./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound2.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/nla-digbench-scaling/hard2_valuebound2.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', '39b9505d3a064a677b57bccb6de3a4c04e873275d34ee3c16e80371638b07149'] 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/nla-digbench-scaling/hard2_valuebound2.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 39b9505d3a064a677b57bccb6de3a4c04e873275d34ee3c16e80371638b07149 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-06 23:06:56,774 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 23:06:56,842 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-06 23:06:56,845 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 23:06:56,845 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 23:06:56,864 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 23:06:56,865 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 23:06:56,866 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 23:06:56,866 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 23:06:56,866 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 23:06:56,866 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 23:06:56,866 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 23:06:56,866 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 23:06:56,866 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 23:06:56,866 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 23:06:56,866 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 23:06:56,866 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 23:06:56,866 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-06 23:06:56,866 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-06 23:06:56,866 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-06 23:06:56,866 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 23:06:56,867 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 23:06:56,867 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 23:06:56,867 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 23:06:56,867 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 23:06:56,867 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-06 23:06:56,867 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 23:06:56,867 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 23:06:56,867 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 23:06:56,867 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 23:06:56,867 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 23:06:56,867 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 23:06:56,867 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 23:06:56,867 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 23:06:56,867 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 23:06:56,867 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 23:06:56,867 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-06 23:06:56,867 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-06 23:06:56,867 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 23:06:56,867 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 23:06:56,867 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 23:06:56,868 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 23:06:56,868 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 -> 39b9505d3a064a677b57bccb6de3a4c04e873275d34ee3c16e80371638b07149 [2024-11-06 23:06:57,088 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 23:06:57,095 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 23:06:57,097 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 23:06:57,098 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 23:06:57,098 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 23:06:57,100 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound2.c [2024-11-06 23:06:58,235 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 23:06:58,451 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 23:06:58,452 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound2.c [2024-11-06 23:06:58,459 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c1003511a/8279c1bc46f0406992945f6ddc5b19da/FLAG2f79cca1a [2024-11-06 23:06:58,808 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c1003511a/8279c1bc46f0406992945f6ddc5b19da [2024-11-06 23:06:58,810 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 23:06:58,810 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-06 23:06:58,812 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 23:06:58,813 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 23:06:58,815 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 23:06:58,816 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:06:58" (1/1) ... [2024-11-06 23:06:58,816 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a1699d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:58, skipping insertion in model container [2024-11-06 23:06:58,816 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:06:58" (1/1) ... [2024-11-06 23:06:58,826 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 23:06:58,912 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/nla-digbench-scaling/hard2_valuebound2.c[526,539] [2024-11-06 23:06:58,920 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 23:06:58,927 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 23:06:58,933 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/nla-digbench-scaling/hard2_valuebound2.c[526,539] [2024-11-06 23:06:58,938 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 23:06:58,955 INFO L204 MainTranslator]: Completed translation [2024-11-06 23:06:58,956 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:58 WrapperNode [2024-11-06 23:06:58,956 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 23:06:58,956 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 23:06:58,956 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 23:06:58,956 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 23:06:58,964 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:58" (1/1) ... [2024-11-06 23:06:58,972 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:58" (1/1) ... [2024-11-06 23:06:58,985 INFO L138 Inliner]: procedures = 14, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 64 [2024-11-06 23:06:58,985 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 23:06:58,986 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 23:06:58,986 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 23:06:58,986 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 23:06:58,992 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:58" (1/1) ... [2024-11-06 23:06:58,992 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:58" (1/1) ... [2024-11-06 23:06:58,993 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:58" (1/1) ... [2024-11-06 23:06:59,002 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0]. [2024-11-06 23:06:59,003 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:58" (1/1) ... [2024-11-06 23:06:59,003 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:58" (1/1) ... [2024-11-06 23:06:59,007 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:58" (1/1) ... [2024-11-06 23:06:59,010 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:58" (1/1) ... [2024-11-06 23:06:59,011 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:58" (1/1) ... [2024-11-06 23:06:59,011 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:58" (1/1) ... [2024-11-06 23:06:59,012 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 23:06:59,013 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 23:06:59,013 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 23:06:59,013 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 23:06:59,014 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:58" (1/1) ... [2024-11-06 23:06:59,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 23:06:59,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:06:59,036 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 23:06:59,040 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 23:06:59,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 23:06:59,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-06 23:06:59,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-06 23:06:59,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 23:06:59,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 23:06:59,071 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-06 23:06:59,071 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-06 23:06:59,155 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 23:06:59,157 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 23:06:59,255 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-11-06 23:06:59,255 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 23:06:59,260 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 23:06:59,261 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-06 23:06:59,261 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:06:59 BoogieIcfgContainer [2024-11-06 23:06:59,261 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 23:06:59,263 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 23:06:59,263 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 23:06:59,266 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 23:06:59,267 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:06:58" (1/3) ... [2024-11-06 23:06:59,267 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34c29d9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:06:59, skipping insertion in model container [2024-11-06 23:06:59,268 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:58" (2/3) ... [2024-11-06 23:06:59,268 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34c29d9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:06:59, skipping insertion in model container [2024-11-06 23:06:59,268 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:06:59" (3/3) ... [2024-11-06 23:06:59,269 INFO L112 eAbstractionObserver]: Analyzing ICFG hard2_valuebound2.c [2024-11-06 23:06:59,279 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 23:06:59,280 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-06 23:06:59,318 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 23:06:59,331 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;@10a92239, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 23:06:59,332 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-06 23:06:59,337 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 16 states have (on average 1.625) internal successors, (26), 17 states have internal predecessors, (26), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-06 23:06:59,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-06 23:06:59,341 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:06:59,342 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:06:59,342 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:06:59,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:06:59,345 INFO L85 PathProgramCache]: Analyzing trace with hash -586848446, now seen corresponding path program 1 times [2024-11-06 23:06:59,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:06:59,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448106387] [2024-11-06 23:06:59,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:06:59,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:06:59,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:06:59,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 23:06:59,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:06:59,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448106387] [2024-11-06 23:06:59,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448106387] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 23:06:59,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 23:06:59,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 23:06:59,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963933419] [2024-11-06 23:06:59,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 23:06:59,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-06 23:06:59,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:06:59,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-06 23:06:59,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-06 23:06:59,493 INFO L87 Difference]: Start difference. First operand has 26 states, 16 states have (on average 1.625) internal successors, (26), 17 states have internal predecessors, (26), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 23:06:59,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:06:59,512 INFO L93 Difference]: Finished difference Result 49 states and 83 transitions. [2024-11-06 23:06:59,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-06 23:06:59,513 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-06 23:06:59,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:06:59,519 INFO L225 Difference]: With dead ends: 49 [2024-11-06 23:06:59,520 INFO L226 Difference]: Without dead ends: 22 [2024-11-06 23:06:59,521 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-06 23:06:59,526 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 23:06:59,527 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 23:06:59,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-06 23:06:59,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-11-06 23:06:59,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-06 23:06:59,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2024-11-06 23:06:59,555 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 9 [2024-11-06 23:06:59,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:06:59,556 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2024-11-06 23:06:59,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 23:06:59,556 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2024-11-06 23:06:59,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-06 23:06:59,558 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:06:59,558 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:06:59,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-06 23:06:59,558 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:06:59,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:06:59,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1188158916, now seen corresponding path program 1 times [2024-11-06 23:06:59,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:06:59,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116245609] [2024-11-06 23:06:59,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:06:59,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:06:59,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:06:59,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 23:06:59,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:06:59,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116245609] [2024-11-06 23:06:59,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116245609] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 23:06:59,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 23:06:59,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-06 23:06:59,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449528497] [2024-11-06 23:06:59,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 23:06:59,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 23:06:59,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:06:59,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 23:06:59,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 23:06:59,715 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 23:06:59,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:06:59,771 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2024-11-06 23:06:59,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 23:06:59,771 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-06 23:06:59,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:06:59,772 INFO L225 Difference]: With dead ends: 35 [2024-11-06 23:06:59,772 INFO L226 Difference]: Without dead ends: 33 [2024-11-06 23:06:59,772 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-06 23:06:59,773 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 9 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 23:06:59,773 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 90 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 23:06:59,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-06 23:06:59,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 26. [2024-11-06 23:06:59,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-06 23:06:59,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2024-11-06 23:06:59,778 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 9 [2024-11-06 23:06:59,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:06:59,779 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2024-11-06 23:06:59,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 23:06:59,779 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2024-11-06 23:06:59,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-06 23:06:59,779 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:06:59,779 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:06:59,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-06 23:06:59,780 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:06:59,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:06:59,780 INFO L85 PathProgramCache]: Analyzing trace with hash -697944935, now seen corresponding path program 1 times [2024-11-06 23:06:59,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:06:59,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516482138] [2024-11-06 23:06:59,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:06:59,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:06:59,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:06:59,878 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-06 23:06:59,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:06:59,886 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 23:06:59,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:06:59,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516482138] [2024-11-06 23:06:59,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516482138] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 23:06:59,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 23:06:59,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-06 23:06:59,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680871342] [2024-11-06 23:06:59,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 23:06:59,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 23:06:59,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:06:59,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 23:06:59,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 23:06:59,890 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-06 23:06:59,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:06:59,934 INFO L93 Difference]: Finished difference Result 39 states and 50 transitions. [2024-11-06 23:06:59,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 23:06:59,934 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2024-11-06 23:06:59,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:06:59,935 INFO L225 Difference]: With dead ends: 39 [2024-11-06 23:06:59,935 INFO L226 Difference]: Without dead ends: 37 [2024-11-06 23:06:59,935 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-06 23:06:59,936 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 9 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 23:06:59,936 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 87 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 23:06:59,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-06 23:06:59,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2024-11-06 23:06:59,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-06 23:06:59,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2024-11-06 23:06:59,941 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 14 [2024-11-06 23:06:59,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:06:59,941 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2024-11-06 23:06:59,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-06 23:06:59,941 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2024-11-06 23:06:59,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-06 23:06:59,941 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:06:59,941 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:06:59,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-06 23:06:59,942 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:06:59,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:06:59,942 INFO L85 PathProgramCache]: Analyzing trace with hash 262992548, now seen corresponding path program 1 times [2024-11-06 23:06:59,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:06:59,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142954918] [2024-11-06 23:06:59,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:06:59,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:06:59,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 23:06:59,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [283066475] [2024-11-06 23:06:59,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:06:59,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:06:59,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:06:59,967 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 23:06:59,968 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 23:07:00,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:00,009 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-06 23:07:00,011 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:07:00,081 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 23:07:00,081 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 23:07:00,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:07:00,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142954918] [2024-11-06 23:07:00,081 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 23:07:00,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283066475] [2024-11-06 23:07:00,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283066475] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 23:07:00,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 23:07:00,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-06 23:07:00,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072355758] [2024-11-06 23:07:00,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 23:07:00,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 23:07:00,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:07:00,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 23:07:00,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 23:07:00,082 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-06 23:07:00,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:07:00,154 INFO L93 Difference]: Finished difference Result 56 states and 73 transitions. [2024-11-06 23:07:00,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 23:07:00,154 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2024-11-06 23:07:00,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:07:00,155 INFO L225 Difference]: With dead ends: 56 [2024-11-06 23:07:00,155 INFO L226 Difference]: Without dead ends: 43 [2024-11-06 23:07:00,155 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-06 23:07:00,156 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 5 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 23:07:00,156 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 89 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 23:07:00,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-06 23:07:00,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2024-11-06 23:07:00,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 27 states have internal predecessors, (31), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-06 23:07:00,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 54 transitions. [2024-11-06 23:07:00,167 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 54 transitions. Word has length 19 [2024-11-06 23:07:00,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:07:00,167 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 54 transitions. [2024-11-06 23:07:00,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-06 23:07:00,167 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 54 transitions. [2024-11-06 23:07:00,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-06 23:07:00,168 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:07:00,168 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:07:00,181 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 23:07:00,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:07:00,369 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:07:00,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:07:00,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1807142342, now seen corresponding path program 1 times [2024-11-06 23:07:00,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:07:00,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014898059] [2024-11-06 23:07:00,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:07:00,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:07:00,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 23:07:00,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1616076581] [2024-11-06 23:07:00,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:07:00,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:07:00,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:07:00,397 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 23:07:00,398 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 23:07:00,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:00,433 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-06 23:07:00,434 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:07:00,501 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-06 23:07:00,502 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:07:00,606 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-06 23:07:00,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:07:00,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014898059] [2024-11-06 23:07:00,607 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 23:07:00,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616076581] [2024-11-06 23:07:00,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616076581] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 23:07:00,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 23:07:00,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2024-11-06 23:07:00,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638925696] [2024-11-06 23:07:00,607 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 23:07:00,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-06 23:07:00,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:07:00,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-06 23:07:00,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-06 23:07:00,608 INFO L87 Difference]: Start difference. First operand 43 states and 54 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-06 23:07:00,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:07:00,677 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2024-11-06 23:07:00,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-06 23:07:00,678 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 26 [2024-11-06 23:07:00,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:07:00,697 INFO L225 Difference]: With dead ends: 56 [2024-11-06 23:07:00,698 INFO L226 Difference]: Without dead ends: 54 [2024-11-06 23:07:00,698 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-06 23:07:00,698 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 23:07:00,699 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 68 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 23:07:00,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-06 23:07:00,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2024-11-06 23:07:00,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 32 states have (on average 1.21875) internal successors, (39), 34 states have internal predecessors, (39), 15 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-06 23:07:00,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 68 transitions. [2024-11-06 23:07:00,706 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 68 transitions. Word has length 26 [2024-11-06 23:07:00,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:07:00,706 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 68 transitions. [2024-11-06 23:07:00,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-06 23:07:00,706 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 68 transitions. [2024-11-06 23:07:00,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-06 23:07:00,707 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:07:00,707 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:07:00,720 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 23:07:00,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:07:00,908 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:07:00,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:07:00,909 INFO L85 PathProgramCache]: Analyzing trace with hash -979933353, now seen corresponding path program 1 times [2024-11-06 23:07:00,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:07:00,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635971472] [2024-11-06 23:07:00,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:07:00,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:07:00,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 23:07:00,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [852732475] [2024-11-06 23:07:00,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:07:00,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:07:00,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:07:00,941 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 23:07:00,942 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 23:07:00,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:00,981 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-06 23:07:00,982 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:07:01,055 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-06 23:07:01,056 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:07:01,104 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-06 23:07:01,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:07:01,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635971472] [2024-11-06 23:07:01,104 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 23:07:01,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852732475] [2024-11-06 23:07:01,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852732475] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-06 23:07:01,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 23:07:01,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-11-06 23:07:01,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819506831] [2024-11-06 23:07:01,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 23:07:01,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 23:07:01,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:07:01,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 23:07:01,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-06 23:07:01,106 INFO L87 Difference]: Start difference. First operand 53 states and 68 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-06 23:07:02,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-06 23:07:02,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:07:02,436 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2024-11-06 23:07:02,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 23:07:02,436 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2024-11-06 23:07:02,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:07:02,438 INFO L225 Difference]: With dead ends: 63 [2024-11-06 23:07:02,438 INFO L226 Difference]: Without dead ends: 61 [2024-11-06 23:07:02,438 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 63 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-06 23:07:02,439 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 5 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-06 23:07:02,439 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 82 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-06 23:07:02,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-06 23:07:02,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2024-11-06 23:07:02,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 36 states have (on average 1.1944444444444444) internal successors, (43), 39 states have internal predecessors, (43), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (16), 14 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-06 23:07:02,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 76 transitions. [2024-11-06 23:07:02,447 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 76 transitions. Word has length 36 [2024-11-06 23:07:02,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:07:02,447 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 76 transitions. [2024-11-06 23:07:02,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-06 23:07:02,448 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 76 transitions. [2024-11-06 23:07:02,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-06 23:07:02,448 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:07:02,449 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 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 23:07:02,467 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 23:07:02,649 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 23:07:02,649 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:07:02,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:07:02,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1438911711, now seen corresponding path program 1 times [2024-11-06 23:07:02,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:07:02,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791375303] [2024-11-06 23:07:02,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:07:02,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:07:02,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:02,734 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-06 23:07:02,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:02,741 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-06 23:07:02,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:02,747 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-06 23:07:02,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:02,753 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-06 23:07:02,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:02,761 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-06 23:07:02,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:02,767 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-06 23:07:02,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:02,772 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-06 23:07:02,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:07:02,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791375303] [2024-11-06 23:07:02,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791375303] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 23:07:02,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 23:07:02,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-06 23:07:02,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564981962] [2024-11-06 23:07:02,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 23:07:02,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 23:07:02,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:07:02,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 23:07:02,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 23:07:02,776 INFO L87 Difference]: Start difference. First operand 60 states and 76 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-06 23:07:02,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:07:02,815 INFO L93 Difference]: Finished difference Result 68 states and 84 transitions. [2024-11-06 23:07:02,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 23:07:02,815 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 42 [2024-11-06 23:07:02,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:07:02,816 INFO L225 Difference]: With dead ends: 68 [2024-11-06 23:07:02,817 INFO L226 Difference]: Without dead ends: 56 [2024-11-06 23:07:02,817 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-06 23:07:02,818 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 3 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 23:07:02,818 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 99 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 23:07:02,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-06 23:07:02,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-11-06 23:07:02,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 37 states have internal predecessors, (40), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-06 23:07:02,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2024-11-06 23:07:02,831 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 42 [2024-11-06 23:07:02,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:07:02,831 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 69 transitions. [2024-11-06 23:07:02,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-06 23:07:02,832 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions. [2024-11-06 23:07:02,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-06 23:07:02,832 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:07:02,832 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:07:02,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-06 23:07:02,832 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:07:02,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:07:02,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1034157389, now seen corresponding path program 1 times [2024-11-06 23:07:02,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:07:02,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078689557] [2024-11-06 23:07:02,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:07:02,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:07:02,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 23:07:02,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1840514472] [2024-11-06 23:07:02,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:07:02,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:07:02,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:07:02,883 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 23:07:02,884 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 23:07:02,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:02,931 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-06 23:07:02,933 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:07:03,160 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 18 proven. 26 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-11-06 23:07:03,160 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:07:04,293 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 18 proven. 26 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-11-06 23:07:04,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:07:04,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078689557] [2024-11-06 23:07:04,293 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 23:07:04,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840514472] [2024-11-06 23:07:04,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840514472] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 23:07:04,294 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 23:07:04,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2024-11-06 23:07:04,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714236330] [2024-11-06 23:07:04,294 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 23:07:04,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-06 23:07:04,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:07:04,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-06 23:07:04,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-11-06 23:07:04,297 INFO L87 Difference]: Start difference. First operand 56 states and 69 transitions. Second operand has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 14 states have internal predecessors, (34), 7 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-06 23:07:04,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:07:04,752 INFO L93 Difference]: Finished difference Result 131 states and 176 transitions. [2024-11-06 23:07:04,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-06 23:07:04,754 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 14 states have internal predecessors, (34), 7 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) Word has length 56 [2024-11-06 23:07:04,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:07:04,755 INFO L225 Difference]: With dead ends: 131 [2024-11-06 23:07:04,755 INFO L226 Difference]: Without dead ends: 108 [2024-11-06 23:07:04,756 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2024-11-06 23:07:04,756 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 28 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 23:07:04,756 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 167 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 23:07:04,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-06 23:07:04,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 106. [2024-11-06 23:07:04,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 64 states have (on average 1.21875) internal successors, (78), 69 states have internal predecessors, (78), 31 states have call successors, (31), 10 states have call predecessors, (31), 10 states have return successors, (30), 26 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-06 23:07:04,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 139 transitions. [2024-11-06 23:07:04,779 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 139 transitions. Word has length 56 [2024-11-06 23:07:04,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:07:04,779 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 139 transitions. [2024-11-06 23:07:04,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 14 states have internal predecessors, (34), 7 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-06 23:07:04,779 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 139 transitions. [2024-11-06 23:07:04,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-06 23:07:04,780 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:07:04,780 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:07:04,794 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-06 23:07:04,984 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,SelfDestructingSolverStorable7 [2024-11-06 23:07:04,985 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:07:04,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:07:04,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1199454569, now seen corresponding path program 1 times [2024-11-06 23:07:04,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:07:04,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877747642] [2024-11-06 23:07:04,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:07:04,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:07:05,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 23:07:05,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1352163672] [2024-11-06 23:07:05,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:07:05,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:07:05,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:07:05,022 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 23:07:05,023 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 23:07:05,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:05,069 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-06 23:07:05,086 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:07:05,285 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 22 proven. 34 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-11-06 23:07:05,286 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:07:05,755 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 22 proven. 34 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-11-06 23:07:05,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:07:05,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877747642] [2024-11-06 23:07:05,755 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 23:07:05,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352163672] [2024-11-06 23:07:05,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352163672] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 23:07:05,755 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 23:07:05,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2024-11-06 23:07:05,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979375832] [2024-11-06 23:07:05,756 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 23:07:05,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-06 23:07:05,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:07:05,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-06 23:07:05,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2024-11-06 23:07:05,757 INFO L87 Difference]: Start difference. First operand 106 states and 139 transitions. Second operand has 16 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 15 states have internal predecessors, (36), 8 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) [2024-11-06 23:07:06,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:07:06,347 INFO L93 Difference]: Finished difference Result 161 states and 214 transitions. [2024-11-06 23:07:06,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-06 23:07:06,348 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 15 states have internal predecessors, (36), 8 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) Word has length 67 [2024-11-06 23:07:06,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:07:06,349 INFO L225 Difference]: With dead ends: 161 [2024-11-06 23:07:06,349 INFO L226 Difference]: Without dead ends: 129 [2024-11-06 23:07:06,349 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2024-11-06 23:07:06,350 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 15 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-06 23:07:06,350 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 202 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-06 23:07:06,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-11-06 23:07:06,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 103. [2024-11-06 23:07:06,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 63 states have (on average 1.1746031746031746) internal successors, (74), 68 states have internal predecessors, (74), 28 states have call successors, (28), 11 states have call predecessors, (28), 11 states have return successors, (27), 23 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-06 23:07:06,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 129 transitions. [2024-11-06 23:07:06,365 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 129 transitions. Word has length 67 [2024-11-06 23:07:06,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:07:06,365 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 129 transitions. [2024-11-06 23:07:06,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 15 states have internal predecessors, (36), 8 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) [2024-11-06 23:07:06,366 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 129 transitions. [2024-11-06 23:07:06,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-06 23:07:06,366 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:07:06,367 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:07:06,382 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 23:07:06,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:07:06,568 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:07:06,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:07:06,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1947386788, now seen corresponding path program 1 times [2024-11-06 23:07:06,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:07:06,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021302229] [2024-11-06 23:07:06,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:07:06,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:07:06,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:06,671 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-06 23:07:06,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:06,674 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-06 23:07:06,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:06,676 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-06 23:07:06,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:06,678 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-06 23:07:06,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:06,680 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-06 23:07:06,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:06,682 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-06 23:07:06,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:06,688 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-06 23:07:06,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:06,692 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-06 23:07:06,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:06,702 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-06 23:07:06,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:06,703 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-06 23:07:06,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:06,709 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-06 23:07:06,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:06,710 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 26 proven. 5 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-06 23:07:06,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:07:06,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021302229] [2024-11-06 23:07:06,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021302229] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 23:07:06,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848341058] [2024-11-06 23:07:06,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:07:06,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:07:06,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:07:06,716 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 23:07:06,717 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 23:07:06,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:06,758 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-06 23:07:06,759 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:07:06,871 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2024-11-06 23:07:06,872 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 23:07:06,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848341058] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 23:07:06,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 23:07:06,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2024-11-06 23:07:06,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450802263] [2024-11-06 23:07:06,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 23:07:06,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 23:07:06,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:07:06,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 23:07:06,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-06 23:07:06,873 INFO L87 Difference]: Start difference. First operand 103 states and 129 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-06 23:07:06,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:07:06,942 INFO L93 Difference]: Finished difference Result 140 states and 170 transitions. [2024-11-06 23:07:06,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 23:07:06,944 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 72 [2024-11-06 23:07:06,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:07:06,945 INFO L225 Difference]: With dead ends: 140 [2024-11-06 23:07:06,945 INFO L226 Difference]: Without dead ends: 96 [2024-11-06 23:07:06,945 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-06 23:07:06,945 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 5 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 23:07:06,945 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 79 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 23:07:06,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-06 23:07:06,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 93. [2024-11-06 23:07:06,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 58 states have (on average 1.1206896551724137) internal successors, (65), 61 states have internal predecessors, (65), 23 states have call successors, (23), 11 states have call predecessors, (23), 11 states have return successors, (22), 20 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-06 23:07:06,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 110 transitions. [2024-11-06 23:07:06,969 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 110 transitions. Word has length 72 [2024-11-06 23:07:06,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:07:06,969 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 110 transitions. [2024-11-06 23:07:06,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-06 23:07:06,970 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 110 transitions. [2024-11-06 23:07:06,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-06 23:07:06,970 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:07:06,970 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:07:06,983 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 23:07:07,170 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,SelfDestructingSolverStorable9 [2024-11-06 23:07:07,171 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:07:07,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:07:07,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1728532070, now seen corresponding path program 1 times [2024-11-06 23:07:07,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:07:07,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074900437] [2024-11-06 23:07:07,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:07:07,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:07:07,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:07,459 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-06 23:07:07,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:07,463 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-06 23:07:07,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:07,467 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-06 23:07:07,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:07,469 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-06 23:07:07,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:07,481 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-06 23:07:07,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:07,495 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-06 23:07:07,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:07,511 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-06 23:07:07,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:07,518 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-06 23:07:07,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:07,524 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-06 23:07:07,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:07,529 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-06 23:07:07,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:07,530 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-06 23:07:07,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:07,535 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-06 23:07:07,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:07:07,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074900437] [2024-11-06 23:07:07,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074900437] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 23:07:07,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346661334] [2024-11-06 23:07:07,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:07:07,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:07:07,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:07:07,543 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 23:07:07,544 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 23:07:07,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:07,587 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-06 23:07:07,589 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:07:07,757 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-06 23:07:07,757 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:07:08,095 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-06 23:07:08,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346661334] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 23:07:08,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 23:07:08,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2024-11-06 23:07:08,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335830133] [2024-11-06 23:07:08,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 23:07:08,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-06 23:07:08,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:07:08,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-06 23:07:08,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-11-06 23:07:08,099 INFO L87 Difference]: Start difference. First operand 93 states and 110 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 12 states have internal predecessors, (41), 8 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) [2024-11-06 23:07:08,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:07:08,249 INFO L93 Difference]: Finished difference Result 110 states and 125 transitions. [2024-11-06 23:07:08,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-06 23:07:08,249 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 12 states have internal predecessors, (41), 8 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) Word has length 72 [2024-11-06 23:07:08,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:07:08,250 INFO L225 Difference]: With dead ends: 110 [2024-11-06 23:07:08,251 INFO L226 Difference]: Without dead ends: 79 [2024-11-06 23:07:08,251 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 158 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2024-11-06 23:07:08,252 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 4 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 23:07:08,252 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 219 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 23:07:08,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-06 23:07:08,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2024-11-06 23:07:08,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 50 states have (on average 1.08) internal successors, (54), 52 states have internal predecessors, (54), 18 states have call successors, (18), 10 states have call predecessors, (18), 10 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-06 23:07:08,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 89 transitions. [2024-11-06 23:07:08,269 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 89 transitions. Word has length 72 [2024-11-06 23:07:08,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:07:08,269 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 89 transitions. [2024-11-06 23:07:08,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 12 states have internal predecessors, (41), 8 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) [2024-11-06 23:07:08,269 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 89 transitions. [2024-11-06 23:07:08,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-06 23:07:08,270 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:07:08,270 INFO L215 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:07:08,295 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-06 23:07:08,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:07:08,470 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:07:08,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:07:08,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1193302554, now seen corresponding path program 2 times [2024-11-06 23:07:08,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:07:08,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897577227] [2024-11-06 23:07:08,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:07:08,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:07:08,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:08,913 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-06 23:07:08,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:08,917 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-06 23:07:08,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:08,919 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-06 23:07:08,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:08,922 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-06 23:07:08,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:08,924 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-06 23:07:08,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:08,927 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-06 23:07:08,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:08,928 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-06 23:07:08,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:08,930 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-06 23:07:08,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:08,932 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-06 23:07:08,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:08,934 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-11-06 23:07:08,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:08,936 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-06 23:07:08,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:08,939 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-06 23:07:08,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:08,942 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-11-06 23:07:08,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:08,944 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 30 proven. 20 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-06 23:07:08,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:07:08,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897577227] [2024-11-06 23:07:08,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897577227] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 23:07:08,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794404947] [2024-11-06 23:07:08,945 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 23:07:08,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:07:08,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:07:08,947 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 23:07:08,950 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 23:07:08,995 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 23:07:08,995 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 23:07:08,996 INFO L255 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-06 23:07:08,998 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:07:09,199 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 30 proven. 20 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-06 23:07:09,200 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:07:09,718 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 30 proven. 20 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-06 23:07:09,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794404947] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 23:07:09,718 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 23:07:09,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 22 [2024-11-06 23:07:09,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662181981] [2024-11-06 23:07:09,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 23:07:09,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-06 23:07:09,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:07:09,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-06 23:07:09,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2024-11-06 23:07:09,719 INFO L87 Difference]: Start difference. First operand 79 states and 89 transitions. Second operand has 22 states, 22 states have (on average 2.272727272727273) internal successors, (50), 22 states have internal predecessors, (50), 13 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (39), 12 states have call predecessors, (39), 12 states have call successors, (39) [2024-11-06 23:07:09,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:07:09,922 INFO L93 Difference]: Finished difference Result 126 states and 143 transitions. [2024-11-06 23:07:09,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-06 23:07:09,923 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.272727272727273) internal successors, (50), 22 states have internal predecessors, (50), 13 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (39), 12 states have call predecessors, (39), 12 states have call successors, (39) Word has length 86 [2024-11-06 23:07:09,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:07:09,924 INFO L225 Difference]: With dead ends: 126 [2024-11-06 23:07:09,924 INFO L226 Difference]: Without dead ends: 77 [2024-11-06 23:07:09,924 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 183 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=157, Invalid=599, Unknown=0, NotChecked=0, Total=756 [2024-11-06 23:07:09,926 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 58 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 23:07:09,926 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 266 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 23:07:09,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-06 23:07:09,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2024-11-06 23:07:09,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 49 states have (on average 1.0204081632653061) internal successors, (50), 50 states have internal predecessors, (50), 17 states have call successors, (17), 10 states have call predecessors, (17), 10 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-06 23:07:09,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 83 transitions. [2024-11-06 23:07:09,938 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 83 transitions. Word has length 86 [2024-11-06 23:07:09,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:07:09,939 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 83 transitions. [2024-11-06 23:07:09,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.272727272727273) internal successors, (50), 22 states have internal predecessors, (50), 13 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (39), 12 states have call predecessors, (39), 12 states have call successors, (39) [2024-11-06 23:07:09,940 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 83 transitions. [2024-11-06 23:07:09,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-06 23:07:09,941 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:07:09,941 INFO L215 NwaCegarLoop]: trace histogram [15, 14, 14, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:07:09,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-06 23:07:10,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:07:10,142 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:07:10,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:07:10,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1373298297, now seen corresponding path program 1 times [2024-11-06 23:07:10,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:07:10,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628560212] [2024-11-06 23:07:10,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:07:10,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:07:10,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 23:07:10,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1256675399] [2024-11-06 23:07:10,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:07:10,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:07:10,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:07:10,164 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 23:07:10,165 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 23:07:10,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:10,210 INFO L255 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-06 23:07:10,212 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:07:10,372 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 28 proven. 26 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-06 23:07:10,372 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:07:24,365 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 28 proven. 26 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-06 23:07:24,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:07:24,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628560212] [2024-11-06 23:07:24,365 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 23:07:24,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256675399] [2024-11-06 23:07:24,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256675399] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 23:07:24,365 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 23:07:24,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 12 [2024-11-06 23:07:24,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740815108] [2024-11-06 23:07:24,366 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 23:07:24,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-06 23:07:24,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:07:24,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-06 23:07:24,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-11-06 23:07:24,367 INFO L87 Difference]: Start difference. First operand 77 states and 83 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 8 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 8 states have call predecessors, (28), 8 states have call successors, (28) [2024-11-06 23:07:24,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:07:24,517 INFO L93 Difference]: Finished difference Result 87 states and 91 transitions. [2024-11-06 23:07:24,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-06 23:07:24,517 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 8 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 8 states have call predecessors, (28), 8 states have call successors, (28) Word has length 91 [2024-11-06 23:07:24,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:07:24,518 INFO L225 Difference]: With dead ends: 87 [2024-11-06 23:07:24,518 INFO L226 Difference]: Without dead ends: 85 [2024-11-06 23:07:24,518 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 168 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-11-06 23:07:24,519 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 3 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 23:07:24,519 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 177 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 23:07:24,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-06 23:07:24,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2024-11-06 23:07:24,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 55 states have (on average 1.018181818181818) internal successors, (56), 56 states have internal predecessors, (56), 17 states have call successors, (17), 12 states have call predecessors, (17), 12 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-06 23:07:24,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2024-11-06 23:07:24,528 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 91 [2024-11-06 23:07:24,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:07:24,529 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2024-11-06 23:07:24,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 8 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 8 states have call predecessors, (28), 8 states have call successors, (28) [2024-11-06 23:07:24,529 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2024-11-06 23:07:24,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-06 23:07:24,529 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:07:24,529 INFO L215 NwaCegarLoop]: trace histogram [16, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:07:24,553 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-06 23:07:24,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:07:24,730 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:07:24,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:07:24,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1231859808, now seen corresponding path program 1 times [2024-11-06 23:07:24,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:07:24,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219999647] [2024-11-06 23:07:24,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:07:24,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:07:24,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 23:07:24,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [349484733] [2024-11-06 23:07:24,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:07:24,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:07:24,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:07:24,754 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 23:07:24,757 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 23:07:24,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:24,808 INFO L255 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-06 23:07:24,811 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:07:25,118 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 32 proven. 68 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2024-11-06 23:07:25,118 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:07:25,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:07:25,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219999647] [2024-11-06 23:07:25,797 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 23:07:25,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349484733] [2024-11-06 23:07:25,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349484733] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 23:07:25,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-06 23:07:25,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2024-11-06 23:07:25,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736548465] [2024-11-06 23:07:25,797 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-06 23:07:25,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-06 23:07:25,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:07:25,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-06 23:07:25,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2024-11-06 23:07:25,798 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand has 14 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 6 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2024-11-06 23:07:25,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:07:25,974 INFO L93 Difference]: Finished difference Result 91 states and 94 transitions. [2024-11-06 23:07:25,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-06 23:07:25,975 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 6 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 97 [2024-11-06 23:07:25,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:07:25,975 INFO L225 Difference]: With dead ends: 91 [2024-11-06 23:07:25,975 INFO L226 Difference]: Without dead ends: 87 [2024-11-06 23:07:25,975 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2024-11-06 23:07:25,976 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 3 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 23:07:25,976 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 275 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 23:07:25,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-06 23:07:25,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2024-11-06 23:07:25,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 57 states have (on average 1.0) internal successors, (57), 57 states have internal predecessors, (57), 17 states have call successors, (17), 13 states have call predecessors, (17), 12 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-06 23:07:25,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 90 transitions. [2024-11-06 23:07:25,990 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 90 transitions. Word has length 97 [2024-11-06 23:07:25,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:07:25,990 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 90 transitions. [2024-11-06 23:07:25,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 6 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2024-11-06 23:07:25,991 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 90 transitions. [2024-11-06 23:07:25,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-06 23:07:25,991 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:07:25,991 INFO L215 NwaCegarLoop]: trace histogram [17, 16, 16, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:07:26,004 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 23:07:26,195 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,SelfDestructingSolverStorable13 [2024-11-06 23:07:26,195 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:07:26,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:07:26,196 INFO L85 PathProgramCache]: Analyzing trace with hash -930866627, now seen corresponding path program 1 times [2024-11-06 23:07:26,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:07:26,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459480879] [2024-11-06 23:07:26,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:07:26,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:07:26,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:26,475 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-06 23:07:26,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:26,478 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-06 23:07:26,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:26,480 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-06 23:07:26,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:26,482 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-06 23:07:26,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:26,485 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-06 23:07:26,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:26,489 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-06 23:07:26,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:26,491 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-06 23:07:26,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:26,493 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-06 23:07:26,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:26,496 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-06 23:07:26,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:26,499 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-11-06 23:07:26,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:26,501 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-06 23:07:26,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:26,504 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-06 23:07:26,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:26,507 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-11-06 23:07:26,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:26,510 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-11-06 23:07:26,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:26,512 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-11-06 23:07:26,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:26,516 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-11-06 23:07:26,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:26,518 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 32 proven. 28 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-06 23:07:26,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:07:26,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459480879] [2024-11-06 23:07:26,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459480879] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 23:07:26,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094018901] [2024-11-06 23:07:26,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:07:26,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:07:26,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:07:26,521 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 23:07:26,525 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 23:07:26,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:26,583 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-06 23:07:26,585 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:07:26,900 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 34 proven. 71 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-11-06 23:07:26,900 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:07:28,158 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 34 proven. 71 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-11-06 23:07:28,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094018901] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 23:07:28,159 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 23:07:28,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 15, 14] total 30 [2024-11-06 23:07:28,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730675550] [2024-11-06 23:07:28,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 23:07:28,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-06 23:07:28,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:07:28,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-06 23:07:28,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=720, Unknown=0, NotChecked=0, Total=870 [2024-11-06 23:07:28,161 INFO L87 Difference]: Start difference. First operand 87 states and 90 transitions. Second operand has 30 states, 30 states have (on average 2.033333333333333) internal successors, (61), 27 states have internal predecessors, (61), 17 states have call successors, (49), 3 states have call predecessors, (49), 2 states have return successors, (47), 17 states have call predecessors, (47), 17 states have call successors, (47) [2024-11-06 23:07:28,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:07:28,425 INFO L93 Difference]: Finished difference Result 91 states and 93 transitions. [2024-11-06 23:07:28,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-06 23:07:28,425 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.033333333333333) internal successors, (61), 27 states have internal predecessors, (61), 17 states have call successors, (49), 3 states have call predecessors, (49), 2 states have return successors, (47), 17 states have call predecessors, (47), 17 states have call successors, (47) Word has length 102 [2024-11-06 23:07:28,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:07:28,425 INFO L225 Difference]: With dead ends: 91 [2024-11-06 23:07:28,425 INFO L226 Difference]: Without dead ends: 0 [2024-11-06 23:07:28,426 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=199, Invalid=923, Unknown=0, NotChecked=0, Total=1122 [2024-11-06 23:07:28,426 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 9 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 23:07:28,426 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 355 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 23:07:28,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-06 23:07:28,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-06 23:07:28,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 23:07:28,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-06 23:07:28,427 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 102 [2024-11-06 23:07:28,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:07:28,427 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-06 23:07:28,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.033333333333333) internal successors, (61), 27 states have internal predecessors, (61), 17 states have call successors, (49), 3 states have call predecessors, (49), 2 states have return successors, (47), 17 states have call predecessors, (47), 17 states have call successors, (47) [2024-11-06 23:07:28,427 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-06 23:07:28,427 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-06 23:07:28,429 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-06 23:07:28,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-06 23:07:28,633 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,SelfDestructingSolverStorable14 [2024-11-06 23:07:28,635 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:07:28,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-06 23:07:29,144 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-06 23:07:29,161 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 11:07:29 BoogieIcfgContainer [2024-11-06 23:07:29,161 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-06 23:07:29,162 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-06 23:07:29,162 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-06 23:07:29,162 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-06 23:07:29,162 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:06:59" (3/4) ... [2024-11-06 23:07:29,164 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-06 23:07:29,168 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-06 23:07:29,171 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2024-11-06 23:07:29,172 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-11-06 23:07:29,172 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-06 23:07:29,172 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-06 23:07:29,172 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-06 23:07:29,225 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-06 23:07:29,226 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-06 23:07:29,226 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-06 23:07:29,226 INFO L158 Benchmark]: Toolchain (without parser) took 30415.75ms. Allocated memory was 117.4MB in the beginning and 268.4MB in the end (delta: 151.0MB). Free memory was 94.1MB in the beginning and 107.0MB in the end (delta: -12.9MB). Peak memory consumption was 132.9MB. Max. memory is 16.1GB. [2024-11-06 23:07:29,226 INFO L158 Benchmark]: CDTParser took 0.52ms. Allocated memory is still 83.9MB. Free memory is still 48.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-06 23:07:29,227 INFO L158 Benchmark]: CACSL2BoogieTranslator took 144.12ms. Allocated memory is still 117.4MB. Free memory was 93.9MB in the beginning and 82.8MB in the end (delta: 11.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-06 23:07:29,227 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.17ms. Allocated memory is still 117.4MB. Free memory was 82.8MB in the beginning and 81.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-06 23:07:29,227 INFO L158 Benchmark]: Boogie Preprocessor took 26.17ms. Allocated memory is still 117.4MB. Free memory was 81.6MB in the beginning and 80.4MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-06 23:07:29,227 INFO L158 Benchmark]: RCFGBuilder took 248.35ms. Allocated memory is still 117.4MB. Free memory was 80.4MB in the beginning and 69.6MB in the end (delta: 10.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-06 23:07:29,228 INFO L158 Benchmark]: TraceAbstraction took 29898.31ms. Allocated memory was 117.4MB in the beginning and 268.4MB in the end (delta: 151.0MB). Free memory was 69.0MB in the beginning and 112.3MB in the end (delta: -43.3MB). Peak memory consumption was 107.8MB. Max. memory is 16.1GB. [2024-11-06 23:07:29,228 INFO L158 Benchmark]: Witness Printer took 64.05ms. Allocated memory is still 268.4MB. Free memory was 112.3MB in the beginning and 107.0MB in the end (delta: 5.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-06 23:07:29,229 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52ms. Allocated memory is still 83.9MB. Free memory is still 48.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 144.12ms. Allocated memory is still 117.4MB. Free memory was 93.9MB in the beginning and 82.8MB in the end (delta: 11.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.17ms. Allocated memory is still 117.4MB. Free memory was 82.8MB in the beginning and 81.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 26.17ms. Allocated memory is still 117.4MB. Free memory was 81.6MB in the beginning and 80.4MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 248.35ms. Allocated memory is still 117.4MB. Free memory was 80.4MB in the beginning and 69.6MB in the end (delta: 10.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 29898.31ms. Allocated memory was 117.4MB in the beginning and 268.4MB in the end (delta: 151.0MB). Free memory was 69.0MB in the beginning and 112.3MB in the end (delta: -43.3MB). Peak memory consumption was 107.8MB. Max. memory is 16.1GB. * Witness Printer took 64.05ms. Allocated memory is still 268.4MB. Free memory was 112.3MB in the beginning and 107.0MB in the end (delta: 5.2MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 29.3s, OverallIterations: 15, TraceHistogramMax: 17, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 205 SdHoareTripleChecker+Valid, 2.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 168 mSDsluCounter, 2289 SdHoareTripleChecker+Invalid, 2.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1845 mSDsCounter, 228 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1871 IncrementalHoareTripleChecker+Invalid, 2099 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 228 mSolverCounterUnsat, 444 mSDtfsCounter, 1871 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1469 GetRequests, 1283 SyntacticMatches, 10 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 677 ImplicationChecksByTransitivity, 5.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=106occurred in iteration=8, InterpolantAutomatonStates: 122, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 15 MinimizatonAttempts, 47 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 22.1s InterpolantComputationTime, 1522 NumberOfCodeBlocks, 1522 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 1639 ConstructedInterpolants, 0 QuantifiedInterpolants, 18203 SizeOfPredicates, 22 NumberOfNonLiveVariables, 1898 ConjunctsInSsa, 273 ConjunctsInUnsatCore, 27 InterpolantComputations, 7 PerfectInterpolantSequences, 5675/6189 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: ((((((((((d == 1) && (p == 1)) && (q == 1)) && (((long long) r + 1) == A)) && (B == 1)) || (((((d == 1) && (p == 1)) && (q == 0)) && (A == r)) && (B == 1))) || ((((((2 == A) && (2 == p)) && (r == 0)) && (2 == q)) && (B == 1)) && (2 == d))) || ((((((d == 1) && (p == 1)) && (2 == A)) && (r == 0)) && (2 == q)) && (B == 1))) || ((((((p == 4) && (2 == A)) && (q == 0)) && (d == 4)) && (2 == r)) && (B == 1))) || ((((((2 == p) && (q == 0)) && (A == r)) && (1 <= r)) && (B == 1)) && (2 == d))) - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (((((((((2 == p) && (q == 0)) && (A <= 2)) && (A == r)) && (1 <= r)) && (B == 1)) && (2 == d)) || (((((((d == 1) && (p == 1)) && (q == 0)) && (A <= 2)) && (A == r)) && (B == 1)) && (0 <= A))) || ((((((p == 4) && (2 == A)) && (q == 0)) && (d == 4)) && (2 == r)) && (B == 1))) - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (cond != 0) Ensures: (cond != 0) RESULT: Ultimate proved your program to be correct! [2024-11-06 23:07:29,259 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE