] ea = (int )(a >> 24U) - 128 [L110] ma = ma | (1U << 24U) [L111] mb = b & ((1U << 24U) - 1U) [L112] eb = (int )(b >> 24U) - 128 [L113] mb = mb | (1U << 24U) VAL [\old(a)=-2147483648, \old(b)=-1073741824, a=-1073741824, ea=64, eb=0, ma=16777216, mb=16777216] [L114] CALL __VERIFIER_assert(ea >= eb) VAL [\old(cond)=1] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1] [L114] RET __VERIFIER_assert(ea >= eb) VAL [\old(a)=-2147483648, \old(b)=-1073741824, a=-1073741824, ea=64, eb=0, ma=16777216, mb=16777216] [L115] delta = ea - eb VAL [\old(a)=-2147483648, \old(b)=-1073741824, a=-1073741824, delta=64, ea=64, ma=16777216, mb=16777216] [L116] CALL __VERIFIER_assert(delta < sizeof(mb) * 8) VAL [\old(cond)=0] [L16] COND TRUE !(cond) VAL [\old(cond)=0] [L17] reach_error() VAL [\old(cond)=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.2s, OverallIterations: 8, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 97 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 83 mSDsluCounter, 3111 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2656 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 502 IncrementalHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 455 mSDtfsCounter, 502 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 353 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=107occurred in iteration=7, InterpolantAutomatonStates: 59, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 67 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 321 NumberOfCodeBlocks, 303 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 341 ConstructedInterpolants, 2 QuantifiedInterpolants, 541 SizeOfPredicates, 10 NumberOfNonLiveVariables, 535 ConjunctsInSsa, 58 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 148/160 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 RESULT: Ultimate proved your program to be incorrect! [2024-11-06 18:50:47,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/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 Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE