./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4f9af400 extending candidate: java ['java'] extending candidate: /usr/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/oracle-jdk-bin-*/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/openjdk-*/bin/java ['java', '/usr/bin/java'] extending candidate: /usr/lib/jvm/java-*-openjdk-amd64/bin/java ['java', '/usr/bin/java', '/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java', '/usr/lib/jvm/java-17-openjdk-amd64/bin/java', '/usr/lib/jvm/java-11-openjdk-amd64/bin/java', '/usr/lib/jvm/java-1.17.0-openjdk-amd64/bin/java'] ['/root/.sdkman/candidates/java/21.0.5-tem/bin/java', '-Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config', '-Xmx15G', '-Xms4m', '-jar', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar', '-data', '@noDefault', '-ultimatedata', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data', '-tc', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml', '-i', '../sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c', '-s', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf', '--cacsl2boogietranslator.entry.function', 'main', '--witnessprinter.witness.directory', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux', '--witnessprinter.witness.filename', 'witness', '--witnessprinter.write.witness.besides.input.file', 'false', '--witnessprinter.graph.data.specification', 'CHECK( init(main()), LTL(G ! call(reach_error())) )\n\n', '--witnessprinter.graph.data.producer', 'Automizer', '--witnessprinter.graph.data.architecture', '32bit', '--witnessprinter.graph.data.programhash', '95f89ee6bcff8f17eb3e93b344abecdfb8ddea0894d1b25afafccf6235d7ced6'] Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 95f89ee6bcff8f17eb3e93b344abecdfb8ddea0894d1b25afafccf6235d7ced6 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-06 18:50:06,656 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 18:50:06,735 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-06 18:50:06,742 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 18:50:06,745 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 18:50:06,772 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 18:50:06,775 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 18:50:06,776 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 18:50:06,776 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 18:50:06,776 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 18:50:06,776 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 18:50:06,776 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 18:50:06,777 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 18:50:06,777 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 18:50:06,777 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 18:50:06,777 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 18:50:06,777 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 18:50:06,777 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-06 18:50:06,778 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-06 18:50:06,778 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-06 18:50:06,778 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 18:50:06,778 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 18:50:06,778 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 18:50:06,778 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 18:50:06,778 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 18:50:06,779 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-06 18:50:06,779 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 18:50:06,779 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 18:50:06,779 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 18:50:06,779 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 18:50:06,779 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 18:50:06,779 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 18:50:06,779 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 18:50:06,780 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 18:50:06,780 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 18:50:06,780 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 18:50:06,780 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-06 18:50:06,780 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-06 18:50:06,780 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 18:50:06,780 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 18:50:06,780 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 18:50:06,781 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 18:50:06,781 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 -> 95f89ee6bcff8f17eb3e93b344abecdfb8ddea0894d1b25afafccf6235d7ced6 [2024-11-06 18:50:07,047 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 18:50:07,058 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 18:50:07,060 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 18:50:07,062 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 18:50:07,062 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 18:50:07,063 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c [2024-11-06 18:50:08,374 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 18:50:08,620 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 18:50:08,621 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c [2024-11-06 18:50:08,629 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0fda4ab88/6aa0c6de66894e46bb44c6895f1ec609/FLAGb3ac4a8ce [2024-11-06 18:50:08,647 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0fda4ab88/6aa0c6de66894e46bb44c6895f1ec609 [2024-11-06 18:50:08,650 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 18:50:08,651 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-06 18:50:08,653 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 18:50:08,653 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 18:50:08,660 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 18:50:08,661 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:50:08" (1/1) ... [2024-11-06 18:50:08,662 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17c209e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:50:08, skipping insertion in model container [2024-11-06 18:50:08,662 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:50:08" (1/1) ... [2024-11-06 18:50:08,679 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 18:50:08,810 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c[728,741] [2024-11-06 18:50:08,860 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 18:50:08,872 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 18:50:08,881 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c[728,741] [2024-11-06 18:50:08,910 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 18:50:08,924 INFO L204 MainTranslator]: Completed translation [2024-11-06 18:50:08,925 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:50:08 WrapperNode [2024-11-06 18:50:08,925 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 18:50:08,926 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 18:50:08,926 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 18:50:08,926 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 18:50:08,931 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:50:08" (1/1) ... [2024-11-06 18:50:08,940 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:50:08" (1/1) ... [2024-11-06 18:50:08,958 INFO L138 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 147 [2024-11-06 18:50:08,959 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 18:50:08,960 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 18:50:08,960 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 18:50:08,960 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 18:50:08,967 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:50:08" (1/1) ... [2024-11-06 18:50:08,968 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:50:08" (1/1) ... [2024-11-06 18:50:08,970 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:50:08" (1/1) ... [2024-11-06 18:50:08,993 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-06 18:50:08,994 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:50:08" (1/1) ... [2024-11-06 18:50:08,994 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:50:08" (1/1) ... [2024-11-06 18:50:08,998 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:50:08" (1/1) ... [2024-11-06 18:50:09,003 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:50:08" (1/1) ... [2024-11-06 18:50:09,005 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:50:08" (1/1) ... [2024-11-06 18:50:09,006 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:50:08" (1/1) ... [2024-11-06 18:50:09,007 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 18:50:09,012 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 18:50:09,012 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 18:50:09,012 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 18:50:09,013 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:50:08" (1/1) ... [2024-11-06 18:50:09,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 18:50:09,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:50:09,041 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-06 18:50:09,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-06 18:50:09,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 18:50:09,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-06 18:50:09,066 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2024-11-06 18:50:09,066 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2024-11-06 18:50:09,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 18:50:09,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 18:50:09,067 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-06 18:50:09,067 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-06 18:50:09,135 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 18:50:09,136 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 18:50:09,442 INFO L? ?]: Removed 66 outVars from TransFormulas that were not future-live. [2024-11-06 18:50:09,442 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 18:50:09,454 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 18:50:09,456 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-06 18:50:09,456 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:50:09 BoogieIcfgContainer [2024-11-06 18:50:09,457 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 18:50:09,459 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 18:50:09,462 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 18:50:09,467 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 18:50:09,467 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 06:50:08" (1/3) ... [2024-11-06 18:50:09,467 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ba8d26d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:50:09, skipping insertion in model container [2024-11-06 18:50:09,468 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:50:08" (2/3) ... [2024-11-06 18:50:09,468 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ba8d26d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:50:09, skipping insertion in model container [2024-11-06 18:50:09,468 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:50:09" (3/3) ... [2024-11-06 18:50:09,469 INFO L112 eAbstractionObserver]: Analyzing ICFG soft_float_3a.c.cil.c [2024-11-06 18:50:09,483 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 18:50:09,483 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-06 18:50:09,542 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 18:50:09,553 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;@9868382, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 18:50:09,555 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-06 18:50:09,560 INFO L276 IsEmpty]: Start isEmpty. Operand has 74 states, 65 states have (on average 1.5538461538461539) internal successors, (101), 67 states have internal predecessors, (101), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-06 18:50:09,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-06 18:50:09,569 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:09,570 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:09,570 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:09,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:09,574 INFO L85 PathProgramCache]: Analyzing trace with hash 464012710, now seen corresponding path program 1 times [2024-11-06 18:50:09,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:09,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581541061] [2024-11-06 18:50:09,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:09,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:09,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:09,868 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:09,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:09,883 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:09,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:09,894 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-06 18:50:09,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:09,902 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-06 18:50:09,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:09,916 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-06 18:50:09,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:09,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581541061] [2024-11-06 18:50:09,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581541061] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:50:09,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:50:09,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 18:50:09,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52569834] [2024-11-06 18:50:09,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:50:09,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:50:09,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:09,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:50:09,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 18:50:09,946 INFO L87 Difference]: Start difference. First operand has 74 states, 65 states have (on average 1.5538461538461539) internal successors, (101), 67 states have internal predecessors, (101), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-06 18:50:09,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:09,992 INFO L93 Difference]: Finished difference Result 146 states and 225 transitions. [2024-11-06 18:50:09,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:50:09,994 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 41 [2024-11-06 18:50:09,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:10,001 INFO L225 Difference]: With dead ends: 146 [2024-11-06 18:50:10,002 INFO L226 Difference]: Without dead ends: 68 [2024-11-06 18:50:10,006 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 18:50:10,008 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 0 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:10,009 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 201 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 18:50:10,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-06 18:50:10,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2024-11-06 18:50:10,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 61 states have (on average 1.4262295081967213) internal successors, (87), 61 states have internal predecessors, (87), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-06 18:50:10,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 96 transitions. [2024-11-06 18:50:10,052 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 96 transitions. Word has length 41 [2024-11-06 18:50:10,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:10,054 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 96 transitions. [2024-11-06 18:50:10,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-06 18:50:10,054 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 96 transitions. [2024-11-06 18:50:10,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-06 18:50:10,057 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:10,058 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:10,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-06 18:50:10,059 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:10,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:10,060 INFO L85 PathProgramCache]: Analyzing trace with hash 48639148, now seen corresponding path program 1 times [2024-11-06 18:50:10,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:10,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292573711] [2024-11-06 18:50:10,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:10,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:10,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:10,235 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:10,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:10,239 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:10,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:10,246 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-06 18:50:10,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:10,253 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-06 18:50:10,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:10,260 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-06 18:50:10,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:10,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292573711] [2024-11-06 18:50:10,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292573711] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:50:10,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:50:10,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-06 18:50:10,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675564885] [2024-11-06 18:50:10,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:50:10,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 18:50:10,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:10,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 18:50:10,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-06 18:50:10,263 INFO L87 Difference]: Start difference. First operand 68 states and 96 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-06 18:50:10,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:10,285 INFO L93 Difference]: Finished difference Result 78 states and 107 transitions. [2024-11-06 18:50:10,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 18:50:10,285 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 43 [2024-11-06 18:50:10,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:10,286 INFO L225 Difference]: With dead ends: 78 [2024-11-06 18:50:10,286 INFO L226 Difference]: Without dead ends: 68 [2024-11-06 18:50:10,287 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-06 18:50:10,287 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 0 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:10,287 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 280 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 18:50:10,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-06 18:50:10,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2024-11-06 18:50:10,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 61 states have (on average 1.4098360655737705) internal successors, (86), 61 states have internal predecessors, (86), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-06 18:50:10,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 95 transitions. [2024-11-06 18:50:10,293 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 95 transitions. Word has length 43 [2024-11-06 18:50:10,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:10,294 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 95 transitions. [2024-11-06 18:50:10,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-06 18:50:10,294 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 95 transitions. [2024-11-06 18:50:10,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-06 18:50:10,295 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:10,295 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:10,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-06 18:50:10,295 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:10,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:10,296 INFO L85 PathProgramCache]: Analyzing trace with hash -760707478, now seen corresponding path program 1 times [2024-11-06 18:50:10,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:10,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277694333] [2024-11-06 18:50:10,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:10,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:10,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:10,407 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:10,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:10,414 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:10,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:10,482 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-06 18:50:10,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:10,487 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-06 18:50:10,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:10,491 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-06 18:50:10,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:10,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277694333] [2024-11-06 18:50:10,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277694333] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:50:10,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990378900] [2024-11-06 18:50:10,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:10,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:10,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:50:10,494 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:50:10,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-06 18:50:10,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:10,574 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-06 18:50:10,578 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:50:10,622 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-06 18:50:10,622 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 18:50:10,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990378900] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:50:10,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 18:50:10,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-06 18:50:10,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014375924] [2024-11-06 18:50:10,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:50:10,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 18:50:10,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:10,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 18:50:10,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-06 18:50:10,624 INFO L87 Difference]: Start difference. First operand 68 states and 95 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:50:10,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:10,749 INFO L93 Difference]: Finished difference Result 154 states and 220 transitions. [2024-11-06 18:50:10,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 18:50:10,750 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 43 [2024-11-06 18:50:10,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:10,752 INFO L225 Difference]: With dead ends: 154 [2024-11-06 18:50:10,754 INFO L226 Difference]: Without dead ends: 89 [2024-11-06 18:50:10,755 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-06 18:50:10,756 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 21 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:10,757 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 219 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:50:10,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-06 18:50:10,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 81. [2024-11-06 18:50:10,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 73 states have (on average 1.3972602739726028) internal successors, (102), 73 states have internal predecessors, (102), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-06 18:50:10,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 113 transitions. [2024-11-06 18:50:10,775 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 113 transitions. Word has length 43 [2024-11-06 18:50:10,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:10,775 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 113 transitions. [2024-11-06 18:50:10,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:50:10,775 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 113 transitions. [2024-11-06 18:50:10,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-06 18:50:10,776 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:10,777 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:10,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-06 18:50:10,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:10,984 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:10,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:10,984 INFO L85 PathProgramCache]: Analyzing trace with hash 753932532, now seen corresponding path program 1 times [2024-11-06 18:50:10,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:10,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146361882] [2024-11-06 18:50:10,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:10,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:10,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:11,066 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:11,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:11,070 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:11,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:11,107 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-06 18:50:11,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:11,113 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-06 18:50:11,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:11,119 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-06 18:50:11,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:11,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146361882] [2024-11-06 18:50:11,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146361882] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:50:11,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867885431] [2024-11-06 18:50:11,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:11,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:11,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:50:11,122 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:50:11,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-06 18:50:11,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:11,203 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-06 18:50:11,205 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:50:11,245 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-06 18:50:11,245 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 18:50:11,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867885431] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:50:11,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 18:50:11,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-06 18:50:11,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386131175] [2024-11-06 18:50:11,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:50:11,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 18:50:11,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:11,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 18:50:11,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-06 18:50:11,250 INFO L87 Difference]: Start difference. First operand 81 states and 113 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:50:11,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:11,317 INFO L93 Difference]: Finished difference Result 170 states and 240 transitions. [2024-11-06 18:50:11,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 18:50:11,317 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 46 [2024-11-06 18:50:11,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:11,319 INFO L225 Difference]: With dead ends: 170 [2024-11-06 18:50:11,321 INFO L226 Difference]: Without dead ends: 96 [2024-11-06 18:50:11,321 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-06 18:50:11,322 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 15 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:11,322 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 235 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:50:11,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-06 18:50:11,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 86. [2024-11-06 18:50:11,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 77 states have (on average 1.3896103896103895) internal successors, (107), 78 states have internal predecessors, (107), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-06 18:50:11,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 120 transitions. [2024-11-06 18:50:11,338 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 120 transitions. Word has length 46 [2024-11-06 18:50:11,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:11,338 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 120 transitions. [2024-11-06 18:50:11,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:50:11,338 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 120 transitions. [2024-11-06 18:50:11,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-06 18:50:11,340 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:11,340 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:11,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-06 18:50:11,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:11,544 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:11,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:11,545 INFO L85 PathProgramCache]: Analyzing trace with hash -518829479, now seen corresponding path program 1 times [2024-11-06 18:50:11,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:11,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692227776] [2024-11-06 18:50:11,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:11,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:11,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:11,616 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:11,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:11,622 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:11,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:11,655 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-06 18:50:11,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:11,658 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-06 18:50:11,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:11,662 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-06 18:50:11,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:11,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692227776] [2024-11-06 18:50:11,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692227776] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:50:11,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132331954] [2024-11-06 18:50:11,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:11,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:11,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:50:11,667 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:50:11,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-06 18:50:11,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:11,730 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-06 18:50:11,731 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:50:11,761 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-06 18:50:11,761 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 18:50:11,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132331954] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:50:11,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 18:50:11,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-06 18:50:11,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395071469] [2024-11-06 18:50:11,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:50:11,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 18:50:11,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:11,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 18:50:11,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-06 18:50:11,764 INFO L87 Difference]: Start difference. First operand 86 states and 120 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:50:11,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:11,818 INFO L93 Difference]: Finished difference Result 176 states and 249 transitions. [2024-11-06 18:50:11,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 18:50:11,819 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 47 [2024-11-06 18:50:11,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:11,820 INFO L225 Difference]: With dead ends: 176 [2024-11-06 18:50:11,820 INFO L226 Difference]: Without dead ends: 97 [2024-11-06 18:50:11,820 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-06 18:50:11,821 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 16 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:11,821 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 237 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 18:50:11,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-06 18:50:11,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 87. [2024-11-06 18:50:11,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 78 states have (on average 1.3974358974358974) internal successors, (109), 79 states have internal predecessors, (109), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-06 18:50:11,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 122 transitions. [2024-11-06 18:50:11,837 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 122 transitions. Word has length 47 [2024-11-06 18:50:11,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:11,837 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 122 transitions. [2024-11-06 18:50:11,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:50:11,837 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 122 transitions. [2024-11-06 18:50:11,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-06 18:50:11,838 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:11,838 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:11,854 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-06 18:50:12,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:12,039 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:12,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:12,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1747045464, now seen corresponding path program 1 times [2024-11-06 18:50:12,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:12,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264022123] [2024-11-06 18:50:12,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:12,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:12,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:12,102 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:12,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:12,106 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:12,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:12,154 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-06 18:50:12,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:12,157 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-06 18:50:12,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:12,160 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-06 18:50:12,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:12,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264022123] [2024-11-06 18:50:12,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264022123] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:50:12,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424959515] [2024-11-06 18:50:12,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:12,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:12,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:50:12,162 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:50:12,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-06 18:50:12,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:12,229 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-06 18:50:12,231 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:50:12,280 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-06 18:50:12,281 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:50:12,410 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-06 18:50:12,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424959515] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:50:12,411 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:50:12,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-06 18:50:12,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890383465] [2024-11-06 18:50:12,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:50:12,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-06 18:50:12,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:12,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-06 18:50:12,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-06 18:50:12,412 INFO L87 Difference]: Start difference. First operand 87 states and 122 transitions. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-06 18:50:12,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:12,557 INFO L93 Difference]: Finished difference Result 227 states and 328 transitions. [2024-11-06 18:50:12,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-06 18:50:12,558 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 49 [2024-11-06 18:50:12,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:12,559 INFO L225 Difference]: With dead ends: 227 [2024-11-06 18:50:12,559 INFO L226 Difference]: Without dead ends: 147 [2024-11-06 18:50:12,560 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-11-06 18:50:12,560 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 88 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:12,560 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 619 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:50:12,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-11-06 18:50:12,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 101. [2024-11-06 18:50:12,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 92 states have (on average 1.434782608695652) internal successors, (132), 93 states have internal predecessors, (132), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-06 18:50:12,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 145 transitions. [2024-11-06 18:50:12,575 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 145 transitions. Word has length 49 [2024-11-06 18:50:12,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:12,576 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 145 transitions. [2024-11-06 18:50:12,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-06 18:50:12,576 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 145 transitions. [2024-11-06 18:50:12,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-06 18:50:12,578 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:12,578 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:12,596 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-06 18:50:12,778 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,SelfDestructingSolverStorable5 [2024-11-06 18:50:12,779 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:12,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:12,779 INFO L85 PathProgramCache]: Analyzing trace with hash 134147808, now seen corresponding path program 1 times [2024-11-06 18:50:12,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:12,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903295871] [2024-11-06 18:50:12,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:12,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:12,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:12,848 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:12,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:12,851 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:12,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:12,893 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-06 18:50:12,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:12,897 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-06 18:50:12,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:12,900 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-06 18:50:12,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:12,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903295871] [2024-11-06 18:50:12,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903295871] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:50:12,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602415605] [2024-11-06 18:50:12,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:12,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:12,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:50:12,902 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:50:12,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-06 18:50:12,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:12,970 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-06 18:50:12,972 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:50:13,008 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-06 18:50:13,009 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:50:13,105 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-06 18:50:13,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602415605] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:50:13,106 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:50:13,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-06 18:50:13,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264817256] [2024-11-06 18:50:13,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:50:13,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-06 18:50:13,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:13,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-06 18:50:13,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-06 18:50:13,109 INFO L87 Difference]: Start difference. First operand 101 states and 145 transitions. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-06 18:50:13,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:13,219 INFO L93 Difference]: Finished difference Result 246 states and 360 transitions. [2024-11-06 18:50:13,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-06 18:50:13,220 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 50 [2024-11-06 18:50:13,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:13,222 INFO L225 Difference]: With dead ends: 246 [2024-11-06 18:50:13,224 INFO L226 Difference]: Without dead ends: 152 [2024-11-06 18:50:13,224 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-11-06 18:50:13,225 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 122 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:13,225 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 372 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:50:13,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-11-06 18:50:13,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 110. [2024-11-06 18:50:13,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 101 states have (on average 1.4554455445544554) internal successors, (147), 102 states have internal predecessors, (147), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-06 18:50:13,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 160 transitions. [2024-11-06 18:50:13,239 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 160 transitions. Word has length 50 [2024-11-06 18:50:13,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:13,239 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 160 transitions. [2024-11-06 18:50:13,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-06 18:50:13,240 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 160 transitions. [2024-11-06 18:50:13,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-06 18:50:13,240 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:13,241 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:13,256 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-06 18:50:13,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:13,441 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:13,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:13,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1962941342, now seen corresponding path program 1 times [2024-11-06 18:50:13,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:13,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249840961] [2024-11-06 18:50:13,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:13,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:13,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:13,479 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:13,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:13,485 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:13,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:13,506 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-06 18:50:13,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:13,509 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-06 18:50:13,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:13,511 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-06 18:50:13,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:13,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249840961] [2024-11-06 18:50:13,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249840961] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:50:13,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77647014] [2024-11-06 18:50:13,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:13,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:13,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:50:13,514 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:50:13,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-06 18:50:13,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:13,575 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-06 18:50:13,577 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:50:13,585 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-06 18:50:13,586 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 18:50:13,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77647014] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:50:13,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 18:50:13,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 3 [2024-11-06 18:50:13,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141698043] [2024-11-06 18:50:13,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:50:13,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:50:13,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:13,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:50:13,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 18:50:13,587 INFO L87 Difference]: Start difference. First operand 110 states and 160 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:50:13,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:13,620 INFO L93 Difference]: Finished difference Result 222 states and 330 transitions. [2024-11-06 18:50:13,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:50:13,621 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 51 [2024-11-06 18:50:13,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:13,622 INFO L225 Difference]: With dead ends: 222 [2024-11-06 18:50:13,622 INFO L226 Difference]: Without dead ends: 119 [2024-11-06 18:50:13,622 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 18:50:13,622 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 5 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:13,623 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 170 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 18:50:13,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-11-06 18:50:13,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 112. [2024-11-06 18:50:13,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 103 states have (on average 1.4466019417475728) internal successors, (149), 104 states have internal predecessors, (149), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-06 18:50:13,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 162 transitions. [2024-11-06 18:50:13,631 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 162 transitions. Word has length 51 [2024-11-06 18:50:13,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:13,631 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 162 transitions. [2024-11-06 18:50:13,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:50:13,631 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 162 transitions. [2024-11-06 18:50:13,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-06 18:50:13,632 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:13,632 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:13,648 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-06 18:50:13,832 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,SelfDestructingSolverStorable7 [2024-11-06 18:50:13,833 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:13,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:13,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1486287046, now seen corresponding path program 1 times [2024-11-06 18:50:13,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:13,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446091431] [2024-11-06 18:50:13,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:13,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:13,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:13,859 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:13,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:13,865 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:13,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:13,882 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-06 18:50:13,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:13,887 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-06 18:50:13,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:13,893 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-06 18:50:13,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:13,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446091431] [2024-11-06 18:50:13,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446091431] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:50:13,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255468837] [2024-11-06 18:50:13,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:13,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:13,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:50:13,897 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:50:13,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-06 18:50:13,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:13,959 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-06 18:50:13,960 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:50:13,964 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-06 18:50:13,964 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 18:50:13,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255468837] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:50:13,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 18:50:13,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 3 [2024-11-06 18:50:13,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253281975] [2024-11-06 18:50:13,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:50:13,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:50:13,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:13,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:50:13,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 18:50:13,966 INFO L87 Difference]: Start difference. First operand 112 states and 162 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:50:14,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:14,011 INFO L93 Difference]: Finished difference Result 220 states and 324 transitions. [2024-11-06 18:50:14,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:50:14,011 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 51 [2024-11-06 18:50:14,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:14,012 INFO L225 Difference]: With dead ends: 220 [2024-11-06 18:50:14,012 INFO L226 Difference]: Without dead ends: 115 [2024-11-06 18:50:14,013 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 18:50:14,013 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 8 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:14,013 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 169 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 18:50:14,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-06 18:50:14,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 108. [2024-11-06 18:50:14,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 99 states have (on average 1.4242424242424243) internal successors, (141), 100 states have internal predecessors, (141), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-06 18:50:14,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 154 transitions. [2024-11-06 18:50:14,029 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 154 transitions. Word has length 51 [2024-11-06 18:50:14,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:14,029 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 154 transitions. [2024-11-06 18:50:14,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:50:14,029 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 154 transitions. [2024-11-06 18:50:14,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-06 18:50:14,030 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:14,030 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:14,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-06 18:50:14,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:14,235 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:14,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:14,235 INFO L85 PathProgramCache]: Analyzing trace with hash -860981081, now seen corresponding path program 1 times [2024-11-06 18:50:14,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:14,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559061436] [2024-11-06 18:50:14,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:14,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:14,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:14,303 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:14,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:14,308 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:14,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:14,368 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-06 18:50:14,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:14,371 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-06 18:50:14,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:14,374 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-06 18:50:14,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:14,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559061436] [2024-11-06 18:50:14,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559061436] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:50:14,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530093292] [2024-11-06 18:50:14,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:14,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:14,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:50:14,377 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:50:14,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-06 18:50:14,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:14,444 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-06 18:50:14,446 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:50:14,527 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-06 18:50:14,528 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 18:50:14,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530093292] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:50:14,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 18:50:14,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-06 18:50:14,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084808036] [2024-11-06 18:50:14,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:50:14,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 18:50:14,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:14,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 18:50:14,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-06 18:50:14,530 INFO L87 Difference]: Start difference. First operand 108 states and 154 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:50:14,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:14,612 INFO L93 Difference]: Finished difference Result 223 states and 318 transitions. [2024-11-06 18:50:14,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-06 18:50:14,613 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 52 [2024-11-06 18:50:14,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:14,614 INFO L225 Difference]: With dead ends: 223 [2024-11-06 18:50:14,614 INFO L226 Difference]: Without dead ends: 122 [2024-11-06 18:50:14,614 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-11-06 18:50:14,615 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 21 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:14,615 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 253 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:50:14,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-06 18:50:14,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 109. [2024-11-06 18:50:14,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 100 states have (on average 1.42) internal successors, (142), 101 states have internal predecessors, (142), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-06 18:50:14,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 155 transitions. [2024-11-06 18:50:14,623 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 155 transitions. Word has length 52 [2024-11-06 18:50:14,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:14,623 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 155 transitions. [2024-11-06 18:50:14,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:50:14,623 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 155 transitions. [2024-11-06 18:50:14,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-06 18:50:14,624 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:14,624 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:14,641 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-06 18:50:14,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:14,825 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:14,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:14,826 INFO L85 PathProgramCache]: Analyzing trace with hash 2104408448, now seen corresponding path program 1 times [2024-11-06 18:50:14,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:14,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539928273] [2024-11-06 18:50:14,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:14,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:14,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:14,869 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:14,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:14,872 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:14,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:14,927 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-06 18:50:14,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:14,931 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-06 18:50:14,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:14,934 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-06 18:50:14,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:14,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539928273] [2024-11-06 18:50:14,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539928273] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:50:14,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963400323] [2024-11-06 18:50:14,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:14,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:14,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:50:14,937 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:50:14,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-06 18:50:15,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:15,003 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-06 18:50:15,005 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:50:15,060 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-06 18:50:15,060 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 18:50:15,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963400323] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:50:15,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 18:50:15,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-06 18:50:15,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789084515] [2024-11-06 18:50:15,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:50:15,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:50:15,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:15,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:50:15,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 18:50:15,062 INFO L87 Difference]: Start difference. First operand 109 states and 155 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:50:15,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:15,102 INFO L93 Difference]: Finished difference Result 218 states and 314 transitions. [2024-11-06 18:50:15,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:50:15,103 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 52 [2024-11-06 18:50:15,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:15,104 INFO L225 Difference]: With dead ends: 218 [2024-11-06 18:50:15,104 INFO L226 Difference]: Without dead ends: 116 [2024-11-06 18:50:15,104 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 18:50:15,105 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 6 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:15,105 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 176 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 18:50:15,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-06 18:50:15,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 108. [2024-11-06 18:50:15,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 99 states have (on average 1.4141414141414141) internal successors, (140), 100 states have internal predecessors, (140), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-06 18:50:15,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 153 transitions. [2024-11-06 18:50:15,114 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 153 transitions. Word has length 52 [2024-11-06 18:50:15,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:15,114 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 153 transitions. [2024-11-06 18:50:15,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:50:15,114 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 153 transitions. [2024-11-06 18:50:15,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-06 18:50:15,115 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:15,115 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:15,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-06 18:50:15,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:15,316 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:15,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:15,316 INFO L85 PathProgramCache]: Analyzing trace with hash 77798333, now seen corresponding path program 1 times [2024-11-06 18:50:15,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:15,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098704504] [2024-11-06 18:50:15,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:15,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:15,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:15,363 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:15,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:15,365 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:15,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:15,444 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-06 18:50:15,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:15,448 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-06 18:50:15,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:15,451 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-06 18:50:15,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:15,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098704504] [2024-11-06 18:50:15,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098704504] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:50:15,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150253488] [2024-11-06 18:50:15,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:15,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:15,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:50:15,454 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:50:15,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-06 18:50:15,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:15,527 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-06 18:50:15,529 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:50:15,595 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-06 18:50:15,595 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 18:50:15,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150253488] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:50:15,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 18:50:15,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2024-11-06 18:50:15,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350795885] [2024-11-06 18:50:15,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:50:15,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-06 18:50:15,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:15,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-06 18:50:15,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-06 18:50:15,597 INFO L87 Difference]: Start difference. First operand 108 states and 153 transitions. Second operand has 8 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:50:15,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:15,681 INFO L93 Difference]: Finished difference Result 189 states and 272 transitions. [2024-11-06 18:50:15,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-06 18:50:15,681 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 53 [2024-11-06 18:50:15,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:15,682 INFO L225 Difference]: With dead ends: 189 [2024-11-06 18:50:15,682 INFO L226 Difference]: Without dead ends: 152 [2024-11-06 18:50:15,683 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-06 18:50:15,683 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 49 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:15,683 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 553 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:50:15,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-11-06 18:50:15,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 151. [2024-11-06 18:50:15,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 139 states have (on average 1.3884892086330936) internal successors, (193), 140 states have internal predecessors, (193), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (18), 7 states have call predecessors, (18), 5 states have call successors, (18) [2024-11-06 18:50:15,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 217 transitions. [2024-11-06 18:50:15,699 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 217 transitions. Word has length 53 [2024-11-06 18:50:15,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:15,699 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 217 transitions. [2024-11-06 18:50:15,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:50:15,700 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 217 transitions. [2024-11-06 18:50:15,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-06 18:50:15,701 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:15,702 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:15,718 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-06 18:50:15,905 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,SelfDestructingSolverStorable11 [2024-11-06 18:50:15,905 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:15,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:15,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1291379781, now seen corresponding path program 1 times [2024-11-06 18:50:15,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:15,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319180688] [2024-11-06 18:50:15,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:15,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:15,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:15,952 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:15,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:15,955 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:15,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:16,002 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-06 18:50:16,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:16,005 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-06 18:50:16,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:16,008 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-06 18:50:16,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:16,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319180688] [2024-11-06 18:50:16,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319180688] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:50:16,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566581130] [2024-11-06 18:50:16,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:16,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:16,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:50:16,011 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:50:16,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-06 18:50:16,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:16,075 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-06 18:50:16,076 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:50:16,257 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-06 18:50:16,257 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:50:16,676 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-06 18:50:16,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566581130] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:50:16,677 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:50:16,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 13, 14] total 28 [2024-11-06 18:50:16,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988985252] [2024-11-06 18:50:16,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:50:16,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-06 18:50:16,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:16,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-06 18:50:16,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2024-11-06 18:50:16,679 INFO L87 Difference]: Start difference. First operand 151 states and 217 transitions. Second operand has 28 states, 28 states have (on average 3.1785714285714284) internal successors, (89), 24 states have internal predecessors, (89), 4 states have call successors, (9), 2 states have call predecessors, (9), 6 states have return successors, (10), 8 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-06 18:50:18,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:18,121 INFO L93 Difference]: Finished difference Result 471 states and 725 transitions. [2024-11-06 18:50:18,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-06 18:50:18,121 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.1785714285714284) internal successors, (89), 24 states have internal predecessors, (89), 4 states have call successors, (9), 2 states have call predecessors, (9), 6 states have return successors, (10), 8 states have call predecessors, (10), 4 states have call successors, (10) Word has length 55 [2024-11-06 18:50:18,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:18,123 INFO L225 Difference]: With dead ends: 471 [2024-11-06 18:50:18,123 INFO L226 Difference]: Without dead ends: 291 [2024-11-06 18:50:18,125 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=351, Invalid=2841, Unknown=0, NotChecked=0, Total=3192 [2024-11-06 18:50:18,126 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 241 mSDsluCounter, 1936 mSDsCounter, 0 mSdLazyCounter, 897 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 2048 SdHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:18,126 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 2048 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 897 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-06 18:50:18,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2024-11-06 18:50:18,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 157. [2024-11-06 18:50:18,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 141 states have (on average 1.3475177304964538) internal successors, (190), 143 states have internal predecessors, (190), 9 states have call successors, (9), 3 states have call predecessors, (9), 6 states have return successors, (34), 10 states have call predecessors, (34), 8 states have call successors, (34) [2024-11-06 18:50:18,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 233 transitions. [2024-11-06 18:50:18,143 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 233 transitions. Word has length 55 [2024-11-06 18:50:18,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:18,144 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 233 transitions. [2024-11-06 18:50:18,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.1785714285714284) internal successors, (89), 24 states have internal predecessors, (89), 4 states have call successors, (9), 2 states have call predecessors, (9), 6 states have return successors, (10), 8 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-06 18:50:18,144 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 233 transitions. [2024-11-06 18:50:18,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-06 18:50:18,145 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:18,145 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:18,162 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 18:50:18,346 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,SelfDestructingSolverStorable12 [2024-11-06 18:50:18,347 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:18,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:18,347 INFO L85 PathProgramCache]: Analyzing trace with hash 34290157, now seen corresponding path program 1 times [2024-11-06 18:50:18,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:18,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326334692] [2024-11-06 18:50:18,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:18,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:18,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:18,513 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:18,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:18,516 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:18,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:18,521 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-06 18:50:18,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:18,541 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-06 18:50:18,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:18,545 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-06 18:50:18,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:18,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326334692] [2024-11-06 18:50:18,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326334692] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:50:18,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514730377] [2024-11-06 18:50:18,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:18,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:18,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:50:18,547 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:50:18,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-06 18:50:18,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:18,618 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-06 18:50:18,619 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:50:18,653 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-06 18:50:18,653 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 18:50:18,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514730377] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:50:18,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 18:50:18,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2024-11-06 18:50:18,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350861207] [2024-11-06 18:50:18,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:50:18,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 18:50:18,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:18,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 18:50:18,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-06 18:50:18,656 INFO L87 Difference]: Start difference. First operand 157 states and 233 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-06 18:50:18,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:18,685 INFO L93 Difference]: Finished difference Result 178 states and 255 transitions. [2024-11-06 18:50:18,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 18:50:18,686 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 58 [2024-11-06 18:50:18,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:18,687 INFO L225 Difference]: With dead ends: 178 [2024-11-06 18:50:18,687 INFO L226 Difference]: Without dead ends: 172 [2024-11-06 18:50:18,688 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-06 18:50:18,688 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 0 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:18,688 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 346 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 18:50:18,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-11-06 18:50:18,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2024-11-06 18:50:18,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 156 states have (on average 1.3205128205128205) internal successors, (206), 158 states have internal predecessors, (206), 9 states have call successors, (9), 3 states have call predecessors, (9), 6 states have return successors, (34), 10 states have call predecessors, (34), 8 states have call successors, (34) [2024-11-06 18:50:18,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 249 transitions. [2024-11-06 18:50:18,701 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 249 transitions. Word has length 58 [2024-11-06 18:50:18,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:18,702 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 249 transitions. [2024-11-06 18:50:18,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-06 18:50:18,702 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 249 transitions. [2024-11-06 18:50:18,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-06 18:50:18,703 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:18,703 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:18,719 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-06 18:50:18,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:18,904 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:18,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:18,904 INFO L85 PathProgramCache]: Analyzing trace with hash 91548459, now seen corresponding path program 1 times [2024-11-06 18:50:18,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:18,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866111082] [2024-11-06 18:50:18,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:18,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:18,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:18,974 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:18,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:18,976 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:18,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:18,982 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-06 18:50:18,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:18,984 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-06 18:50:18,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:18,985 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-06 18:50:18,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:18,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866111082] [2024-11-06 18:50:18,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866111082] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:50:18,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:50:18,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-06 18:50:18,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473282052] [2024-11-06 18:50:18,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:50:18,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-06 18:50:18,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:18,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-06 18:50:18,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-06 18:50:18,987 INFO L87 Difference]: Start difference. First operand 172 states and 249 transitions. Second operand has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-06 18:50:19,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:19,020 INFO L93 Difference]: Finished difference Result 178 states and 254 transitions. [2024-11-06 18:50:19,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-06 18:50:19,020 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 58 [2024-11-06 18:50:19,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:19,021 INFO L225 Difference]: With dead ends: 178 [2024-11-06 18:50:19,021 INFO L226 Difference]: Without dead ends: 161 [2024-11-06 18:50:19,022 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-06 18:50:19,022 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 1 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:19,022 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 453 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 18:50:19,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-11-06 18:50:19,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 159. [2024-11-06 18:50:19,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 144 states have (on average 1.3194444444444444) internal successors, (190), 147 states have internal predecessors, (190), 8 states have call successors, (8), 3 states have call predecessors, (8), 6 states have return successors, (28), 8 states have call predecessors, (28), 7 states have call successors, (28) [2024-11-06 18:50:19,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 226 transitions. [2024-11-06 18:50:19,032 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 226 transitions. Word has length 58 [2024-11-06 18:50:19,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:19,033 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 226 transitions. [2024-11-06 18:50:19,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-06 18:50:19,033 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 226 transitions. [2024-11-06 18:50:19,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-06 18:50:19,034 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:19,034 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:19,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-06 18:50:19,034 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:19,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:19,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1233960022, now seen corresponding path program 1 times [2024-11-06 18:50:19,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:19,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157158037] [2024-11-06 18:50:19,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:19,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:19,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:19,117 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:19,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:19,120 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:19,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:19,125 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-06 18:50:19,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:19,151 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-06 18:50:19,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:19,154 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-06 18:50:19,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:19,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157158037] [2024-11-06 18:50:19,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157158037] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:50:19,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595721288] [2024-11-06 18:50:19,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:19,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:19,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:50:19,157 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:50:19,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-06 18:50:19,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:19,224 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-06 18:50:19,226 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:50:19,265 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-06 18:50:19,265 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:50:19,352 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-06 18:50:19,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595721288] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-06 18:50:19,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-06 18:50:19,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 8] total 13 [2024-11-06 18:50:19,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102519851] [2024-11-06 18:50:19,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:50:19,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 18:50:19,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:19,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 18:50:19,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-06 18:50:19,353 INFO L87 Difference]: Start difference. First operand 159 states and 226 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-06 18:50:19,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:19,406 INFO L93 Difference]: Finished difference Result 175 states and 242 transitions. [2024-11-06 18:50:19,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-06 18:50:19,407 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 60 [2024-11-06 18:50:19,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:19,408 INFO L225 Difference]: With dead ends: 175 [2024-11-06 18:50:19,408 INFO L226 Difference]: Without dead ends: 163 [2024-11-06 18:50:19,409 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-11-06 18:50:19,409 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 8 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:19,409 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 253 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 18:50:19,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-11-06 18:50:19,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 160. [2024-11-06 18:50:19,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 145 states have (on average 1.3172413793103448) internal successors, (191), 148 states have internal predecessors, (191), 8 states have call successors, (8), 3 states have call predecessors, (8), 6 states have return successors, (28), 8 states have call predecessors, (28), 7 states have call successors, (28) [2024-11-06 18:50:19,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 227 transitions. [2024-11-06 18:50:19,435 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 227 transitions. Word has length 60 [2024-11-06 18:50:19,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:19,435 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 227 transitions. [2024-11-06 18:50:19,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-06 18:50:19,435 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 227 transitions. [2024-11-06 18:50:19,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-06 18:50:19,439 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:19,439 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:19,457 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-06 18:50:19,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:19,640 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:19,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:19,641 INFO L85 PathProgramCache]: Analyzing trace with hash 647154008, now seen corresponding path program 1 times [2024-11-06 18:50:19,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:19,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247210217] [2024-11-06 18:50:19,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:19,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:19,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:19,716 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:19,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:19,719 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:19,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:19,808 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-06 18:50:19,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:19,810 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-06 18:50:19,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:19,813 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-06 18:50:19,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:19,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247210217] [2024-11-06 18:50:19,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247210217] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:50:19,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765966033] [2024-11-06 18:50:19,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:19,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:19,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:50:19,816 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:50:19,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-06 18:50:19,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:19,881 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-06 18:50:19,882 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:50:20,063 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-06 18:50:20,064 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:50:20,540 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-06 18:50:20,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765966033] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:50:20,540 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:50:20,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 14, 15] total 31 [2024-11-06 18:50:20,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395911077] [2024-11-06 18:50:20,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:50:20,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-06 18:50:20,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:20,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-06 18:50:20,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=844, Unknown=0, NotChecked=0, Total=930 [2024-11-06 18:50:20,542 INFO L87 Difference]: Start difference. First operand 160 states and 227 transitions. Second operand has 31 states, 31 states have (on average 3.2580645161290325) internal successors, (101), 27 states have internal predecessors, (101), 4 states have call successors, (9), 2 states have call predecessors, (9), 6 states have return successors, (10), 8 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-06 18:50:22,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:22,637 INFO L93 Difference]: Finished difference Result 530 states and 823 transitions. [2024-11-06 18:50:22,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-06 18:50:22,638 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.2580645161290325) internal successors, (101), 27 states have internal predecessors, (101), 4 states have call successors, (9), 2 states have call predecessors, (9), 6 states have return successors, (10), 8 states have call predecessors, (10), 4 states have call successors, (10) Word has length 60 [2024-11-06 18:50:22,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:22,641 INFO L225 Difference]: With dead ends: 530 [2024-11-06 18:50:22,641 INFO L226 Difference]: Without dead ends: 343 [2024-11-06 18:50:22,644 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1021 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=595, Invalid=4235, Unknown=0, NotChecked=0, Total=4830 [2024-11-06 18:50:22,644 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 407 mSDsluCounter, 2471 mSDsCounter, 0 mSdLazyCounter, 1384 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 2589 SdHoareTripleChecker+Invalid, 1510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:22,645 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 2589 Invalid, 1510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1384 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-06 18:50:22,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2024-11-06 18:50:22,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 164. [2024-11-06 18:50:22,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 149 states have (on average 1.3288590604026846) internal successors, (198), 152 states have internal predecessors, (198), 8 states have call successors, (8), 3 states have call predecessors, (8), 6 states have return successors, (28), 8 states have call predecessors, (28), 7 states have call successors, (28) [2024-11-06 18:50:22,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 234 transitions. [2024-11-06 18:50:22,661 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 234 transitions. Word has length 60 [2024-11-06 18:50:22,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:22,661 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 234 transitions. [2024-11-06 18:50:22,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.2580645161290325) internal successors, (101), 27 states have internal predecessors, (101), 4 states have call successors, (9), 2 states have call predecessors, (9), 6 states have return successors, (10), 8 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-06 18:50:22,662 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 234 transitions. [2024-11-06 18:50:22,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-06 18:50:22,663 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:22,663 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:22,680 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-06 18:50:22,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-06 18:50:22,868 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:22,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:22,868 INFO L85 PathProgramCache]: Analyzing trace with hash -347975065, now seen corresponding path program 1 times [2024-11-06 18:50:22,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:22,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079582761] [2024-11-06 18:50:22,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:22,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:22,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:22,917 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:22,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:22,918 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:22,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:22,987 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-06 18:50:22,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:22,991 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-06 18:50:22,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:22,993 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 4 proven. 35 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-06 18:50:22,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:22,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079582761] [2024-11-06 18:50:22,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079582761] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:50:22,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935624769] [2024-11-06 18:50:22,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:22,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:22,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:50:22,996 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:50:22,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-06 18:50:23,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:23,060 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-06 18:50:23,062 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:50:23,130 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 25 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-06 18:50:23,131 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:50:23,287 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 4 proven. 35 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-06 18:50:23,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935624769] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:50:23,288 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:50:23,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2024-11-06 18:50:23,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971602565] [2024-11-06 18:50:23,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:50:23,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-06 18:50:23,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:23,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-06 18:50:23,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=244, Unknown=0, NotChecked=0, Total=380 [2024-11-06 18:50:23,289 INFO L87 Difference]: Start difference. First operand 164 states and 234 transitions. Second operand has 20 states, 20 states have (on average 4.65) internal successors, (93), 20 states have internal predecessors, (93), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-06 18:50:23,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:23,452 INFO L93 Difference]: Finished difference Result 405 states and 570 transitions. [2024-11-06 18:50:23,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-06 18:50:23,453 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.65) internal successors, (93), 20 states have internal predecessors, (93), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 62 [2024-11-06 18:50:23,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:23,455 INFO L225 Difference]: With dead ends: 405 [2024-11-06 18:50:23,455 INFO L226 Difference]: Without dead ends: 252 [2024-11-06 18:50:23,456 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=267, Unknown=0, NotChecked=0, Total=420 [2024-11-06 18:50:23,456 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 262 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:23,456 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 535 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:50:23,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2024-11-06 18:50:23,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 178. [2024-11-06 18:50:23,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 163 states have (on average 1.3558282208588956) internal successors, (221), 166 states have internal predecessors, (221), 8 states have call successors, (8), 3 states have call predecessors, (8), 6 states have return successors, (28), 8 states have call predecessors, (28), 7 states have call successors, (28) [2024-11-06 18:50:23,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 257 transitions. [2024-11-06 18:50:23,474 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 257 transitions. Word has length 62 [2024-11-06 18:50:23,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:23,475 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 257 transitions. [2024-11-06 18:50:23,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.65) internal successors, (93), 20 states have internal predecessors, (93), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-06 18:50:23,475 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 257 transitions. [2024-11-06 18:50:23,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-06 18:50:23,476 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:23,476 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:23,493 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-06 18:50:23,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-06 18:50:23,677 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:23,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:23,677 INFO L85 PathProgramCache]: Analyzing trace with hash -756147989, now seen corresponding path program 2 times [2024-11-06 18:50:23,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:23,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622454160] [2024-11-06 18:50:23,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:23,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:23,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:23,755 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:23,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:23,758 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:23,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:23,762 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-06 18:50:23,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:23,764 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-06 18:50:23,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:23,782 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-06 18:50:23,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:23,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622454160] [2024-11-06 18:50:23,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622454160] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:50:23,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:50:23,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-06 18:50:23,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696433819] [2024-11-06 18:50:23,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:50:23,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-06 18:50:23,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:23,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-06 18:50:23,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-06 18:50:23,784 INFO L87 Difference]: Start difference. First operand 178 states and 257 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-06 18:50:23,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:23,822 INFO L93 Difference]: Finished difference Result 207 states and 294 transitions. [2024-11-06 18:50:23,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-06 18:50:23,822 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 67 [2024-11-06 18:50:23,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:23,824 INFO L225 Difference]: With dead ends: 207 [2024-11-06 18:50:23,824 INFO L226 Difference]: Without dead ends: 195 [2024-11-06 18:50:23,824 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-06 18:50:23,825 INFO L432 NwaCegarLoop]: 96 mSDtfsCounter, 5 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:23,825 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 463 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 18:50:23,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-11-06 18:50:23,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 183. [2024-11-06 18:50:23,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 167 states have (on average 1.3532934131736527) internal successors, (226), 170 states have internal predecessors, (226), 8 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (33), 9 states have call predecessors, (33), 7 states have call successors, (33) [2024-11-06 18:50:23,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 267 transitions. [2024-11-06 18:50:23,844 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 267 transitions. Word has length 67 [2024-11-06 18:50:23,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:23,844 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 267 transitions. [2024-11-06 18:50:23,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-06 18:50:23,844 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 267 transitions. [2024-11-06 18:50:23,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-06 18:50:23,845 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:23,845 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:23,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-06 18:50:23,846 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:23,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:23,846 INFO L85 PathProgramCache]: Analyzing trace with hash 423747400, now seen corresponding path program 1 times [2024-11-06 18:50:23,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:23,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675570115] [2024-11-06 18:50:23,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:23,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:23,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:23,954 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:23,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:23,956 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:23,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:23,960 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-06 18:50:23,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:23,980 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-06 18:50:23,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:23,984 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-06 18:50:23,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:23,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675570115] [2024-11-06 18:50:23,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675570115] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:50:23,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645388863] [2024-11-06 18:50:23,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:23,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:23,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:50:23,987 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:50:23,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-06 18:50:24,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:24,063 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-06 18:50:24,065 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:50:24,078 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-06 18:50:24,078 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:50:24,174 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-06 18:50:24,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645388863] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:50:24,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:50:24,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-11-06 18:50:24,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610215196] [2024-11-06 18:50:24,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:50:24,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-06 18:50:24,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:24,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-06 18:50:24,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-06 18:50:24,176 INFO L87 Difference]: Start difference. First operand 183 states and 267 transitions. Second operand has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 12 states have internal predecessors, (55), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-06 18:50:24,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:24,256 INFO L93 Difference]: Finished difference Result 191 states and 274 transitions. [2024-11-06 18:50:24,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-06 18:50:24,256 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 12 states have internal predecessors, (55), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 70 [2024-11-06 18:50:24,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:24,257 INFO L225 Difference]: With dead ends: 191 [2024-11-06 18:50:24,257 INFO L226 Difference]: Without dead ends: 149 [2024-11-06 18:50:24,258 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2024-11-06 18:50:24,258 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 7 mSDsluCounter, 787 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:24,258 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 877 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 18:50:24,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-11-06 18:50:24,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2024-11-06 18:50:24,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 134 states have (on average 1.3582089552238805) internal successors, (182), 138 states have internal predecessors, (182), 7 states have call successors, (7), 3 states have call predecessors, (7), 7 states have return successors, (23), 7 states have call predecessors, (23), 6 states have call successors, (23) [2024-11-06 18:50:24,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 212 transitions. [2024-11-06 18:50:24,280 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 212 transitions. Word has length 70 [2024-11-06 18:50:24,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:24,281 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 212 transitions. [2024-11-06 18:50:24,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 12 states have internal predecessors, (55), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-06 18:50:24,281 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 212 transitions. [2024-11-06 18:50:24,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-06 18:50:24,282 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:24,282 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:24,300 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-06 18:50:24,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:24,483 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:24,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:24,483 INFO L85 PathProgramCache]: Analyzing trace with hash 290886744, now seen corresponding path program 3 times [2024-11-06 18:50:24,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:24,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563102278] [2024-11-06 18:50:24,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:24,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:24,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:24,586 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:24,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:24,590 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:24,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:24,794 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-11-06 18:50:24,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:24,797 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-06 18:50:24,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:24,799 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 4 proven. 54 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-06 18:50:24,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:24,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563102278] [2024-11-06 18:50:24,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563102278] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:50:24,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369243812] [2024-11-06 18:50:24,799 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-06 18:50:24,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:24,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:50:24,802 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:50:24,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-06 18:50:24,912 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-06 18:50:24,912 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:50:24,914 INFO L255 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-06 18:50:24,916 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:50:25,326 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 10 proven. 54 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-06 18:50:25,326 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:50:26,130 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 4 proven. 54 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-06 18:50:26,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369243812] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:50:26,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:50:26,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 19, 18] total 44 [2024-11-06 18:50:26,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345079211] [2024-11-06 18:50:26,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:50:26,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-06 18:50:26,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:26,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-06 18:50:26,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1721, Unknown=0, NotChecked=0, Total=1892 [2024-11-06 18:50:26,133 INFO L87 Difference]: Start difference. First operand 149 states and 212 transitions. Second operand has 44 states, 44 states have (on average 3.0454545454545454) internal successors, (134), 40 states have internal predecessors, (134), 4 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (10), 8 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-06 18:50:30,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:30,962 INFO L93 Difference]: Finished difference Result 564 states and 839 transitions. [2024-11-06 18:50:30,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2024-11-06 18:50:30,963 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 3.0454545454545454) internal successors, (134), 40 states have internal predecessors, (134), 4 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (10), 8 states have call predecessors, (10), 4 states have call successors, (10) Word has length 72 [2024-11-06 18:50:30,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:30,965 INFO L225 Difference]: With dead ends: 564 [2024-11-06 18:50:30,965 INFO L226 Difference]: Without dead ends: 418 [2024-11-06 18:50:30,970 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4344 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=2139, Invalid=13611, Unknown=0, NotChecked=0, Total=15750 [2024-11-06 18:50:30,971 INFO L432 NwaCegarLoop]: 121 mSDtfsCounter, 1049 mSDsluCounter, 2839 mSDsCounter, 0 mSdLazyCounter, 3293 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1064 SdHoareTripleChecker+Valid, 2960 SdHoareTripleChecker+Invalid, 3571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 3293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:30,971 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1064 Valid, 2960 Invalid, 3571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 3293 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-06 18:50:30,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2024-11-06 18:50:30,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 167. [2024-11-06 18:50:30,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 149 states have (on average 1.3691275167785235) internal successors, (204), 154 states have internal predecessors, (204), 9 states have call successors, (9), 3 states have call predecessors, (9), 8 states have return successors, (41), 9 states have call predecessors, (41), 8 states have call successors, (41) [2024-11-06 18:50:30,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 254 transitions. [2024-11-06 18:50:30,992 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 254 transitions. Word has length 72 [2024-11-06 18:50:30,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:30,992 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 254 transitions. [2024-11-06 18:50:30,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 3.0454545454545454) internal successors, (134), 40 states have internal predecessors, (134), 4 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (10), 8 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-06 18:50:30,992 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 254 transitions. [2024-11-06 18:50:30,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-06 18:50:30,993 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:30,994 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:31,010 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-06 18:50:31,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:31,198 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:31,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:31,198 INFO L85 PathProgramCache]: Analyzing trace with hash 974959335, now seen corresponding path program 2 times [2024-11-06 18:50:31,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:31,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616559499] [2024-11-06 18:50:31,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:31,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:31,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:31,279 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:31,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:31,281 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:31,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:31,451 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-06 18:50:31,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:31,469 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-06 18:50:31,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:31,472 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 4 proven. 164 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-06 18:50:31,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:31,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616559499] [2024-11-06 18:50:31,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616559499] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:50:31,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849102205] [2024-11-06 18:50:31,472 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 18:50:31,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:31,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:50:31,475 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:50:31,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-06 18:50:31,550 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 18:50:31,550 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:50:31,552 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-06 18:50:31,553 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:50:31,706 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 25 proven. 155 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-06 18:50:31,707 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:50:32,117 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 4 proven. 164 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-06 18:50:32,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849102205] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:50:32,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:50:32,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 38 [2024-11-06 18:50:32,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378313253] [2024-11-06 18:50:32,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:50:32,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-06 18:50:32,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:32,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-06 18:50:32,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=490, Invalid=916, Unknown=0, NotChecked=0, Total=1406 [2024-11-06 18:50:32,120 INFO L87 Difference]: Start difference. First operand 167 states and 254 transitions. Second operand has 38 states, 38 states have (on average 3.8684210526315788) internal successors, (147), 38 states have internal predecessors, (147), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-06 18:50:32,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:32,315 INFO L93 Difference]: Finished difference Result 506 states and 726 transitions. [2024-11-06 18:50:32,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-06 18:50:32,316 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.8684210526315788) internal successors, (147), 38 states have internal predecessors, (147), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 80 [2024-11-06 18:50:32,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:32,318 INFO L225 Difference]: With dead ends: 506 [2024-11-06 18:50:32,318 INFO L226 Difference]: Without dead ends: 354 [2024-11-06 18:50:32,319 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=525, Invalid=957, Unknown=0, NotChecked=0, Total=1482 [2024-11-06 18:50:32,320 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 560 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 560 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:32,320 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [560 Valid, 769 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:50:32,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2024-11-06 18:50:32,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 193. [2024-11-06 18:50:32,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 175 states have (on average 1.4114285714285715) internal successors, (247), 180 states have internal predecessors, (247), 9 states have call successors, (9), 3 states have call predecessors, (9), 8 states have return successors, (41), 9 states have call predecessors, (41), 8 states have call successors, (41) [2024-11-06 18:50:32,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 297 transitions. [2024-11-06 18:50:32,340 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 297 transitions. Word has length 80 [2024-11-06 18:50:32,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:32,340 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 297 transitions. [2024-11-06 18:50:32,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.8684210526315788) internal successors, (147), 38 states have internal predecessors, (147), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-06 18:50:32,341 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 297 transitions. [2024-11-06 18:50:32,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-06 18:50:32,342 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:32,343 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:32,359 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-06 18:50:32,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:32,543 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:32,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:32,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1356621440, now seen corresponding path program 1 times [2024-11-06 18:50:32,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:32,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543508512] [2024-11-06 18:50:32,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:32,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:32,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:32,630 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:32,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:32,632 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:32,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:32,641 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-06 18:50:32,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:32,643 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-11-06 18:50:32,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:32,662 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-06 18:50:32,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:32,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543508512] [2024-11-06 18:50:32,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543508512] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:50:32,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:50:32,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-06 18:50:32,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146127967] [2024-11-06 18:50:32,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:50:32,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-06 18:50:32,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:32,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-06 18:50:32,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-06 18:50:32,666 INFO L87 Difference]: Start difference. First operand 193 states and 297 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-06 18:50:32,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:32,703 INFO L93 Difference]: Finished difference Result 243 states and 361 transitions. [2024-11-06 18:50:32,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-06 18:50:32,704 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 80 [2024-11-06 18:50:32,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:32,706 INFO L225 Difference]: With dead ends: 243 [2024-11-06 18:50:32,706 INFO L226 Difference]: Without dead ends: 196 [2024-11-06 18:50:32,706 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-06 18:50:32,707 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 1 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:32,707 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 440 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 18:50:32,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2024-11-06 18:50:32,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 188. [2024-11-06 18:50:32,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 173 states have (on average 1.416184971098266) internal successors, (245), 176 states have internal predecessors, (245), 7 states have call successors, (7), 3 states have call predecessors, (7), 7 states have return successors, (23), 8 states have call predecessors, (23), 6 states have call successors, (23) [2024-11-06 18:50:32,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 275 transitions. [2024-11-06 18:50:32,724 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 275 transitions. Word has length 80 [2024-11-06 18:50:32,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:32,725 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 275 transitions. [2024-11-06 18:50:32,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-06 18:50:32,725 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 275 transitions. [2024-11-06 18:50:32,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-06 18:50:32,726 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:32,727 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:32,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-06 18:50:32,727 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:32,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:32,727 INFO L85 PathProgramCache]: Analyzing trace with hash -995007567, now seen corresponding path program 2 times [2024-11-06 18:50:32,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:32,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796261335] [2024-11-06 18:50:32,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:32,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:32,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:32,834 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:32,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:32,837 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:32,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:32,846 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-06 18:50:32,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:32,866 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-11-06 18:50:32,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:32,871 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-06 18:50:32,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:32,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796261335] [2024-11-06 18:50:32,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796261335] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:50:32,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550566120] [2024-11-06 18:50:32,872 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 18:50:32,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:32,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:50:32,874 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:50:32,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-06 18:50:32,946 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-06 18:50:32,946 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:50:32,947 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-06 18:50:32,948 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:50:33,006 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-06 18:50:33,006 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 18:50:33,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550566120] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:50:33,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 18:50:33,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 12 [2024-11-06 18:50:33,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101518722] [2024-11-06 18:50:33,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:50:33,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-06 18:50:33,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:33,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-06 18:50:33,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-06 18:50:33,007 INFO L87 Difference]: Start difference. First operand 188 states and 275 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-06 18:50:33,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:33,082 INFO L93 Difference]: Finished difference Result 208 states and 297 transitions. [2024-11-06 18:50:33,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-06 18:50:33,082 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 84 [2024-11-06 18:50:33,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:33,084 INFO L225 Difference]: With dead ends: 208 [2024-11-06 18:50:33,084 INFO L226 Difference]: Without dead ends: 203 [2024-11-06 18:50:33,084 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-06 18:50:33,085 INFO L432 NwaCegarLoop]: 100 mSDtfsCounter, 7 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:33,085 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 760 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:50:33,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2024-11-06 18:50:33,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 195. [2024-11-06 18:50:33,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 180 states have (on average 1.4) internal successors, (252), 183 states have internal predecessors, (252), 7 states have call successors, (7), 3 states have call predecessors, (7), 7 states have return successors, (23), 8 states have call predecessors, (23), 6 states have call successors, (23) [2024-11-06 18:50:33,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 282 transitions. [2024-11-06 18:50:33,102 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 282 transitions. Word has length 84 [2024-11-06 18:50:33,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:33,102 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 282 transitions. [2024-11-06 18:50:33,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-06 18:50:33,102 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 282 transitions. [2024-11-06 18:50:33,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-06 18:50:33,103 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:33,103 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:33,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-06 18:50:33,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:33,304 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:33,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:33,304 INFO L85 PathProgramCache]: Analyzing trace with hash -976468080, now seen corresponding path program 1 times [2024-11-06 18:50:33,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:33,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165723479] [2024-11-06 18:50:33,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:33,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:33,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:33,400 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:33,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:33,402 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:33,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:33,410 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-06 18:50:33,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:33,430 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-11-06 18:50:33,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:33,434 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-06 18:50:33,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:33,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165723479] [2024-11-06 18:50:33,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165723479] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:50:33,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262025238] [2024-11-06 18:50:33,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:33,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:33,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:50:33,437 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:50:33,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-06 18:50:33,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:33,515 INFO L255 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-06 18:50:33,516 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:50:33,555 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-11-06 18:50:33,555 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 18:50:33,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262025238] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:50:33,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 18:50:33,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 9 [2024-11-06 18:50:33,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227932645] [2024-11-06 18:50:33,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:50:33,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-06 18:50:33,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:33,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-06 18:50:33,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-06 18:50:33,556 INFO L87 Difference]: Start difference. First operand 195 states and 282 transitions. Second operand has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:50:33,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:33,614 INFO L93 Difference]: Finished difference Result 306 states and 431 transitions. [2024-11-06 18:50:33,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-06 18:50:33,614 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 85 [2024-11-06 18:50:33,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:33,616 INFO L225 Difference]: With dead ends: 306 [2024-11-06 18:50:33,616 INFO L226 Difference]: Without dead ends: 247 [2024-11-06 18:50:33,617 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-06 18:50:33,617 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 47 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:33,618 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 616 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 18:50:33,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2024-11-06 18:50:33,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 229. [2024-11-06 18:50:33,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 212 states have (on average 1.3915094339622642) internal successors, (295), 212 states have internal predecessors, (295), 9 states have call successors, (9), 3 states have call predecessors, (9), 7 states have return successors, (34), 13 states have call predecessors, (34), 8 states have call successors, (34) [2024-11-06 18:50:33,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 338 transitions. [2024-11-06 18:50:33,637 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 338 transitions. Word has length 85 [2024-11-06 18:50:33,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:33,638 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 338 transitions. [2024-11-06 18:50:33,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:50:33,638 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 338 transitions. [2024-11-06 18:50:33,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-06 18:50:33,639 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:33,639 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:33,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-06 18:50:33,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:33,840 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:33,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:33,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1629555474, now seen corresponding path program 1 times [2024-11-06 18:50:33,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:33,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372395380] [2024-11-06 18:50:33,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:33,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:33,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:33,968 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:33,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:33,970 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:33,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:34,179 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-06 18:50:34,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:34,182 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-11-06 18:50:34,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:34,185 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 4 proven. 73 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-06 18:50:34,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:34,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372395380] [2024-11-06 18:50:34,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372395380] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:50:34,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246728564] [2024-11-06 18:50:34,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:34,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:34,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:50:34,187 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:50:34,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-06 18:50:34,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:34,267 INFO L255 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-06 18:50:34,269 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:50:35,014 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-06 18:50:35,015 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:50:35,363 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-06 18:50:35,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246728564] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:50:35,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:50:35,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 31 [2024-11-06 18:50:35,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185068678] [2024-11-06 18:50:35,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:50:35,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-06 18:50:35,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:35,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-06 18:50:35,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=844, Unknown=0, NotChecked=0, Total=930 [2024-11-06 18:50:35,367 INFO L87 Difference]: Start difference. First operand 229 states and 338 transitions. Second operand has 31 states, 30 states have (on average 3.933333333333333) internal successors, (118), 26 states have internal predecessors, (118), 4 states have call successors, (9), 2 states have call predecessors, (9), 6 states have return successors, (10), 8 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-06 18:50:36,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:36,833 INFO L93 Difference]: Finished difference Result 639 states and 1003 transitions. [2024-11-06 18:50:36,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-06 18:50:36,834 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 3.933333333333333) internal successors, (118), 26 states have internal predecessors, (118), 4 states have call successors, (9), 2 states have call predecessors, (9), 6 states have return successors, (10), 8 states have call predecessors, (10), 4 states have call successors, (10) Word has length 85 [2024-11-06 18:50:36,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:36,836 INFO L225 Difference]: With dead ends: 639 [2024-11-06 18:50:36,836 INFO L226 Difference]: Without dead ends: 370 [2024-11-06 18:50:36,840 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 712 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=446, Invalid=3214, Unknown=0, NotChecked=0, Total=3660 [2024-11-06 18:50:36,841 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 268 mSDsluCounter, 2442 mSDsCounter, 0 mSdLazyCounter, 1034 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 2564 SdHoareTripleChecker+Invalid, 1079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:36,842 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 2564 Invalid, 1079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1034 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-06 18:50:36,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2024-11-06 18:50:36,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 249. [2024-11-06 18:50:36,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 224 states have (on average 1.3705357142857142) internal successors, (307), 226 states have internal predecessors, (307), 15 states have call successors, (15), 3 states have call predecessors, (15), 9 states have return successors, (86), 19 states have call predecessors, (86), 14 states have call successors, (86) [2024-11-06 18:50:36,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 408 transitions. [2024-11-06 18:50:36,871 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 408 transitions. Word has length 85 [2024-11-06 18:50:36,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:36,871 INFO L471 AbstractCegarLoop]: Abstraction has 249 states and 408 transitions. [2024-11-06 18:50:36,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 3.933333333333333) internal successors, (118), 26 states have internal predecessors, (118), 4 states have call successors, (9), 2 states have call predecessors, (9), 6 states have return successors, (10), 8 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-06 18:50:36,871 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 408 transitions. [2024-11-06 18:50:36,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-06 18:50:36,873 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:36,873 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:36,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-06 18:50:37,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-06 18:50:37,077 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:37,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:37,077 INFO L85 PathProgramCache]: Analyzing trace with hash -2141293839, now seen corresponding path program 1 times [2024-11-06 18:50:37,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:37,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511430474] [2024-11-06 18:50:37,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:37,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:37,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:37,165 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:37,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:37,167 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:37,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:37,331 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-06 18:50:37,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:37,333 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-06 18:50:37,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:37,335 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 4 proven. 94 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-06 18:50:37,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:37,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511430474] [2024-11-06 18:50:37,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511430474] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:50:37,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461747767] [2024-11-06 18:50:37,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:37,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:37,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:50:37,338 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:50:37,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-06 18:50:37,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:37,426 INFO L255 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-06 18:50:37,428 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:50:37,590 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 26 proven. 84 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-06 18:50:37,591 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:50:37,843 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 4 proven. 94 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-06 18:50:37,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461747767] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:50:37,844 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:50:37,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 31 [2024-11-06 18:50:37,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049517492] [2024-11-06 18:50:37,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:50:37,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-06 18:50:37,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:37,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-06 18:50:37,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=649, Unknown=0, NotChecked=0, Total=930 [2024-11-06 18:50:37,845 INFO L87 Difference]: Start difference. First operand 249 states and 408 transitions. Second operand has 31 states, 31 states have (on average 4.709677419354839) internal successors, (146), 31 states have internal predecessors, (146), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-06 18:50:38,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:38,620 INFO L93 Difference]: Finished difference Result 620 states and 986 transitions. [2024-11-06 18:50:38,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-06 18:50:38,620 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.709677419354839) internal successors, (146), 31 states have internal predecessors, (146), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 89 [2024-11-06 18:50:38,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:38,623 INFO L225 Difference]: With dead ends: 620 [2024-11-06 18:50:38,623 INFO L226 Difference]: Without dead ends: 390 [2024-11-06 18:50:38,625 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=529, Invalid=953, Unknown=0, NotChecked=0, Total=1482 [2024-11-06 18:50:38,626 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 430 mSDsluCounter, 1608 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 1749 SdHoareTripleChecker+Invalid, 1035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:38,627 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [430 Valid, 1749 Invalid, 1035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 981 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-06 18:50:38,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2024-11-06 18:50:38,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 254. [2024-11-06 18:50:38,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 229 states have (on average 1.3668122270742358) internal successors, (313), 231 states have internal predecessors, (313), 15 states have call successors, (15), 3 states have call predecessors, (15), 9 states have return successors, (86), 19 states have call predecessors, (86), 14 states have call successors, (86) [2024-11-06 18:50:38,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 414 transitions. [2024-11-06 18:50:38,656 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 414 transitions. Word has length 89 [2024-11-06 18:50:38,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:38,657 INFO L471 AbstractCegarLoop]: Abstraction has 254 states and 414 transitions. [2024-11-06 18:50:38,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.709677419354839) internal successors, (146), 31 states have internal predecessors, (146), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-06 18:50:38,657 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 414 transitions. [2024-11-06 18:50:38,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-06 18:50:38,658 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:38,658 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:38,675 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-06 18:50:38,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-06 18:50:38,859 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:38,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:38,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1181284945, now seen corresponding path program 1 times [2024-11-06 18:50:38,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:38,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177297153] [2024-11-06 18:50:38,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:38,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:38,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:38,990 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:38,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:38,992 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:38,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:39,200 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-06 18:50:39,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:39,203 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-06 18:50:39,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:39,205 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 4 proven. 94 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-06 18:50:39,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:39,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177297153] [2024-11-06 18:50:39,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177297153] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:50:39,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384526742] [2024-11-06 18:50:39,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:39,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:39,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:50:39,208 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:50:39,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-06 18:50:39,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:39,492 INFO L255 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-06 18:50:39,494 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:50:39,585 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2024-11-06 18:50:39,586 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 18:50:39,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384526742] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:50:39,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 18:50:39,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 19 [2024-11-06 18:50:39,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248321017] [2024-11-06 18:50:39,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:50:39,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-06 18:50:39,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:39,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-06 18:50:39,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2024-11-06 18:50:39,587 INFO L87 Difference]: Start difference. First operand 254 states and 414 transitions. Second operand has 9 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:50:39,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:39,692 INFO L93 Difference]: Finished difference Result 299 states and 466 transitions. [2024-11-06 18:50:39,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-06 18:50:39,692 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 90 [2024-11-06 18:50:39,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:39,694 INFO L225 Difference]: With dead ends: 299 [2024-11-06 18:50:39,694 INFO L226 Difference]: Without dead ends: 268 [2024-11-06 18:50:39,694 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2024-11-06 18:50:39,694 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 47 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:39,695 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 638 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:50:39,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2024-11-06 18:50:39,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 256. [2024-11-06 18:50:39,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 231 states have (on average 1.3636363636363635) internal successors, (315), 233 states have internal predecessors, (315), 15 states have call successors, (15), 3 states have call predecessors, (15), 9 states have return successors, (86), 19 states have call predecessors, (86), 14 states have call successors, (86) [2024-11-06 18:50:39,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 416 transitions. [2024-11-06 18:50:39,718 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 416 transitions. Word has length 90 [2024-11-06 18:50:39,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:39,718 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 416 transitions. [2024-11-06 18:50:39,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:50:39,719 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 416 transitions. [2024-11-06 18:50:39,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-06 18:50:39,720 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:39,720 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:39,737 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-06 18:50:39,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-06 18:50:39,921 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:39,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:39,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1628149364, now seen corresponding path program 1 times [2024-11-06 18:50:39,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:39,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613190295] [2024-11-06 18:50:39,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:39,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:39,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:40,028 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:40,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:40,030 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:40,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:40,248 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-06 18:50:40,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:40,251 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-06 18:50:40,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:40,252 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 4 proven. 94 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-06 18:50:40,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:40,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613190295] [2024-11-06 18:50:40,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613190295] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:50:40,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871743216] [2024-11-06 18:50:40,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:40,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:40,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:50:40,255 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:50:40,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-06 18:50:40,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:40,343 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-06 18:50:40,345 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:50:40,509 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2024-11-06 18:50:40,509 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 18:50:40,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871743216] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:50:40,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 18:50:40,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [12] total 21 [2024-11-06 18:50:40,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102244173] [2024-11-06 18:50:40,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:50:40,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-06 18:50:40,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:40,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-06 18:50:40,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=368, Unknown=0, NotChecked=0, Total=420 [2024-11-06 18:50:40,511 INFO L87 Difference]: Start difference. First operand 256 states and 416 transitions. Second operand has 11 states, 10 states have (on average 5.0) internal successors, (50), 9 states have internal predecessors, (50), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:50:40,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:40,693 INFO L93 Difference]: Finished difference Result 299 states and 465 transitions. [2024-11-06 18:50:40,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-06 18:50:40,694 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.0) internal successors, (50), 9 states have internal predecessors, (50), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 92 [2024-11-06 18:50:40,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:40,696 INFO L225 Difference]: With dead ends: 299 [2024-11-06 18:50:40,696 INFO L226 Difference]: Without dead ends: 272 [2024-11-06 18:50:40,697 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2024-11-06 18:50:40,698 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 53 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 849 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:40,698 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 849 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:50:40,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2024-11-06 18:50:40,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 260. [2024-11-06 18:50:40,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 235 states have (on average 1.3574468085106384) internal successors, (319), 237 states have internal predecessors, (319), 15 states have call successors, (15), 3 states have call predecessors, (15), 9 states have return successors, (86), 19 states have call predecessors, (86), 14 states have call successors, (86) [2024-11-06 18:50:40,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 420 transitions. [2024-11-06 18:50:40,721 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 420 transitions. Word has length 92 [2024-11-06 18:50:40,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:40,721 INFO L471 AbstractCegarLoop]: Abstraction has 260 states and 420 transitions. [2024-11-06 18:50:40,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.0) internal successors, (50), 9 states have internal predecessors, (50), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:50:40,721 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 420 transitions. [2024-11-06 18:50:40,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-06 18:50:40,723 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:40,723 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:40,740 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-06 18:50:40,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-06 18:50:40,928 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:40,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:40,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1089209382, now seen corresponding path program 1 times [2024-11-06 18:50:40,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:40,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499261032] [2024-11-06 18:50:40,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:40,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:40,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:41,020 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:41,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:41,021 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:41,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:41,028 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-06 18:50:41,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:41,048 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-11-06 18:50:41,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:41,052 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-11-06 18:50:41,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:41,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499261032] [2024-11-06 18:50:41,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499261032] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:50:41,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218153287] [2024-11-06 18:50:41,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:41,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:41,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:50:41,058 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:50:41,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-06 18:50:41,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:41,142 INFO L255 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-06 18:50:41,143 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:50:41,163 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-11-06 18:50:41,164 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:50:41,284 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-11-06 18:50:41,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218153287] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:50:41,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:50:41,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 14 [2024-11-06 18:50:41,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86462069] [2024-11-06 18:50:41,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:50:41,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-06 18:50:41,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:41,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-06 18:50:41,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-11-06 18:50:41,285 INFO L87 Difference]: Start difference. First operand 260 states and 420 transitions. Second operand has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 12 states have internal predecessors, (69), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-06 18:50:41,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:41,348 INFO L93 Difference]: Finished difference Result 307 states and 474 transitions. [2024-11-06 18:50:41,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-06 18:50:41,349 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 12 states have internal predecessors, (69), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 93 [2024-11-06 18:50:41,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:41,350 INFO L225 Difference]: With dead ends: 307 [2024-11-06 18:50:41,350 INFO L226 Difference]: Without dead ends: 272 [2024-11-06 18:50:41,351 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-11-06 18:50:41,351 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 44 mSDsluCounter, 745 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:41,351 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 837 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 18:50:41,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2024-11-06 18:50:41,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 260. [2024-11-06 18:50:41,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 235 states have (on average 1.348936170212766) internal successors, (317), 237 states have internal predecessors, (317), 15 states have call successors, (15), 3 states have call predecessors, (15), 9 states have return successors, (86), 19 states have call predecessors, (86), 14 states have call successors, (86) [2024-11-06 18:50:41,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 418 transitions. [2024-11-06 18:50:41,374 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 418 transitions. Word has length 93 [2024-11-06 18:50:41,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:41,374 INFO L471 AbstractCegarLoop]: Abstraction has 260 states and 418 transitions. [2024-11-06 18:50:41,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 12 states have internal predecessors, (69), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-06 18:50:41,375 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 418 transitions. [2024-11-06 18:50:41,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-06 18:50:41,376 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:41,376 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:41,393 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-06 18:50:41,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:41,577 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:41,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:41,577 INFO L85 PathProgramCache]: Analyzing trace with hash -599734360, now seen corresponding path program 1 times [2024-11-06 18:50:41,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:41,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627575542] [2024-11-06 18:50:41,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:41,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:41,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:41,708 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:41,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:41,709 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:41,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:41,918 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-06 18:50:41,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:41,921 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-11-06 18:50:41,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:41,925 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 4 proven. 100 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-06 18:50:41,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:41,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627575542] [2024-11-06 18:50:41,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627575542] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:50:41,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541291784] [2024-11-06 18:50:41,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:41,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:41,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:50:41,931 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:50:41,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-06 18:50:42,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:42,567 INFO L255 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-06 18:50:42,577 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:50:42,983 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-11-06 18:50:42,984 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:50:43,574 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-11-06 18:50:43,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541291784] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:50:43,574 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:50:43,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 15] total 38 [2024-11-06 18:50:43,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048223977] [2024-11-06 18:50:43,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:50:43,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-06 18:50:43,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:43,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-06 18:50:43,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1291, Unknown=0, NotChecked=0, Total=1406 [2024-11-06 18:50:43,576 INFO L87 Difference]: Start difference. First operand 260 states and 418 transitions. Second operand has 38 states, 36 states have (on average 3.1944444444444446) internal successors, (115), 34 states have internal predecessors, (115), 4 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-06 18:50:46,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:46,610 INFO L93 Difference]: Finished difference Result 603 states and 961 transitions. [2024-11-06 18:50:46,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-11-06 18:50:46,611 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 36 states have (on average 3.1944444444444446) internal successors, (115), 34 states have internal predecessors, (115), 4 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) Word has length 93 [2024-11-06 18:50:46,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:46,613 INFO L225 Difference]: With dead ends: 603 [2024-11-06 18:50:46,613 INFO L226 Difference]: Without dead ends: 371 [2024-11-06 18:50:46,616 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1403 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=621, Invalid=6519, Unknown=0, NotChecked=0, Total=7140 [2024-11-06 18:50:46,616 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 383 mSDsluCounter, 2321 mSDsCounter, 0 mSdLazyCounter, 2334 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 2422 SdHoareTripleChecker+Invalid, 2443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 2334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:46,616 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 2422 Invalid, 2443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 2334 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-06 18:50:46,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2024-11-06 18:50:46,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 273. [2024-11-06 18:50:46,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 248 states have (on average 1.342741935483871) internal successors, (333), 249 states have internal predecessors, (333), 15 states have call successors, (15), 3 states have call predecessors, (15), 9 states have return successors, (86), 20 states have call predecessors, (86), 14 states have call successors, (86) [2024-11-06 18:50:46,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 434 transitions. [2024-11-06 18:50:46,655 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 434 transitions. Word has length 93 [2024-11-06 18:50:46,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:46,655 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 434 transitions. [2024-11-06 18:50:46,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 36 states have (on average 3.1944444444444446) internal successors, (115), 34 states have internal predecessors, (115), 4 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-06 18:50:46,656 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 434 transitions. [2024-11-06 18:50:46,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-06 18:50:46,658 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:46,658 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 13, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:46,675 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-06 18:50:46,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,27 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:46,859 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:46,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:46,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1265325480, now seen corresponding path program 4 times [2024-11-06 18:50:46,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:46,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66030148] [2024-11-06 18:50:46,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:46,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:46,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:46,988 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:46,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:46,989 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:47,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:47,398 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-06 18:50:47,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:47,400 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-06 18:50:47,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:47,402 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 4 proven. 282 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-06 18:50:47,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:47,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66030148] [2024-11-06 18:50:47,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66030148] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:50:47,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269316845] [2024-11-06 18:50:47,403 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-06 18:50:47,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:47,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:50:47,406 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:50:47,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-06 18:50:47,485 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-06 18:50:47,485 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:50:47,486 INFO L255 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-06 18:50:47,488 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:50:48,078 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 10 proven. 282 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-06 18:50:48,079 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:50:49,479 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 10 proven. 282 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-06 18:50:49,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269316845] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:50:49,480 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:50:49,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 26, 27] total 67 [2024-11-06 18:50:49,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318434827] [2024-11-06 18:50:49,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:50:49,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-11-06 18:50:49,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:49,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-11-06 18:50:49,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=386, Invalid=4036, Unknown=0, NotChecked=0, Total=4422 [2024-11-06 18:50:49,482 INFO L87 Difference]: Start difference. First operand 273 states and 434 transitions. Second operand has 67 states, 67 states have (on average 3.1194029850746268) internal successors, (209), 63 states have internal predecessors, (209), 4 states have call successors, (9), 2 states have call predecessors, (9), 6 states have return successors, (10), 8 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-06 18:51:01,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:51:01,487 INFO L93 Difference]: Finished difference Result 1077 states and 1790 transitions. [2024-11-06 18:51:01,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2024-11-06 18:51:01,488 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 3.1194029850746268) internal successors, (209), 63 states have internal predecessors, (209), 4 states have call successors, (9), 2 states have call predecessors, (9), 6 states have return successors, (10), 8 states have call predecessors, (10), 4 states have call successors, (10) Word has length 96 [2024-11-06 18:51:01,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:51:01,492 INFO L225 Difference]: With dead ends: 1077 [2024-11-06 18:51:01,493 INFO L226 Difference]: Without dead ends: 810 [2024-11-06 18:51:01,499 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9136 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=5737, Invalid=30173, Unknown=0, NotChecked=0, Total=35910 [2024-11-06 18:51:01,499 INFO L432 NwaCegarLoop]: 158 mSDtfsCounter, 5007 mSDsluCounter, 6274 mSDsCounter, 0 mSdLazyCounter, 7796 mSolverCounterSat, 1545 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5029 SdHoareTripleChecker+Valid, 6432 SdHoareTripleChecker+Invalid, 9341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1545 IncrementalHoareTripleChecker+Valid, 7796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-06 18:51:01,500 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5029 Valid, 6432 Invalid, 9341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1545 Valid, 7796 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-06 18:51:01,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2024-11-06 18:51:01,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 306. [2024-11-06 18:51:01,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 277 states have (on average 1.364620938628159) internal successors, (378), 279 states have internal predecessors, (378), 18 states have call successors, (18), 3 states have call predecessors, (18), 10 states have return successors, (120), 23 states have call predecessors, (120), 17 states have call successors, (120) [2024-11-06 18:51:01,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 516 transitions. [2024-11-06 18:51:01,541 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 516 transitions. Word has length 96 [2024-11-06 18:51:01,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:51:01,541 INFO L471 AbstractCegarLoop]: Abstraction has 306 states and 516 transitions. [2024-11-06 18:51:01,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 3.1194029850746268) internal successors, (209), 63 states have internal predecessors, (209), 4 states have call successors, (9), 2 states have call predecessors, (9), 6 states have return successors, (10), 8 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-06 18:51:01,541 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 516 transitions. [2024-11-06 18:51:01,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-06 18:51:01,544 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:51:01,544 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 14, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:51:01,561 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-06 18:51:01,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-06 18:51:01,749 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:51:01,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:51:01,749 INFO L85 PathProgramCache]: Analyzing trace with hash 686776477, now seen corresponding path program 1 times [2024-11-06 18:51:01,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:51:01,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435866270] [2024-11-06 18:51:01,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:51:01,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:51:01,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:51:01,899 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:51:01,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:51:01,900 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:51:01,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:51:02,346 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-06 18:51:02,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:51:02,349 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-11-06 18:51:02,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:51:02,352 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 4 proven. 331 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-06 18:51:02,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:51:02,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435866270] [2024-11-06 18:51:02,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435866270] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:51:02,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128094470] [2024-11-06 18:51:02,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:51:02,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:51:02,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:51:02,355 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:51:02,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-06 18:51:02,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:51:02,462 INFO L255 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-11-06 18:51:02,465 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:51:03,433 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 10 proven. 331 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-06 18:51:03,434 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:51:04,832 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 4 proven. 331 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-06 18:51:04,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128094470] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:51:04,832 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:51:04,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 29, 27] total 71 [2024-11-06 18:51:04,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381333181] [2024-11-06 18:51:04,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:51:04,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-11-06 18:51:04,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:51:04,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-11-06 18:51:04,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=4533, Unknown=0, NotChecked=0, Total=4970 [2024-11-06 18:51:04,836 INFO L87 Difference]: Start difference. First operand 306 states and 516 transitions. Second operand has 71 states, 71 states have (on average 3.140845070422535) internal successors, (223), 67 states have internal predecessors, (223), 4 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (10), 8 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-06 18:51:26,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:51:26,664 INFO L93 Difference]: Finished difference Result 1153 states and 2026 transitions. [2024-11-06 18:51:26,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2024-11-06 18:51:26,664 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 3.140845070422535) internal successors, (223), 67 states have internal predecessors, (223), 4 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (10), 8 states have call predecessors, (10), 4 states have call successors, (10) Word has length 108 [2024-11-06 18:51:26,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:51:26,671 INFO L225 Difference]: With dead ends: 1153 [2024-11-06 18:51:26,671 INFO L226 Difference]: Without dead ends: 868 [2024-11-06 18:51:26,677 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11785 ImplicationChecksByTransitivity, 19.3s TimeCoverageRelationStatistics Valid=6532, Invalid=37358, Unknown=0, NotChecked=0, Total=43890 [2024-11-06 18:51:26,678 INFO L432 NwaCegarLoop]: 151 mSDtfsCounter, 4698 mSDsluCounter, 5306 mSDsCounter, 0 mSdLazyCounter, 7475 mSolverCounterSat, 1306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4723 SdHoareTripleChecker+Valid, 5457 SdHoareTripleChecker+Invalid, 8781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1306 IncrementalHoareTripleChecker+Valid, 7475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-06 18:51:26,678 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4723 Valid, 5457 Invalid, 8781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1306 Valid, 7475 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-06 18:51:26,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2024-11-06 18:51:26,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 302. [2024-11-06 18:51:26,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 277 states have (on average 1.3790613718411553) internal successors, (382), 278 states have internal predecessors, (382), 15 states have call successors, (15), 3 states have call predecessors, (15), 9 states have return successors, (86), 20 states have call predecessors, (86), 14 states have call successors, (86) [2024-11-06 18:51:26,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 483 transitions. [2024-11-06 18:51:26,753 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 483 transitions. Word has length 108 [2024-11-06 18:51:26,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:51:26,753 INFO L471 AbstractCegarLoop]: Abstraction has 302 states and 483 transitions. [2024-11-06 18:51:26,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 3.140845070422535) internal successors, (223), 67 states have internal predecessors, (223), 4 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (10), 8 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-06 18:51:26,753 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 483 transitions. [2024-11-06 18:51:26,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-06 18:51:26,755 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:51:26,755 INFO L215 NwaCegarLoop]: trace histogram [23, 22, 22, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:51:26,771 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-06 18:51:26,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,29 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:51:26,960 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:51:26,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:51:26,960 INFO L85 PathProgramCache]: Analyzing trace with hash 761533415, now seen corresponding path program 3 times [2024-11-06 18:51:26,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:51:26,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162606556] [2024-11-06 18:51:26,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:51:26,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:51:26,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:51:27,077 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:51:27,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:51:27,079 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:51:27,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:51:27,541 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-06 18:51:27,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:51:27,543 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-11-06 18:51:27,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:51:27,544 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 4 proven. 746 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-06 18:51:27,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:51:27,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162606556] [2024-11-06 18:51:27,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162606556] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:51:27,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838897738] [2024-11-06 18:51:27,544 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-06 18:51:27,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:51:27,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:51:27,546 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:51:27,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-06 18:51:27,640 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 26 check-sat command(s) [2024-11-06 18:51:27,641 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:51:27,641 INFO L255 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-06 18:51:27,643 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:51:27,956 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 25 proven. 737 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-06 18:51:27,956 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:51:28,933 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 4 proven. 746 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-06 18:51:28,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838897738] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:51:28,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:51:28,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 74 [2024-11-06 18:51:28,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229287337] [2024-11-06 18:51:28,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:51:28,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-11-06 18:51:28,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:51:28,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-11-06 18:51:28,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1846, Invalid=3556, Unknown=0, NotChecked=0, Total=5402 [2024-11-06 18:51:28,936 INFO L87 Difference]: Start difference. First operand 302 states and 483 transitions. Second operand has 74 states, 74 states have (on average 3.445945945945946) internal successors, (255), 74 states have internal predecessors, (255), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-06 18:51:29,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:51:29,378 INFO L93 Difference]: Finished difference Result 920 states and 1357 transitions. [2024-11-06 18:51:29,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-06 18:51:29,379 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 3.445945945945946) internal successors, (255), 74 states have internal predecessors, (255), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 116 [2024-11-06 18:51:29,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:51:29,381 INFO L225 Difference]: With dead ends: 920 [2024-11-06 18:51:29,381 INFO L226 Difference]: Without dead ends: 669 [2024-11-06 18:51:29,382 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2287 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1917, Invalid=3633, Unknown=0, NotChecked=0, Total=5550 [2024-11-06 18:51:29,383 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 1684 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1684 SdHoareTripleChecker+Valid, 892 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 18:51:29,383 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1684 Valid, 892 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 18:51:29,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2024-11-06 18:51:29,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 346. [2024-11-06 18:51:29,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 321 states have (on average 1.4174454828660437) internal successors, (455), 322 states have internal predecessors, (455), 15 states have call successors, (15), 3 states have call predecessors, (15), 9 states have return successors, (86), 20 states have call predecessors, (86), 14 states have call successors, (86) [2024-11-06 18:51:29,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 556 transitions. [2024-11-06 18:51:29,428 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 556 transitions. Word has length 116 [2024-11-06 18:51:29,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:51:29,429 INFO L471 AbstractCegarLoop]: Abstraction has 346 states and 556 transitions. [2024-11-06 18:51:29,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 3.445945945945946) internal successors, (255), 74 states have internal predecessors, (255), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-06 18:51:29,429 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 556 transitions. [2024-11-06 18:51:29,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-06 18:51:29,430 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:51:29,431 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 15, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:51:29,447 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-06 18:51:29,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,30 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:51:29,632 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:51:29,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:51:29,632 INFO L85 PathProgramCache]: Analyzing trace with hash -265556877, now seen corresponding path program 1 times [2024-11-06 18:51:29,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:51:29,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659390485] [2024-11-06 18:51:29,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:51:29,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:51:29,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:51:29,814 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:51:29,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:51:29,816 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:51:29,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:51:30,198 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-11-06 18:51:30,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:51:30,201 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-11-06 18:51:30,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:51:30,202 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 4 proven. 376 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-06 18:51:30,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:51:30,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659390485] [2024-11-06 18:51:30,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659390485] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:51:30,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878383770] [2024-11-06 18:51:30,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:51:30,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:51:30,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:51:30,204 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:51:30,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-06 18:51:30,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:51:30,401 INFO L255 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-06 18:51:30,402 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:51:30,504 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2024-11-06 18:51:30,504 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 18:51:30,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878383770] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:51:30,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 18:51:30,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [20] total 26 [2024-11-06 18:51:30,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339358320] [2024-11-06 18:51:30,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:51:30,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-06 18:51:30,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:51:30,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-06 18:51:30,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=583, Unknown=0, NotChecked=0, Total=650 [2024-11-06 18:51:30,505 INFO L87 Difference]: Start difference. First operand 346 states and 556 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-06 18:51:30,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:51:30,574 INFO L93 Difference]: Finished difference Result 397 states and 618 transitions. [2024-11-06 18:51:30,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-06 18:51:30,576 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 119 [2024-11-06 18:51:30,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:51:30,579 INFO L225 Difference]: With dead ends: 397 [2024-11-06 18:51:30,579 INFO L226 Difference]: Without dead ends: 350 [2024-11-06 18:51:30,579 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=583, Unknown=0, NotChecked=0, Total=650 [2024-11-06 18:51:30,579 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 8 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:51:30,580 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 612 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 18:51:30,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2024-11-06 18:51:30,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 348. [2024-11-06 18:51:30,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 323 states have (on average 1.414860681114551) internal successors, (457), 324 states have internal predecessors, (457), 15 states have call successors, (15), 3 states have call predecessors, (15), 9 states have return successors, (86), 20 states have call predecessors, (86), 14 states have call successors, (86) [2024-11-06 18:51:30,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 558 transitions. [2024-11-06 18:51:30,620 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 558 transitions. Word has length 119 [2024-11-06 18:51:30,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:51:30,620 INFO L471 AbstractCegarLoop]: Abstraction has 348 states and 558 transitions. [2024-11-06 18:51:30,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-06 18:51:30,620 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 558 transitions. [2024-11-06 18:51:30,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-06 18:51:30,622 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:51:30,622 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 15, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:51:30,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-06 18:51:30,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-06 18:51:30,823 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:51:30,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:51:30,823 INFO L85 PathProgramCache]: Analyzing trace with hash 2142686962, now seen corresponding path program 1 times [2024-11-06 18:51:30,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:51:30,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808742448] [2024-11-06 18:51:30,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:51:30,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:51:30,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:51:30,984 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:51:30,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:51:30,986 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:51:31,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:51:31,421 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-11-06 18:51:31,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:51:31,425 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-11-06 18:51:31,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:51:31,427 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 4 proven. 376 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-06 18:51:31,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:51:31,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808742448] [2024-11-06 18:51:31,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808742448] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:51:31,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788454033] [2024-11-06 18:51:31,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:51:31,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:51:31,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:51:31,430 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:51:31,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-06 18:51:31,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:51:31,509 INFO L255 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-06 18:51:31,511 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:51:31,614 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2024-11-06 18:51:31,614 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 18:51:31,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788454033] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:51:31,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 18:51:31,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [20] total 25 [2024-11-06 18:51:31,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178808489] [2024-11-06 18:51:31,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:51:31,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-06 18:51:31,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:51:31,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-06 18:51:31,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2024-11-06 18:51:31,615 INFO L87 Difference]: Start difference. First operand 348 states and 558 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-06 18:51:31,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:51:31,671 INFO L93 Difference]: Finished difference Result 386 states and 604 transitions. [2024-11-06 18:51:31,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-06 18:51:31,671 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 120 [2024-11-06 18:51:31,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:51:31,673 INFO L225 Difference]: With dead ends: 386 [2024-11-06 18:51:31,673 INFO L226 Difference]: Without dead ends: 350 [2024-11-06 18:51:31,673 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2024-11-06 18:51:31,674 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 5 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:51:31,674 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 520 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 18:51:31,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2024-11-06 18:51:31,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 348. [2024-11-06 18:51:31,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 323 states have (on average 1.411764705882353) internal successors, (456), 324 states have internal predecessors, (456), 15 states have call successors, (15), 3 states have call predecessors, (15), 9 states have return successors, (86), 20 states have call predecessors, (86), 14 states have call successors, (86) [2024-11-06 18:51:31,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 557 transitions. [2024-11-06 18:51:31,725 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 557 transitions. Word has length 120 [2024-11-06 18:51:31,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:51:31,725 INFO L471 AbstractCegarLoop]: Abstraction has 348 states and 557 transitions. [2024-11-06 18:51:31,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-06 18:51:31,725 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 557 transitions. [2024-11-06 18:51:31,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-06 18:51:31,726 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:51:31,726 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 15, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:51:31,744 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-06 18:51:31,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-06 18:51:31,931 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:51:31,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:51:31,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1512404970, now seen corresponding path program 1 times [2024-11-06 18:51:31,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:51:31,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499157825] [2024-11-06 18:51:31,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:51:31,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:51:31,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:51:32,102 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:51:32,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:51:32,104 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:51:32,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:51:32,501 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-11-06 18:51:32,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:51:32,505 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-11-06 18:51:32,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:51:32,507 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 4 proven. 376 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-06 18:51:32,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:51:32,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499157825] [2024-11-06 18:51:32,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499157825] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:51:32,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978718241] [2024-11-06 18:51:32,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:51:32,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:51:32,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:51:32,510 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:51:32,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-06 18:51:32,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:51:32,605 INFO L255 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-06 18:51:32,606 INFO L278 TraceCheckSpWp]: Computing forward predicates...