./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/EvenOdd01-1.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/recursive/EvenOdd01-1.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', '90982c548a5fc18702a6b533ab589c969b87a7efde724f265c9d2a7d593347dc'] 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/recursive/EvenOdd01-1.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 90982c548a5fc18702a6b533ab589c969b87a7efde724f265c9d2a7d593347dc --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-06 23:46:10,462 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 23:46:10,562 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-06 23:46:10,568 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 23:46:10,569 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 23:46:10,597 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 23:46:10,600 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 23:46:10,600 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 23:46:10,601 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 23:46:10,601 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 23:46:10,601 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 23:46:10,602 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 23:46:10,602 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 23:46:10,602 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 23:46:10,603 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 23:46:10,603 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 23:46:10,603 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 23:46:10,603 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-06 23:46:10,603 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-06 23:46:10,603 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-06 23:46:10,603 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 23:46:10,603 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 23:46:10,604 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 23:46:10,604 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 23:46:10,604 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 23:46:10,604 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-06 23:46:10,604 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 23:46:10,604 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 23:46:10,604 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 23:46:10,605 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 23:46:10,605 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 23:46:10,605 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 23:46:10,605 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 23:46:10,605 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 23:46:10,605 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 23:46:10,605 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 23:46:10,605 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-06 23:46:10,606 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-06 23:46:10,606 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 23:46:10,606 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 23:46:10,606 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 23:46:10,606 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 23:46:10,607 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 -> 90982c548a5fc18702a6b533ab589c969b87a7efde724f265c9d2a7d593347dc [2024-11-06 23:46:10,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 23:46:10,912 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 23:46:10,915 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 23:46:10,916 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 23:46:10,916 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 23:46:10,918 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/EvenOdd01-1.c [2024-11-06 23:46:12,114 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 23:46:12,301 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 23:46:12,303 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursive/EvenOdd01-1.c [2024-11-06 23:46:12,309 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c3906e285/3a4565ad9bff4f40a2a28c87b73fcc34/FLAG2b8caa5ac [2024-11-06 23:46:12,669 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c3906e285/3a4565ad9bff4f40a2a28c87b73fcc34 [2024-11-06 23:46:12,671 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 23:46:12,672 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-06 23:46:12,673 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 23:46:12,673 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 23:46:12,676 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 23:46:12,676 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:46:12" (1/1) ... [2024-11-06 23:46:12,677 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7babd33f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:46:12, skipping insertion in model container [2024-11-06 23:46:12,677 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:46:12" (1/1) ... [2024-11-06 23:46:12,686 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 23:46:12,788 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/recursive/EvenOdd01-1.c[975,988] [2024-11-06 23:46:12,790 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 23:46:12,801 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 23:46:12,810 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/recursive/EvenOdd01-1.c[975,988] [2024-11-06 23:46:12,810 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 23:46:12,820 INFO L204 MainTranslator]: Completed translation [2024-11-06 23:46:12,820 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:46:12 WrapperNode [2024-11-06 23:46:12,820 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 23:46:12,821 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 23:46:12,821 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 23:46:12,821 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 23:46:12,827 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:46:12" (1/1) ... [2024-11-06 23:46:12,832 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:46:12" (1/1) ... [2024-11-06 23:46:12,845 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 27 [2024-11-06 23:46:12,845 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 23:46:12,846 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 23:46:12,847 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 23:46:12,847 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 23:46:12,853 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:46:12" (1/1) ... [2024-11-06 23:46:12,853 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:46:12" (1/1) ... [2024-11-06 23:46:12,854 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:46:12" (1/1) ... [2024-11-06 23:46:12,866 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 23:46:12,866 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:46:12" (1/1) ... [2024-11-06 23:46:12,867 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:46:12" (1/1) ... [2024-11-06 23:46:12,868 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:46:12" (1/1) ... [2024-11-06 23:46:12,870 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:46:12" (1/1) ... [2024-11-06 23:46:12,875 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:46:12" (1/1) ... [2024-11-06 23:46:12,876 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:46:12" (1/1) ... [2024-11-06 23:46:12,876 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 23:46:12,877 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 23:46:12,877 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 23:46:12,877 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 23:46:12,878 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:46:12" (1/1) ... [2024-11-06 23:46:12,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 23:46:12,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:46:12,906 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-06 23:46:12,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-06 23:46:12,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 23:46:12,929 INFO L130 BoogieDeclarations]: Found specification of procedure isEven [2024-11-06 23:46:12,929 INFO L138 BoogieDeclarations]: Found implementation of procedure isEven [2024-11-06 23:46:12,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-06 23:46:12,929 INFO L130 BoogieDeclarations]: Found specification of procedure isOdd [2024-11-06 23:46:12,929 INFO L138 BoogieDeclarations]: Found implementation of procedure isOdd [2024-11-06 23:46:12,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 23:46:12,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 23:46:12,980 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 23:46:12,981 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 23:46:13,065 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-06 23:46:13,065 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 23:46:13,071 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 23:46:13,071 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-06 23:46:13,072 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:46:13 BoogieIcfgContainer [2024-11-06 23:46:13,072 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 23:46:13,073 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 23:46:13,073 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 23:46:13,077 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 23:46:13,077 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:46:12" (1/3) ... [2024-11-06 23:46:13,077 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11824953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:46:13, skipping insertion in model container [2024-11-06 23:46:13,077 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:46:12" (2/3) ... [2024-11-06 23:46:13,078 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11824953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:46:13, skipping insertion in model container [2024-11-06 23:46:13,078 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:46:13" (3/3) ... [2024-11-06 23:46:13,079 INFO L112 eAbstractionObserver]: Analyzing ICFG EvenOdd01-1.c [2024-11-06 23:46:13,089 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 23:46:13,089 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-06 23:46:13,121 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 23:46:13,128 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;@acb459c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 23:46:13,128 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-06 23:46:13,132 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-06 23:46:13,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-06 23:46:13,136 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:46:13,136 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:46:13,137 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:46:13,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:46:13,140 INFO L85 PathProgramCache]: Analyzing trace with hash 951696528, now seen corresponding path program 1 times [2024-11-06 23:46:13,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:46:13,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207841643] [2024-11-06 23:46:13,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:46:13,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:46:13,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:13,479 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:13,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:13,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 23:46:13,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:46:13,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207841643] [2024-11-06 23:46:13,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207841643] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 23:46:13,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 23:46:13,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-06 23:46:13,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799532280] [2024-11-06 23:46:13,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 23:46:13,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-06 23:46:13,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:46:13,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-06 23:46:13,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-06 23:46:13,566 INFO L87 Difference]: Start difference. First operand has 25 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-06 23:46:13,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:46:13,649 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2024-11-06 23:46:13,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-06 23:46:13,651 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-11-06 23:46:13,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:46:13,655 INFO L225 Difference]: With dead ends: 36 [2024-11-06 23:46:13,656 INFO L226 Difference]: Without dead ends: 26 [2024-11-06 23:46:13,657 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-06 23:46:13,659 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 4 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 23:46:13,660 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 116 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 23:46:13,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-06 23:46:13,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2024-11-06 23:46:13,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-06 23:46:13,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2024-11-06 23:46:13,682 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 11 [2024-11-06 23:46:13,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:46:13,682 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2024-11-06 23:46:13,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-06 23:46:13,683 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2024-11-06 23:46:13,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-06 23:46:13,683 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:46:13,683 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:46:13,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-06 23:46:13,684 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:46:13,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:46:13,684 INFO L85 PathProgramCache]: Analyzing trace with hash 186374926, now seen corresponding path program 1 times [2024-11-06 23:46:13,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:46:13,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524475069] [2024-11-06 23:46:13,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:46:13,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:46:13,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:13,857 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:13,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:13,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 23:46:13,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:46:13,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524475069] [2024-11-06 23:46:13,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524475069] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 23:46:13,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 23:46:13,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-06 23:46:13,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670357822] [2024-11-06 23:46:13,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 23:46:13,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-06 23:46:13,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:46:13,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-06 23:46:13,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-06 23:46:13,899 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-06 23:46:13,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:46:13,940 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2024-11-06 23:46:13,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-06 23:46:13,941 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-11-06 23:46:13,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:46:13,941 INFO L225 Difference]: With dead ends: 30 [2024-11-06 23:46:13,941 INFO L226 Difference]: Without dead ends: 26 [2024-11-06 23:46:13,941 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-06 23:46:13,942 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 3 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 23:46:13,942 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 94 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 23:46:13,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-06 23:46:13,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2024-11-06 23:46:13,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-06 23:46:13,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2024-11-06 23:46:13,946 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 12 [2024-11-06 23:46:13,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:46:13,946 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2024-11-06 23:46:13,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-06 23:46:13,946 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2024-11-06 23:46:13,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-06 23:46:13,947 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:46:13,947 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:46:13,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-06 23:46:13,947 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:46:13,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:46:13,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1539294770, now seen corresponding path program 1 times [2024-11-06 23:46:13,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:46:13,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332796674] [2024-11-06 23:46:13,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:46:13,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:46:13,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:13,976 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:13,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:14,007 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:14,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:14,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 23:46:14,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:46:14,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332796674] [2024-11-06 23:46:14,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332796674] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 23:46:14,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 23:46:14,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-06 23:46:14,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840969318] [2024-11-06 23:46:14,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 23:46:14,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 23:46:14,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:46:14,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 23:46:14,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-06 23:46:14,037 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-06 23:46:14,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:46:14,062 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2024-11-06 23:46:14,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 23:46:14,063 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2024-11-06 23:46:14,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:46:14,063 INFO L225 Difference]: With dead ends: 38 [2024-11-06 23:46:14,063 INFO L226 Difference]: Without dead ends: 26 [2024-11-06 23:46:14,064 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-06 23:46:14,064 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 6 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 80 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 23:46:14,064 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 80 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 23:46:14,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-06 23:46:14,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2024-11-06 23:46:14,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-06 23:46:14,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2024-11-06 23:46:14,068 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 18 [2024-11-06 23:46:14,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:46:14,069 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2024-11-06 23:46:14,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-06 23:46:14,069 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2024-11-06 23:46:14,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-06 23:46:14,069 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:46:14,069 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:46:14,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-06 23:46:14,070 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:46:14,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:46:14,070 INFO L85 PathProgramCache]: Analyzing trace with hash -542404186, now seen corresponding path program 1 times [2024-11-06 23:46:14,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:46:14,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490578019] [2024-11-06 23:46:14,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:46:14,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:46:14,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:14,225 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:14,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:14,336 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:14,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:14,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 23:46:14,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:46:14,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490578019] [2024-11-06 23:46:14,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490578019] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 23:46:14,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 23:46:14,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-06 23:46:14,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047863719] [2024-11-06 23:46:14,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 23:46:14,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-06 23:46:14,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:46:14,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-06 23:46:14,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-06 23:46:14,393 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 7 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-06 23:46:14,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:46:14,500 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2024-11-06 23:46:14,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-06 23:46:14,500 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 7 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2024-11-06 23:46:14,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:46:14,501 INFO L225 Difference]: With dead ends: 33 [2024-11-06 23:46:14,501 INFO L226 Difference]: Without dead ends: 29 [2024-11-06 23:46:14,501 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-06 23:46:14,502 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 7 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 23:46:14,503 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 97 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 23:46:14,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-06 23:46:14,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2024-11-06 23:46:14,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-06 23:46:14,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2024-11-06 23:46:14,512 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 19 [2024-11-06 23:46:14,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:46:14,512 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2024-11-06 23:46:14,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 7 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-06 23:46:14,512 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2024-11-06 23:46:14,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-06 23:46:14,514 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:46:14,514 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:46:14,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-06 23:46:14,514 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:46:14,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:46:14,516 INFO L85 PathProgramCache]: Analyzing trace with hash 928601386, now seen corresponding path program 1 times [2024-11-06 23:46:14,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:46:14,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867842306] [2024-11-06 23:46:14,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:46:14,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:46:14,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:14,556 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:14,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:14,568 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:14,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:14,581 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:14,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:14,609 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-06 23:46:14,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:46:14,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867842306] [2024-11-06 23:46:14,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867842306] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 23:46:14,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 23:46:14,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-06 23:46:14,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428718641] [2024-11-06 23:46:14,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 23:46:14,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 23:46:14,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:46:14,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 23:46:14,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-06 23:46:14,611 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-06 23:46:14,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:46:14,643 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2024-11-06 23:46:14,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 23:46:14,643 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2024-11-06 23:46:14,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:46:14,644 INFO L225 Difference]: With dead ends: 41 [2024-11-06 23:46:14,644 INFO L226 Difference]: Without dead ends: 29 [2024-11-06 23:46:14,644 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-06 23:46:14,644 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 6 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 23:46:14,644 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 71 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 23:46:14,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-06 23:46:14,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2024-11-06 23:46:14,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 19 states have (on average 1.105263157894737) internal successors, (21), 20 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-06 23:46:14,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2024-11-06 23:46:14,648 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 25 [2024-11-06 23:46:14,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:46:14,648 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2024-11-06 23:46:14,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-06 23:46:14,649 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2024-11-06 23:46:14,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-06 23:46:14,649 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:46:14,649 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:46:14,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-06 23:46:14,649 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:46:14,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:46:14,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1102972856, now seen corresponding path program 1 times [2024-11-06 23:46:14,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:46:14,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215377853] [2024-11-06 23:46:14,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:46:14,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:46:14,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:14,817 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:14,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:14,894 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:14,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:14,950 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:14,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:14,991 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-06 23:46:14,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:46:14,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215377853] [2024-11-06 23:46:14,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215377853] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 23:46:14,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568660722] [2024-11-06 23:46:14,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:46:14,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:46:14,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:46:14,993 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 23:46:14,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-06 23:46:15,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:15,031 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-06 23:46:15,034 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:46:15,163 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-06 23:46:15,164 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:46:15,683 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-06 23:46:15,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568660722] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 23:46:15,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 23:46:15,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 22 [2024-11-06 23:46:15,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130248781] [2024-11-06 23:46:15,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 23:46:15,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-06 23:46:15,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:46:15,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-06 23:46:15,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2024-11-06 23:46:15,687 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand has 22 states, 20 states have (on average 1.85) internal successors, (37), 16 states have internal predecessors, (37), 7 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-06 23:46:15,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:46:15,844 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2024-11-06 23:46:15,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-06 23:46:15,845 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 1.85) internal successors, (37), 16 states have internal predecessors, (37), 7 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) Word has length 26 [2024-11-06 23:46:15,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:46:15,845 INFO L225 Difference]: With dead ends: 39 [2024-11-06 23:46:15,845 INFO L226 Difference]: Without dead ends: 35 [2024-11-06 23:46:15,846 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2024-11-06 23:46:15,847 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 8 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 23:46:15,847 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 172 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 23:46:15,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-06 23:46:15,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 30. [2024-11-06 23:46:15,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 22 states have internal predecessors, (23), 3 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-06 23:46:15,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2024-11-06 23:46:15,854 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 26 [2024-11-06 23:46:15,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:46:15,854 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2024-11-06 23:46:15,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 1.85) internal successors, (37), 16 states have internal predecessors, (37), 7 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-06 23:46:15,854 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2024-11-06 23:46:15,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-06 23:46:15,854 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:46:15,854 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:46:15,868 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-06 23:46:16,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:46:16,055 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:46:16,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:46:16,056 INFO L85 PathProgramCache]: Analyzing trace with hash 550160832, now seen corresponding path program 1 times [2024-11-06 23:46:16,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:46:16,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292852875] [2024-11-06 23:46:16,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:46:16,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:46:16,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:16,214 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:16,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:16,286 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:16,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:16,355 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:16,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:16,410 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:16,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:16,464 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-06 23:46:16,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:46:16,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292852875] [2024-11-06 23:46:16,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292852875] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 23:46:16,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80293473] [2024-11-06 23:46:16,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:46:16,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:46:16,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:46:16,466 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 23:46:16,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-06 23:46:16,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:16,503 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-06 23:46:16,505 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:46:16,610 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-06 23:46:16,610 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:46:17,149 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-06 23:46:17,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80293473] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 23:46:17,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 23:46:17,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 15] total 24 [2024-11-06 23:46:17,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833437290] [2024-11-06 23:46:17,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 23:46:17,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-06 23:46:17,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:46:17,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-06 23:46:17,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2024-11-06 23:46:17,151 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 24 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 17 states have internal predecessors, (41), 7 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-06 23:46:17,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:46:17,408 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2024-11-06 23:46:17,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-06 23:46:17,408 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 17 states have internal predecessors, (41), 7 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 33 [2024-11-06 23:46:17,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:46:17,409 INFO L225 Difference]: With dead ends: 45 [2024-11-06 23:46:17,410 INFO L226 Difference]: Without dead ends: 41 [2024-11-06 23:46:17,411 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=757, Unknown=0, NotChecked=0, Total=870 [2024-11-06 23:46:17,412 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 8 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 23:46:17,413 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 223 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 23:46:17,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-06 23:46:17,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 33. [2024-11-06 23:46:17,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 24 states have internal predecessors, (25), 3 states have call successors, (3), 2 states have call predecessors, (3), 6 states have return successors, (7), 6 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-06 23:46:17,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2024-11-06 23:46:17,421 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 33 [2024-11-06 23:46:17,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:46:17,422 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2024-11-06 23:46:17,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 17 states have internal predecessors, (41), 7 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-06 23:46:17,423 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2024-11-06 23:46:17,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-06 23:46:17,423 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:46:17,423 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:46:17,450 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 23:46:17,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:46:17,624 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:46:17,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:46:17,624 INFO L85 PathProgramCache]: Analyzing trace with hash 780373730, now seen corresponding path program 2 times [2024-11-06 23:46:17,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:46:17,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421168443] [2024-11-06 23:46:17,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:46:17,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:46:17,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:17,769 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:17,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:17,853 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:17,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:17,911 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:17,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:17,964 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:17,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:18,008 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:18,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:18,047 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-06 23:46:18,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:46:18,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421168443] [2024-11-06 23:46:18,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421168443] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 23:46:18,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011624080] [2024-11-06 23:46:18,048 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 23:46:18,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:46:18,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:46:18,050 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 23:46:18,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-06 23:46:18,089 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 23:46:18,089 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 23:46:18,090 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-06 23:46:18,091 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:46:18,198 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-06 23:46:18,199 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:46:18,796 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 23:46:18,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011624080] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 23:46:18,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 23:46:18,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 18] total 28 [2024-11-06 23:46:18,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443377916] [2024-11-06 23:46:18,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 23:46:18,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-06 23:46:18,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:46:18,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-06 23:46:18,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2024-11-06 23:46:18,799 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 28 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 20 states have internal predecessors, (47), 9 states have call successors, (9), 1 states have call predecessors, (9), 6 states have return successors, (11), 8 states have call predecessors, (11), 9 states have call successors, (11) [2024-11-06 23:46:19,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:46:19,076 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2024-11-06 23:46:19,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-06 23:46:19,076 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 20 states have internal predecessors, (47), 9 states have call successors, (9), 1 states have call predecessors, (9), 6 states have return successors, (11), 8 states have call predecessors, (11), 9 states have call successors, (11) Word has length 40 [2024-11-06 23:46:19,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:46:19,077 INFO L225 Difference]: With dead ends: 51 [2024-11-06 23:46:19,077 INFO L226 Difference]: Without dead ends: 47 [2024-11-06 23:46:19,077 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=148, Invalid=1112, Unknown=0, NotChecked=0, Total=1260 [2024-11-06 23:46:19,078 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 16 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 23:46:19,078 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 259 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 23:46:19,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-06 23:46:19,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 36. [2024-11-06 23:46:19,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 25 states have (on average 1.08) internal successors, (27), 26 states have internal predecessors, (27), 3 states have call successors, (3), 2 states have call predecessors, (3), 7 states have return successors, (8), 7 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-06 23:46:19,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2024-11-06 23:46:19,082 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 40 [2024-11-06 23:46:19,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:46:19,083 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2024-11-06 23:46:19,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 20 states have internal predecessors, (47), 9 states have call successors, (9), 1 states have call predecessors, (9), 6 states have return successors, (11), 8 states have call predecessors, (11), 9 states have call successors, (11) [2024-11-06 23:46:19,083 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2024-11-06 23:46:19,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-06 23:46:19,083 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:46:19,084 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:46:19,099 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-06 23:46:19,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:46:19,284 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:46:19,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:46:19,285 INFO L85 PathProgramCache]: Analyzing trace with hash 866829402, now seen corresponding path program 2 times [2024-11-06 23:46:19,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:46:19,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335233869] [2024-11-06 23:46:19,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:46:19,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:46:19,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:19,384 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:19,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:19,474 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:19,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:19,552 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:19,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:19,610 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:19,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:19,655 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:19,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:19,698 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:19,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:19,733 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-06 23:46:19,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:46:19,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335233869] [2024-11-06 23:46:19,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335233869] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 23:46:19,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893062535] [2024-11-06 23:46:19,734 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 23:46:19,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:46:19,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:46:19,737 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 23:46:19,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-06 23:46:19,775 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 23:46:19,775 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 23:46:19,777 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-06 23:46:19,780 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:46:19,892 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-06 23:46:19,892 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:46:20,608 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-06 23:46:20,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893062535] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 23:46:20,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 23:46:20,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 21] total 30 [2024-11-06 23:46:20,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432763874] [2024-11-06 23:46:20,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 23:46:20,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-06 23:46:20,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:46:20,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-06 23:46:20,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=778, Unknown=0, NotChecked=0, Total=870 [2024-11-06 23:46:20,611 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand has 30 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 21 states have internal predecessors, (51), 9 states have call successors, (9), 1 states have call predecessors, (9), 7 states have return successors, (13), 9 states have call predecessors, (13), 9 states have call successors, (13) [2024-11-06 23:46:20,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:46:20,964 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2024-11-06 23:46:20,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-06 23:46:20,965 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 21 states have internal predecessors, (51), 9 states have call successors, (9), 1 states have call predecessors, (9), 7 states have return successors, (13), 9 states have call predecessors, (13), 9 states have call successors, (13) Word has length 47 [2024-11-06 23:46:20,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:46:20,965 INFO L225 Difference]: With dead ends: 57 [2024-11-06 23:46:20,965 INFO L226 Difference]: Without dead ends: 53 [2024-11-06 23:46:20,966 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=172, Invalid=1388, Unknown=0, NotChecked=0, Total=1560 [2024-11-06 23:46:20,966 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 16 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 23:46:20,967 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 359 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 23:46:20,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-06 23:46:20,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 39. [2024-11-06 23:46:20,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 28 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 8 states have return successors, (9), 8 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-06 23:46:20,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2024-11-06 23:46:20,971 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 47 [2024-11-06 23:46:20,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:46:20,971 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2024-11-06 23:46:20,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 21 states have internal predecessors, (51), 9 states have call successors, (9), 1 states have call predecessors, (9), 7 states have return successors, (13), 9 states have call predecessors, (13), 9 states have call successors, (13) [2024-11-06 23:46:20,971 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2024-11-06 23:46:20,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-06 23:46:20,971 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:46:20,971 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:46:20,983 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 23:46:21,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-06 23:46:21,172 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:46:21,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:46:21,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1271721844, now seen corresponding path program 3 times [2024-11-06 23:46:21,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:46:21,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888234012] [2024-11-06 23:46:21,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:46:21,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:46:21,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:21,281 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:21,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:21,383 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:21,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:21,448 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:21,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:21,500 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:21,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:21,550 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:21,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:21,593 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:21,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:21,634 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:21,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:21,684 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-06 23:46:21,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:46:21,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888234012] [2024-11-06 23:46:21,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888234012] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 23:46:21,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192858502] [2024-11-06 23:46:21,685 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-06 23:46:21,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:46:21,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:46:21,687 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 23:46:21,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-06 23:46:21,729 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-06 23:46:21,729 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 23:46:21,730 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-06 23:46:21,732 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:46:21,880 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-06 23:46:21,881 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:46:22,814 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-06 23:46:22,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192858502] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 23:46:22,814 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 23:46:22,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 24] total 34 [2024-11-06 23:46:22,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188467412] [2024-11-06 23:46:22,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 23:46:22,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-06 23:46:22,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:46:22,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-06 23:46:22,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1012, Unknown=0, NotChecked=0, Total=1122 [2024-11-06 23:46:22,816 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 34 states, 32 states have (on average 1.78125) internal successors, (57), 24 states have internal predecessors, (57), 11 states have call successors, (11), 1 states have call predecessors, (11), 8 states have return successors, (15), 10 states have call predecessors, (15), 11 states have call successors, (15) [2024-11-06 23:46:23,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:46:23,131 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2024-11-06 23:46:23,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-06 23:46:23,132 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 32 states have (on average 1.78125) internal successors, (57), 24 states have internal predecessors, (57), 11 states have call successors, (11), 1 states have call predecessors, (11), 8 states have return successors, (15), 10 states have call predecessors, (15), 11 states have call successors, (15) Word has length 54 [2024-11-06 23:46:23,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:46:23,133 INFO L225 Difference]: With dead ends: 63 [2024-11-06 23:46:23,133 INFO L226 Difference]: Without dead ends: 59 [2024-11-06 23:46:23,133 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=212, Invalid=1858, Unknown=0, NotChecked=0, Total=2070 [2024-11-06 23:46:23,133 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 26 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 23:46:23,134 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 340 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 23:46:23,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-06 23:46:23,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 42. [2024-11-06 23:46:23,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 30 states have internal predecessors, (31), 3 states have call successors, (3), 2 states have call predecessors, (3), 9 states have return successors, (10), 9 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-06 23:46:23,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2024-11-06 23:46:23,139 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 54 [2024-11-06 23:46:23,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:46:23,139 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2024-11-06 23:46:23,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 32 states have (on average 1.78125) internal successors, (57), 24 states have internal predecessors, (57), 11 states have call successors, (11), 1 states have call predecessors, (11), 8 states have return successors, (15), 10 states have call predecessors, (15), 11 states have call successors, (15) [2024-11-06 23:46:23,139 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2024-11-06 23:46:23,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-06 23:46:23,139 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:46:23,139 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:46:23,151 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-06 23:46:23,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-06 23:46:23,343 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:46:23,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:46:23,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1194008948, now seen corresponding path program 3 times [2024-11-06 23:46:23,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:46:23,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43610632] [2024-11-06 23:46:23,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:46:23,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:46:23,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:23,466 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:23,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:23,553 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:23,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:23,634 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:23,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:23,696 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:23,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:23,753 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:23,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:23,805 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:23,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:23,859 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:23,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:23,905 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:23,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:23,946 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-06 23:46:23,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:46:23,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43610632] [2024-11-06 23:46:23,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43610632] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 23:46:23,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610482817] [2024-11-06 23:46:23,946 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-06 23:46:23,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:46:23,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:46:23,949 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 23:46:23,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-06 23:46:23,993 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-06 23:46:23,994 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 23:46:23,995 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-11-06 23:46:23,996 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:46:24,105 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-06 23:46:24,105 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:46:25,039 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-06 23:46:25,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610482817] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 23:46:25,039 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 23:46:25,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 27] total 36 [2024-11-06 23:46:25,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73058343] [2024-11-06 23:46:25,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 23:46:25,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-06 23:46:25,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:46:25,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-06 23:46:25,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1145, Unknown=0, NotChecked=0, Total=1260 [2024-11-06 23:46:25,040 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand has 36 states, 35 states have (on average 1.7428571428571429) internal successors, (61), 25 states have internal predecessors, (61), 11 states have call successors, (11), 1 states have call predecessors, (11), 9 states have return successors, (17), 11 states have call predecessors, (17), 11 states have call successors, (17) [2024-11-06 23:46:25,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:46:25,473 INFO L93 Difference]: Finished difference Result 69 states and 71 transitions. [2024-11-06 23:46:25,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-06 23:46:25,474 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 1.7428571428571429) internal successors, (61), 25 states have internal predecessors, (61), 11 states have call successors, (11), 1 states have call predecessors, (11), 9 states have return successors, (17), 11 states have call predecessors, (17), 11 states have call successors, (17) Word has length 61 [2024-11-06 23:46:25,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:46:25,475 INFO L225 Difference]: With dead ends: 69 [2024-11-06 23:46:25,475 INFO L226 Difference]: Without dead ends: 65 [2024-11-06 23:46:25,475 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=241, Invalid=2209, Unknown=0, NotChecked=0, Total=2450 [2024-11-06 23:46:25,476 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 24 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 656 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-06 23:46:25,476 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 401 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 656 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-06 23:46:25,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-06 23:46:25,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 45. [2024-11-06 23:46:25,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 31 states have (on average 1.064516129032258) internal successors, (33), 32 states have internal predecessors, (33), 3 states have call successors, (3), 2 states have call predecessors, (3), 10 states have return successors, (11), 10 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-06 23:46:25,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2024-11-06 23:46:25,481 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 61 [2024-11-06 23:46:25,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:46:25,481 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2024-11-06 23:46:25,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 1.7428571428571429) internal successors, (61), 25 states have internal predecessors, (61), 11 states have call successors, (11), 1 states have call predecessors, (11), 9 states have return successors, (17), 11 states have call predecessors, (17), 11 states have call successors, (17) [2024-11-06 23:46:25,481 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2024-11-06 23:46:25,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-06 23:46:25,482 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:46:25,482 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:46:25,495 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-06 23:46:25,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-06 23:46:25,682 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:46:25,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:46:25,683 INFO L85 PathProgramCache]: Analyzing trace with hash 809184438, now seen corresponding path program 4 times [2024-11-06 23:46:25,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:46:25,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829839117] [2024-11-06 23:46:25,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:46:25,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:46:25,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:25,830 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:25,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:25,913 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:25,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:25,991 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:25,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:26,052 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:26,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:26,107 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:26,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:26,161 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:26,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:26,212 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:26,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:26,263 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:26,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:26,308 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:26,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:26,358 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-06 23:46:26,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:46:26,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829839117] [2024-11-06 23:46:26,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829839117] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 23:46:26,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106953383] [2024-11-06 23:46:26,359 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-06 23:46:26,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:46:26,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:46:26,362 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 23:46:26,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-06 23:46:26,415 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-06 23:46:26,415 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 23:46:26,416 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-11-06 23:46:26,419 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:46:26,588 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-06 23:46:26,588 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:46:27,628 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-06 23:46:27,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106953383] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 23:46:27,628 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 23:46:27,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 30] total 40 [2024-11-06 23:46:27,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324033191] [2024-11-06 23:46:27,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 23:46:27,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-06 23:46:27,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:46:27,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-06 23:46:27,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1428, Unknown=0, NotChecked=0, Total=1560 [2024-11-06 23:46:27,630 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand has 40 states, 38 states have (on average 1.763157894736842) internal successors, (67), 28 states have internal predecessors, (67), 13 states have call successors, (13), 1 states have call predecessors, (13), 10 states have return successors, (19), 12 states have call predecessors, (19), 13 states have call successors, (19) [2024-11-06 23:46:28,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:46:28,099 INFO L93 Difference]: Finished difference Result 75 states and 77 transitions. [2024-11-06 23:46:28,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-06 23:46:28,100 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 38 states have (on average 1.763157894736842) internal successors, (67), 28 states have internal predecessors, (67), 13 states have call successors, (13), 1 states have call predecessors, (13), 10 states have return successors, (19), 12 states have call predecessors, (19), 13 states have call successors, (19) Word has length 68 [2024-11-06 23:46:28,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:46:28,101 INFO L225 Difference]: With dead ends: 75 [2024-11-06 23:46:28,102 INFO L226 Difference]: Without dead ends: 71 [2024-11-06 23:46:28,103 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=284, Invalid=2796, Unknown=0, NotChecked=0, Total=3080 [2024-11-06 23:46:28,103 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 48 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 23:46:28,103 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 420 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 23:46:28,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-06 23:46:28,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 48. [2024-11-06 23:46:28,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 34 states have internal predecessors, (35), 3 states have call successors, (3), 2 states have call predecessors, (3), 11 states have return successors, (12), 11 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-06 23:46:28,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2024-11-06 23:46:28,114 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 68 [2024-11-06 23:46:28,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:46:28,114 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2024-11-06 23:46:28,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 38 states have (on average 1.763157894736842) internal successors, (67), 28 states have internal predecessors, (67), 13 states have call successors, (13), 1 states have call predecessors, (13), 10 states have return successors, (19), 12 states have call predecessors, (19), 13 states have call successors, (19) [2024-11-06 23:46:28,114 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2024-11-06 23:46:28,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-06 23:46:28,115 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:46:28,115 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:46:28,128 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 23:46:28,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:46:28,315 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:46:28,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:46:28,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1512865522, now seen corresponding path program 4 times [2024-11-06 23:46:28,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:46:28,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578742343] [2024-11-06 23:46:28,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:46:28,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:46:28,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:28,457 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:28,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:28,543 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:28,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:28,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:28,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:28,695 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:28,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:28,756 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:28,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:28,815 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:28,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:28,868 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:28,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:28,917 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:28,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:28,965 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:28,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:29,012 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:29,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:29,059 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-06 23:46:29,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:46:29,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578742343] [2024-11-06 23:46:29,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578742343] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 23:46:29,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047818635] [2024-11-06 23:46:29,059 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-06 23:46:29,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:46:29,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:46:29,064 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 23:46:29,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-06 23:46:29,119 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-06 23:46:29,119 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 23:46:29,120 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 88 conjuncts are in the unsatisfiable core [2024-11-06 23:46:29,122 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:46:29,258 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-06 23:46:29,259 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:46:30,519 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-06 23:46:30,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047818635] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 23:46:30,519 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 23:46:30,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 33] total 42 [2024-11-06 23:46:30,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942353193] [2024-11-06 23:46:30,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 23:46:30,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-06 23:46:30,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:46:30,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-06 23:46:30,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1585, Unknown=0, NotChecked=0, Total=1722 [2024-11-06 23:46:30,521 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand has 42 states, 41 states have (on average 1.7317073170731707) internal successors, (71), 29 states have internal predecessors, (71), 13 states have call successors, (13), 1 states have call predecessors, (13), 11 states have return successors, (21), 13 states have call predecessors, (21), 13 states have call successors, (21) [2024-11-06 23:46:31,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:46:31,035 INFO L93 Difference]: Finished difference Result 81 states and 83 transitions. [2024-11-06 23:46:31,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-06 23:46:31,036 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 1.7317073170731707) internal successors, (71), 29 states have internal predecessors, (71), 13 states have call successors, (13), 1 states have call predecessors, (13), 11 states have return successors, (21), 13 states have call predecessors, (21), 13 states have call successors, (21) Word has length 75 [2024-11-06 23:46:31,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:46:31,036 INFO L225 Difference]: With dead ends: 81 [2024-11-06 23:46:31,037 INFO L226 Difference]: Without dead ends: 77 [2024-11-06 23:46:31,037 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=317, Invalid=3223, Unknown=0, NotChecked=0, Total=3540 [2024-11-06 23:46:31,038 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 14 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-06 23:46:31,038 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 510 Invalid, 829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-06 23:46:31,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-06 23:46:31,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 51. [2024-11-06 23:46:31,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 36 states have internal predecessors, (37), 3 states have call successors, (3), 2 states have call predecessors, (3), 12 states have return successors, (13), 12 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-06 23:46:31,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2024-11-06 23:46:31,045 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 75 [2024-11-06 23:46:31,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:46:31,045 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2024-11-06 23:46:31,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 1.7317073170731707) internal successors, (71), 29 states have internal predecessors, (71), 13 states have call successors, (13), 1 states have call predecessors, (13), 11 states have return successors, (21), 13 states have call predecessors, (21), 13 states have call successors, (21) [2024-11-06 23:46:31,045 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2024-11-06 23:46:31,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-06 23:46:31,045 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:46:31,045 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:46:31,058 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-06 23:46:31,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:46:31,246 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:46:31,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:46:31,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1531804832, now seen corresponding path program 5 times [2024-11-06 23:46:31,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:46:31,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319685156] [2024-11-06 23:46:31,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:46:31,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:46:31,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:31,415 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:31,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:31,519 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:31,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:31,616 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:31,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:31,688 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:31,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:31,757 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:31,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:31,830 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:31,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:31,897 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:31,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:31,974 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:31,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:32,029 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:32,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:32,080 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:32,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:32,130 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:32,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:32,172 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-06 23:46:32,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:46:32,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319685156] [2024-11-06 23:46:32,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319685156] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 23:46:32,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800128698] [2024-11-06 23:46:32,173 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-06 23:46:32,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:46:32,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:46:32,174 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 23:46:32,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-06 23:46:32,224 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-06 23:46:32,224 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 23:46:32,226 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-11-06 23:46:32,227 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:46:32,384 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-11-06 23:46:32,385 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:46:33,767 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-06 23:46:33,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800128698] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 23:46:33,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 23:46:33,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28, 36] total 46 [2024-11-06 23:46:33,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478143607] [2024-11-06 23:46:33,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 23:46:33,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-06 23:46:33,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:46:33,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-06 23:46:33,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1916, Unknown=0, NotChecked=0, Total=2070 [2024-11-06 23:46:33,769 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand has 46 states, 44 states have (on average 1.75) internal successors, (77), 32 states have internal predecessors, (77), 15 states have call successors, (15), 1 states have call predecessors, (15), 12 states have return successors, (23), 14 states have call predecessors, (23), 15 states have call successors, (23) [2024-11-06 23:46:34,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:46:34,333 INFO L93 Difference]: Finished difference Result 87 states and 89 transitions. [2024-11-06 23:46:34,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-06 23:46:34,333 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 44 states have (on average 1.75) internal successors, (77), 32 states have internal predecessors, (77), 15 states have call successors, (15), 1 states have call predecessors, (15), 12 states have return successors, (23), 14 states have call predecessors, (23), 15 states have call successors, (23) Word has length 82 [2024-11-06 23:46:34,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:46:34,334 INFO L225 Difference]: With dead ends: 87 [2024-11-06 23:46:34,334 INFO L226 Difference]: Without dead ends: 83 [2024-11-06 23:46:34,335 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 501 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=364, Invalid=3926, Unknown=0, NotChecked=0, Total=4290 [2024-11-06 23:46:34,335 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 26 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-06 23:46:34,335 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 634 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 857 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-06 23:46:34,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-06 23:46:34,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 54. [2024-11-06 23:46:34,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 37 states have (on average 1.054054054054054) internal successors, (39), 38 states have internal predecessors, (39), 3 states have call successors, (3), 2 states have call predecessors, (3), 13 states have return successors, (14), 13 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-06 23:46:34,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2024-11-06 23:46:34,351 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 82 [2024-11-06 23:46:34,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:46:34,351 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2024-11-06 23:46:34,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 44 states have (on average 1.75) internal successors, (77), 32 states have internal predecessors, (77), 15 states have call successors, (15), 1 states have call predecessors, (15), 12 states have return successors, (23), 14 states have call predecessors, (23), 15 states have call successors, (23) [2024-11-06 23:46:34,351 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2024-11-06 23:46:34,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-06 23:46:34,356 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:46:34,356 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:46:34,369 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-06 23:46:34,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:46:34,557 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:46:34,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:46:34,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1881963736, now seen corresponding path program 5 times [2024-11-06 23:46:34,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:46:34,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902309669] [2024-11-06 23:46:34,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:46:34,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:46:34,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:34,703 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:34,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:34,817 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:34,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:34,906 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:34,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:34,986 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:34,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:35,069 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:35,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:35,135 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:35,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:35,196 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:35,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:35,261 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:35,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:35,319 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:35,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:35,372 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:35,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:35,425 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:35,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:35,474 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:35,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:35,513 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 95 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-06 23:46:35,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:46:35,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902309669] [2024-11-06 23:46:35,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902309669] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 23:46:35,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188051107] [2024-11-06 23:46:35,513 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-06 23:46:35,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:46:35,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:46:35,516 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 23:46:35,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-06 23:46:35,574 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-06 23:46:35,574 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 23:46:35,576 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 104 conjuncts are in the unsatisfiable core [2024-11-06 23:46:35,577 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:46:35,723 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-11-06 23:46:35,723 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:46:37,278 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 170 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-06 23:46:37,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188051107] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 23:46:37,279 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 23:46:37,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30, 39] total 48 [2024-11-06 23:46:37,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708260639] [2024-11-06 23:46:37,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 23:46:37,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-06 23:46:37,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:46:37,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-06 23:46:37,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=2097, Unknown=0, NotChecked=0, Total=2256 [2024-11-06 23:46:37,280 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand has 48 states, 47 states have (on average 1.7234042553191489) internal successors, (81), 33 states have internal predecessors, (81), 15 states have call successors, (15), 1 states have call predecessors, (15), 13 states have return successors, (25), 15 states have call predecessors, (25), 15 states have call successors, (25) [2024-11-06 23:46:37,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:46:37,916 INFO L93 Difference]: Finished difference Result 93 states and 95 transitions. [2024-11-06 23:46:37,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-06 23:46:37,916 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.7234042553191489) internal successors, (81), 33 states have internal predecessors, (81), 15 states have call successors, (15), 1 states have call predecessors, (15), 13 states have return successors, (25), 15 states have call predecessors, (25), 15 states have call successors, (25) Word has length 89 [2024-11-06 23:46:37,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:46:37,917 INFO L225 Difference]: With dead ends: 93 [2024-11-06 23:46:37,917 INFO L226 Difference]: Without dead ends: 89 [2024-11-06 23:46:37,918 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=401, Invalid=4429, Unknown=0, NotChecked=0, Total=4830 [2024-11-06 23:46:37,919 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 20 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 979 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-06 23:46:37,919 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 561 Invalid, 992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 979 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-06 23:46:37,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-06 23:46:37,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 57. [2024-11-06 23:46:37,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 40 states have internal predecessors, (41), 3 states have call successors, (3), 2 states have call predecessors, (3), 14 states have return successors, (15), 14 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-06 23:46:37,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2024-11-06 23:46:37,934 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 89 [2024-11-06 23:46:37,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:46:37,934 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2024-11-06 23:46:37,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.7234042553191489) internal successors, (81), 33 states have internal predecessors, (81), 15 states have call successors, (15), 1 states have call predecessors, (15), 13 states have return successors, (25), 15 states have call predecessors, (25), 15 states have call successors, (25) [2024-11-06 23:46:37,934 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2024-11-06 23:46:37,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-06 23:46:37,935 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:46:37,935 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:46:37,953 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-06 23:46:38,135 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,SelfDestructingSolverStorable14 [2024-11-06 23:46:38,135 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:46:38,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:46:38,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1649915018, now seen corresponding path program 6 times [2024-11-06 23:46:38,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:46:38,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323562415] [2024-11-06 23:46:38,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:46:38,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:46:38,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:38,305 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:38,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:38,412 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:38,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:38,516 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:38,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:38,607 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:38,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:38,689 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:38,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:38,788 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:38,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:38,878 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:38,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:38,945 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:38,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:39,003 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:39,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:39,059 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:39,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:39,114 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:39,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:39,166 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:39,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:39,220 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:39,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:39,271 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-11-06 23:46:39,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:46:39,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323562415] [2024-11-06 23:46:39,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323562415] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 23:46:39,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752432217] [2024-11-06 23:46:39,271 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-06 23:46:39,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:46:39,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:46:39,274 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 23:46:39,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-06 23:46:39,339 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-06 23:46:39,339 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 23:46:39,342 INFO L255 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 112 conjuncts are in the unsatisfiable core [2024-11-06 23:46:39,344 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:46:39,532 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2024-11-06 23:46:39,532 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:46:41,273 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-06 23:46:41,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752432217] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 23:46:41,273 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 23:46:41,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32, 42] total 52 [2024-11-06 23:46:41,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837792751] [2024-11-06 23:46:41,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 23:46:41,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-06 23:46:41,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:46:41,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-06 23:46:41,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=2476, Unknown=0, NotChecked=0, Total=2652 [2024-11-06 23:46:41,275 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand has 52 states, 50 states have (on average 1.74) internal successors, (87), 36 states have internal predecessors, (87), 17 states have call successors, (17), 1 states have call predecessors, (17), 14 states have return successors, (27), 16 states have call predecessors, (27), 17 states have call successors, (27) [2024-11-06 23:46:41,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:46:41,948 INFO L93 Difference]: Finished difference Result 99 states and 101 transitions. [2024-11-06 23:46:41,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-06 23:46:41,949 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 50 states have (on average 1.74) internal successors, (87), 36 states have internal predecessors, (87), 17 states have call successors, (17), 1 states have call predecessors, (17), 14 states have return successors, (27), 16 states have call predecessors, (27), 17 states have call successors, (27) Word has length 96 [2024-11-06 23:46:41,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:46:41,950 INFO L225 Difference]: With dead ends: 99 [2024-11-06 23:46:41,950 INFO L226 Difference]: Without dead ends: 95 [2024-11-06 23:46:41,952 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 651 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=452, Invalid=5248, Unknown=0, NotChecked=0, Total=5700 [2024-11-06 23:46:41,954 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 98 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 937 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-06 23:46:41,954 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 638 Invalid, 984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 937 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-06 23:46:41,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-06 23:46:41,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 60. [2024-11-06 23:46:41,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 41 states have (on average 1.048780487804878) internal successors, (43), 42 states have internal predecessors, (43), 3 states have call successors, (3), 2 states have call predecessors, (3), 15 states have return successors, (16), 15 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-06 23:46:41,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2024-11-06 23:46:41,966 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 96 [2024-11-06 23:46:41,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:46:41,967 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2024-11-06 23:46:41,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 50 states have (on average 1.74) internal successors, (87), 36 states have internal predecessors, (87), 17 states have call successors, (17), 1 states have call predecessors, (17), 14 states have return successors, (27), 16 states have call predecessors, (27), 17 states have call successors, (27) [2024-11-06 23:46:41,967 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2024-11-06 23:46:41,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-06 23:46:41,967 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:46:41,967 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:46:41,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-06 23:46:42,168 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,SelfDestructingSolverStorable15 [2024-11-06 23:46:42,168 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:46:42,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:46:42,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1794979902, now seen corresponding path program 6 times [2024-11-06 23:46:42,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:46:42,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550035304] [2024-11-06 23:46:42,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:46:42,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:46:42,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:42,314 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:42,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:42,417 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:42,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:42,532 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:42,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:42,623 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:42,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:42,707 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:42,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:42,785 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:42,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:42,870 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:42,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:42,936 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:42,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:43,000 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:43,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:43,060 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:43,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:43,119 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:43,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:43,173 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:43,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:43,220 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:43,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:43,270 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:43,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:43,331 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2024-11-06 23:46:43,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:46:43,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550035304] [2024-11-06 23:46:43,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550035304] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 23:46:43,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204841862] [2024-11-06 23:46:43,332 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-06 23:46:43,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:46:43,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:46:43,334 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 23:46:43,335 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 23:46:43,409 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-06 23:46:43,409 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 23:46:43,411 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 120 conjuncts are in the unsatisfiable core [2024-11-06 23:46:43,412 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:46:43,572 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-11-06 23:46:43,572 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:46:45,582 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-06 23:46:45,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204841862] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 23:46:45,583 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 23:46:45,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34, 45] total 55 [2024-11-06 23:46:45,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036443234] [2024-11-06 23:46:45,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 23:46:45,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-11-06 23:46:45,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:46:45,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-11-06 23:46:45,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=2785, Unknown=0, NotChecked=0, Total=2970 [2024-11-06 23:46:45,584 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand has 55 states, 53 states have (on average 1.7358490566037736) internal successors, (92), 38 states have internal predecessors, (92), 18 states have call successors, (18), 1 states have call predecessors, (18), 15 states have return successors, (29), 17 states have call predecessors, (29), 18 states have call successors, (29) [2024-11-06 23:46:46,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:46:46,496 INFO L93 Difference]: Finished difference Result 105 states and 107 transitions. [2024-11-06 23:46:46,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-06 23:46:46,496 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 53 states have (on average 1.7358490566037736) internal successors, (92), 38 states have internal predecessors, (92), 18 states have call successors, (18), 1 states have call predecessors, (18), 15 states have return successors, (29), 17 states have call predecessors, (29), 18 states have call successors, (29) Word has length 103 [2024-11-06 23:46:46,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:46:46,498 INFO L225 Difference]: With dead ends: 105 [2024-11-06 23:46:46,499 INFO L226 Difference]: Without dead ends: 101 [2024-11-06 23:46:46,500 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 715 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=497, Invalid=5983, Unknown=0, NotChecked=0, Total=6480 [2024-11-06 23:46:46,500 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 24 mSDsluCounter, 775 mSDsCounter, 0 mSdLazyCounter, 1374 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 1384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-06 23:46:46,501 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 802 Invalid, 1384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1374 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-06 23:46:46,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-06 23:46:46,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 63. [2024-11-06 23:46:46,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 43 states have (on average 1.0465116279069768) internal successors, (45), 44 states have internal predecessors, (45), 3 states have call successors, (3), 2 states have call predecessors, (3), 16 states have return successors, (17), 16 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-06 23:46:46,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2024-11-06 23:46:46,516 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 103 [2024-11-06 23:46:46,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:46:46,516 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 65 transitions. [2024-11-06 23:46:46,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 53 states have (on average 1.7358490566037736) internal successors, (92), 38 states have internal predecessors, (92), 18 states have call successors, (18), 1 states have call predecessors, (18), 15 states have return successors, (29), 17 states have call predecessors, (29), 18 states have call successors, (29) [2024-11-06 23:46:46,516 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 65 transitions. [2024-11-06 23:46:46,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-06 23:46:46,517 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:46:46,517 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:46:46,533 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 23:46:46,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-06 23:46:46,718 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:46:46,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:46:46,718 INFO L85 PathProgramCache]: Analyzing trace with hash 848388148, now seen corresponding path program 7 times [2024-11-06 23:46:46,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:46:46,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406058996] [2024-11-06 23:46:46,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:46:46,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:46:46,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:46,902 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:46,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:47,031 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:47,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:47,150 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:47,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:47,246 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:47,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:47,355 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:47,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:47,478 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:47,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:47,568 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:47,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:47,654 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:47,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:47,728 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:47,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:47,785 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:47,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:47,840 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:47,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:47,902 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:47,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:47,956 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:47,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:48,017 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:48,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:48,075 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:48,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:48,133 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2024-11-06 23:46:48,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:46:48,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406058996] [2024-11-06 23:46:48,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406058996] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 23:46:48,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501835252] [2024-11-06 23:46:48,133 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-06 23:46:48,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:46:48,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:46:48,135 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 23:46:48,136 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 23:46:48,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:48,214 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 128 conjuncts are in the unsatisfiable core [2024-11-06 23:46:48,216 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:46:48,399 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2024-11-06 23:46:48,399 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:46:50,586 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-06 23:46:50,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501835252] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 23:46:50,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 23:46:50,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 36, 48] total 58 [2024-11-06 23:46:50,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496754301] [2024-11-06 23:46:50,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 23:46:50,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-11-06 23:46:50,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:46:50,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-11-06 23:46:50,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=3108, Unknown=0, NotChecked=0, Total=3306 [2024-11-06 23:46:50,588 INFO L87 Difference]: Start difference. First operand 63 states and 65 transitions. Second operand has 58 states, 56 states have (on average 1.7321428571428572) internal successors, (97), 40 states have internal predecessors, (97), 19 states have call successors, (19), 1 states have call predecessors, (19), 16 states have return successors, (31), 18 states have call predecessors, (31), 19 states have call successors, (31) [2024-11-06 23:46:51,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:46:51,443 INFO L93 Difference]: Finished difference Result 111 states and 113 transitions. [2024-11-06 23:46:51,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-06 23:46:51,444 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 56 states have (on average 1.7321428571428572) internal successors, (97), 40 states have internal predecessors, (97), 19 states have call successors, (19), 1 states have call predecessors, (19), 16 states have return successors, (31), 18 states have call predecessors, (31), 19 states have call successors, (31) Word has length 110 [2024-11-06 23:46:51,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:46:51,445 INFO L225 Difference]: With dead ends: 111 [2024-11-06 23:46:51,445 INFO L226 Difference]: Without dead ends: 107 [2024-11-06 23:46:51,446 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 821 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=548, Invalid=6762, Unknown=0, NotChecked=0, Total=7310 [2024-11-06 23:46:51,446 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 88 mSDsluCounter, 847 mSDsCounter, 0 mSdLazyCounter, 1282 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 876 SdHoareTripleChecker+Invalid, 1322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-06 23:46:51,446 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 876 Invalid, 1322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1282 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-06 23:46:51,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-11-06 23:46:51,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 66. [2024-11-06 23:46:51,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 45 states have (on average 1.0444444444444445) internal successors, (47), 46 states have internal predecessors, (47), 3 states have call successors, (3), 2 states have call predecessors, (3), 17 states have return successors, (18), 17 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-06 23:46:51,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 68 transitions. [2024-11-06 23:46:51,456 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 68 transitions. Word has length 110 [2024-11-06 23:46:51,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:46:51,457 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 68 transitions. [2024-11-06 23:46:51,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 56 states have (on average 1.7321428571428572) internal successors, (97), 40 states have internal predecessors, (97), 19 states have call successors, (19), 1 states have call predecessors, (19), 16 states have return successors, (31), 18 states have call predecessors, (31), 19 states have call successors, (31) [2024-11-06 23:46:51,457 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 68 transitions. [2024-11-06 23:46:51,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-06 23:46:51,458 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:46:51,458 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:46:51,474 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 23:46:51,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-06 23:46:51,659 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:46:51,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:46:51,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1860234972, now seen corresponding path program 7 times [2024-11-06 23:46:51,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:46:51,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718681722] [2024-11-06 23:46:51,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:46:51,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:46:51,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:51,825 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:51,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:51,969 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:51,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:52,089 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:52,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:52,203 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:52,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:52,309 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:52,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:52,403 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:52,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:52,489 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:52,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:52,565 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:52,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:52,630 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:52,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:52,696 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:52,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:52,763 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:52,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:52,829 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:52,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:52,880 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:52,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:52,928 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:52,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:52,974 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:52,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:53,034 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:53,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:53,094 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2024-11-06 23:46:53,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:46:53,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718681722] [2024-11-06 23:46:53,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718681722] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 23:46:53,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744852154] [2024-11-06 23:46:53,094 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-06 23:46:53,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:46:53,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:46:53,096 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 23:46:53,097 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 23:46:53,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:53,185 WARN L253 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 136 conjuncts are in the unsatisfiable core [2024-11-06 23:46:53,187 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:46:53,368 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 161 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2024-11-06 23:46:53,368 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:46:55,983 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 322 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-06 23:46:55,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744852154] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 23:46:55,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 23:46:55,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 51] total 60 [2024-11-06 23:46:55,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723723841] [2024-11-06 23:46:55,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 23:46:55,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-06 23:46:55,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:46:55,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-06 23:46:55,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=3337, Unknown=0, NotChecked=0, Total=3540 [2024-11-06 23:46:55,985 INFO L87 Difference]: Start difference. First operand 66 states and 68 transitions. Second operand has 60 states, 59 states have (on average 1.7118644067796611) internal successors, (101), 41 states have internal predecessors, (101), 19 states have call successors, (19), 1 states have call predecessors, (19), 17 states have return successors, (33), 19 states have call predecessors, (33), 19 states have call successors, (33) [2024-11-06 23:46:56,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:46:56,943 INFO L93 Difference]: Finished difference Result 117 states and 119 transitions. [2024-11-06 23:46:56,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-06 23:46:56,943 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 1.7118644067796611) internal successors, (101), 41 states have internal predecessors, (101), 19 states have call successors, (19), 1 states have call predecessors, (19), 17 states have return successors, (33), 19 states have call predecessors, (33), 19 states have call successors, (33) Word has length 117 [2024-11-06 23:46:56,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:46:56,944 INFO L225 Difference]: With dead ends: 117 [2024-11-06 23:46:56,944 INFO L226 Difference]: Without dead ends: 113 [2024-11-06 23:46:56,945 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 779 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=593, Invalid=7417, Unknown=0, NotChecked=0, Total=8010 [2024-11-06 23:46:56,945 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 32 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 1508 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 1529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-06 23:46:56,945 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 855 Invalid, 1529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1508 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-06 23:46:56,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-06 23:46:56,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 69. [2024-11-06 23:46:56,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 47 states have (on average 1.0425531914893618) internal successors, (49), 48 states have internal predecessors, (49), 3 states have call successors, (3), 2 states have call predecessors, (3), 18 states have return successors, (19), 18 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-06 23:46:56,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 71 transitions. [2024-11-06 23:46:56,957 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 71 transitions. Word has length 117 [2024-11-06 23:46:56,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:46:56,957 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 71 transitions. [2024-11-06 23:46:56,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 1.7118644067796611) internal successors, (101), 41 states have internal predecessors, (101), 19 states have call successors, (19), 1 states have call predecessors, (19), 17 states have return successors, (33), 19 states have call predecessors, (33), 19 states have call successors, (33) [2024-11-06 23:46:56,957 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 71 transitions. [2024-11-06 23:46:56,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-06 23:46:56,958 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:46:56,958 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:46:56,970 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 23:46:57,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:46:57,158 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:46:57,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:46:57,159 INFO L85 PathProgramCache]: Analyzing trace with hash 23995998, now seen corresponding path program 8 times [2024-11-06 23:46:57,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:46:57,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731993340] [2024-11-06 23:46:57,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:46:57,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:46:57,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:57,353 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:57,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:57,512 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:57,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:57,637 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:57,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:57,753 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:57,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:57,854 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:57,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:57,948 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:57,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:58,042 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:58,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:58,132 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:58,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:58,237 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:58,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:58,305 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:58,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:58,370 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:58,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:58,429 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:58,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:58,486 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:58,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:58,546 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:58,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:58,601 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:58,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:58,651 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:58,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:58,700 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:46:58,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:46:58,755 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-11-06 23:46:58,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:46:58,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731993340] [2024-11-06 23:46:58,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731993340] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 23:46:58,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088667079] [2024-11-06 23:46:58,755 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 23:46:58,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:46:58,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:46:58,759 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 23:46:58,760 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 23:46:58,852 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 23:46:58,852 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 23:46:58,854 WARN L253 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 144 conjuncts are in the unsatisfiable core [2024-11-06 23:46:58,856 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:46:59,058 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2024-11-06 23:46:59,058 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:47:01,869 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 368 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-06 23:47:01,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088667079] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 23:47:01,869 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 23:47:01,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 40, 54] total 64 [2024-11-06 23:47:01,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126057240] [2024-11-06 23:47:01,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 23:47:01,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-06 23:47:01,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:47:01,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-06 23:47:01,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=3812, Unknown=0, NotChecked=0, Total=4032 [2024-11-06 23:47:01,871 INFO L87 Difference]: Start difference. First operand 69 states and 71 transitions. Second operand has 64 states, 62 states have (on average 1.7258064516129032) internal successors, (107), 44 states have internal predecessors, (107), 21 states have call successors, (21), 1 states have call predecessors, (21), 18 states have return successors, (35), 20 states have call predecessors, (35), 21 states have call successors, (35) [2024-11-06 23:47:02,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:47:02,873 INFO L93 Difference]: Finished difference Result 123 states and 125 transitions. [2024-11-06 23:47:02,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-06 23:47:02,874 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 62 states have (on average 1.7258064516129032) internal successors, (107), 44 states have internal predecessors, (107), 21 states have call successors, (21), 1 states have call predecessors, (21), 18 states have return successors, (35), 20 states have call predecessors, (35), 21 states have call successors, (35) Word has length 124 [2024-11-06 23:47:02,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:47:02,877 INFO L225 Difference]: With dead ends: 123 [2024-11-06 23:47:02,877 INFO L226 Difference]: Without dead ends: 119 [2024-11-06 23:47:02,878 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1011 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=652, Invalid=8468, Unknown=0, NotChecked=0, Total=9120 [2024-11-06 23:47:02,879 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 80 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 1450 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 1484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-06 23:47:02,879 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 963 Invalid, 1484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1450 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-06 23:47:02,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-11-06 23:47:02,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 72. [2024-11-06 23:47:02,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 49 states have (on average 1.0408163265306123) internal successors, (51), 50 states have internal predecessors, (51), 3 states have call successors, (3), 2 states have call predecessors, (3), 19 states have return successors, (20), 19 states have call predecessors, (20), 3 states have call successors, (20) [2024-11-06 23:47:02,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 74 transitions. [2024-11-06 23:47:02,896 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 74 transitions. Word has length 124 [2024-11-06 23:47:02,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:47:02,896 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 74 transitions. [2024-11-06 23:47:02,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 62 states have (on average 1.7258064516129032) internal successors, (107), 44 states have internal predecessors, (107), 21 states have call successors, (21), 1 states have call predecessors, (21), 18 states have return successors, (35), 20 states have call predecessors, (35), 21 states have call successors, (35) [2024-11-06 23:47:02,897 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 74 transitions. [2024-11-06 23:47:02,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-06 23:47:02,897 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:47:02,897 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:47:02,912 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-06 23:47:03,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:47:03,098 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:47:03,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:47:03,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1519753334, now seen corresponding path program 8 times [2024-11-06 23:47:03,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:47:03,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998180668] [2024-11-06 23:47:03,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:47:03,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:47:03,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:03,303 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:03,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:03,457 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:03,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:03,603 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:03,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:03,727 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:03,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:03,853 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:03,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:03,979 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:03,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:04,078 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:04,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:04,167 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:04,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:04,253 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:04,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:04,333 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:04,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:04,418 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:04,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:04,511 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:04,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:04,595 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:04,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:04,671 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:04,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:04,741 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:04,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:04,800 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:04,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:04,855 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:04,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:04,907 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:04,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:04,961 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-06 23:47:04,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:47:04,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998180668] [2024-11-06 23:47:04,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998180668] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 23:47:04,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165580514] [2024-11-06 23:47:04,961 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 23:47:04,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:47:04,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:47:04,963 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 23:47:04,963 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 23:47:05,061 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 23:47:05,062 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 23:47:05,064 WARN L253 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 152 conjuncts are in the unsatisfiable core [2024-11-06 23:47:05,066 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:47:05,266 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 0 proven. 208 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2024-11-06 23:47:05,267 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:47:08,415 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-06 23:47:08,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165580514] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 23:47:08,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 23:47:08,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 42, 57] total 67 [2024-11-06 23:47:08,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838496618] [2024-11-06 23:47:08,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 23:47:08,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-11-06 23:47:08,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:47:08,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-11-06 23:47:08,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=4193, Unknown=0, NotChecked=0, Total=4422 [2024-11-06 23:47:08,416 INFO L87 Difference]: Start difference. First operand 72 states and 74 transitions. Second operand has 67 states, 65 states have (on average 1.7230769230769232) internal successors, (112), 46 states have internal predecessors, (112), 22 states have call successors, (22), 1 states have call predecessors, (22), 19 states have return successors, (37), 21 states have call predecessors, (37), 22 states have call successors, (37) [2024-11-06 23:47:09,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:47:09,665 INFO L93 Difference]: Finished difference Result 129 states and 131 transitions. [2024-11-06 23:47:09,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-06 23:47:09,665 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 65 states have (on average 1.7230769230769232) internal successors, (112), 46 states have internal predecessors, (112), 22 states have call successors, (22), 1 states have call predecessors, (22), 19 states have return successors, (37), 21 states have call predecessors, (37), 22 states have call successors, (37) Word has length 131 [2024-11-06 23:47:09,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:47:09,666 INFO L225 Difference]: With dead ends: 129 [2024-11-06 23:47:09,666 INFO L226 Difference]: Without dead ends: 125 [2024-11-06 23:47:09,667 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1091 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=705, Invalid=9395, Unknown=0, NotChecked=0, Total=10100 [2024-11-06 23:47:09,667 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 30 mSDsluCounter, 1128 mSDsCounter, 0 mSdLazyCounter, 2081 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 1159 SdHoareTripleChecker+Invalid, 2096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-06 23:47:09,667 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 1159 Invalid, 2096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2081 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-06 23:47:09,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-11-06 23:47:09,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 75. [2024-11-06 23:47:09,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 52 states have internal predecessors, (53), 3 states have call successors, (3), 2 states have call predecessors, (3), 20 states have return successors, (21), 20 states have call predecessors, (21), 3 states have call successors, (21) [2024-11-06 23:47:09,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 77 transitions. [2024-11-06 23:47:09,681 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 77 transitions. Word has length 131 [2024-11-06 23:47:09,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:47:09,682 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 77 transitions. [2024-11-06 23:47:09,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 65 states have (on average 1.7230769230769232) internal successors, (112), 46 states have internal predecessors, (112), 22 states have call successors, (22), 1 states have call predecessors, (22), 19 states have return successors, (37), 21 states have call predecessors, (37), 22 states have call successors, (37) [2024-11-06 23:47:09,682 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 77 transitions. [2024-11-06 23:47:09,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-06 23:47:09,683 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:47:09,683 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:47:09,701 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 23:47:09,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:47:09,883 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:47:09,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:47:09,884 INFO L85 PathProgramCache]: Analyzing trace with hash 128231176, now seen corresponding path program 9 times [2024-11-06 23:47:09,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:47:09,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974151924] [2024-11-06 23:47:09,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:47:09,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:47:09,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:10,114 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:10,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:10,315 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:10,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:10,470 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:10,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:10,611 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:10,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:10,748 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:10,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:10,864 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:10,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:10,973 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:10,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:11,076 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:11,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:11,169 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:11,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:11,277 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:11,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:11,365 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:11,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:11,449 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:11,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:11,522 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:11,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:11,586 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:11,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:11,648 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:11,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:11,706 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:11,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:11,770 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:11,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:11,833 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:11,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:11,888 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:11,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:11,942 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 0 proven. 252 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2024-11-06 23:47:11,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:47:11,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974151924] [2024-11-06 23:47:11,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974151924] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 23:47:11,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381823488] [2024-11-06 23:47:11,942 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-06 23:47:11,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:47:11,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:47:11,944 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 23:47:11,944 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 23:47:12,052 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-06 23:47:12,052 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 23:47:12,055 WARN L253 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 160 conjuncts are in the unsatisfiable core [2024-11-06 23:47:12,057 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:47:12,267 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2024-11-06 23:47:12,267 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:47:15,740 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 0 proven. 468 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-06 23:47:15,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381823488] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 23:47:15,740 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 23:47:15,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 44, 60] total 70 [2024-11-06 23:47:15,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030807180] [2024-11-06 23:47:15,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 23:47:15,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2024-11-06 23:47:15,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:47:15,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2024-11-06 23:47:15,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=4588, Unknown=0, NotChecked=0, Total=4830 [2024-11-06 23:47:15,742 INFO L87 Difference]: Start difference. First operand 75 states and 77 transitions. Second operand has 70 states, 68 states have (on average 1.7205882352941178) internal successors, (117), 48 states have internal predecessors, (117), 23 states have call successors, (23), 1 states have call predecessors, (23), 20 states have return successors, (39), 22 states have call predecessors, (39), 23 states have call successors, (39) [2024-11-06 23:47:17,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:47:17,037 INFO L93 Difference]: Finished difference Result 135 states and 137 transitions. [2024-11-06 23:47:17,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-06 23:47:17,039 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 68 states have (on average 1.7205882352941178) internal successors, (117), 48 states have internal predecessors, (117), 23 states have call successors, (23), 1 states have call predecessors, (23), 20 states have return successors, (39), 22 states have call predecessors, (39), 23 states have call successors, (39) Word has length 138 [2024-11-06 23:47:17,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:47:17,040 INFO L225 Difference]: With dead ends: 135 [2024-11-06 23:47:17,040 INFO L226 Difference]: Without dead ends: 131 [2024-11-06 23:47:17,041 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1221 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=764, Invalid=10366, Unknown=0, NotChecked=0, Total=11130 [2024-11-06 23:47:17,042 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 128 mSDsluCounter, 1243 mSDsCounter, 0 mSdLazyCounter, 2025 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 1276 SdHoareTripleChecker+Invalid, 2083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 2025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-06 23:47:17,042 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 1276 Invalid, 2083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 2025 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-06 23:47:17,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-06 23:47:17,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 78. [2024-11-06 23:47:17,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 53 states have (on average 1.0377358490566038) internal successors, (55), 54 states have internal predecessors, (55), 3 states have call successors, (3), 2 states have call predecessors, (3), 21 states have return successors, (22), 21 states have call predecessors, (22), 3 states have call successors, (22) [2024-11-06 23:47:17,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 80 transitions. [2024-11-06 23:47:17,060 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 80 transitions. Word has length 138 [2024-11-06 23:47:17,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:47:17,060 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 80 transitions. [2024-11-06 23:47:17,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 68 states have (on average 1.7205882352941178) internal successors, (117), 48 states have internal predecessors, (117), 23 states have call successors, (23), 1 states have call predecessors, (23), 20 states have return successors, (39), 22 states have call predecessors, (39), 23 states have call successors, (39) [2024-11-06 23:47:17,061 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 80 transitions. [2024-11-06 23:47:17,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-06 23:47:17,061 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:47:17,061 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:47:17,074 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 23:47:17,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:47:17,262 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:47:17,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:47:17,262 INFO L85 PathProgramCache]: Analyzing trace with hash -219126640, now seen corresponding path program 9 times [2024-11-06 23:47:17,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:47:17,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073453406] [2024-11-06 23:47:17,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:47:17,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:47:17,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:17,503 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:17,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:17,710 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:17,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:17,880 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:17,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:18,034 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:18,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:18,187 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:18,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:18,318 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:18,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:18,457 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:18,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:18,573 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:18,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:18,686 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:18,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:18,779 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:18,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:18,865 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:18,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:18,944 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:18,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:19,021 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:19,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:19,089 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:19,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:19,157 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:19,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:19,219 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:19,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:19,281 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:19,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:19,338 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:19,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:19,395 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:19,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:19,450 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:19,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:19,506 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 279 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2024-11-06 23:47:19,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:47:19,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073453406] [2024-11-06 23:47:19,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073453406] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 23:47:19,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592790525] [2024-11-06 23:47:19,507 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-06 23:47:19,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:47:19,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:47:19,508 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 23:47:19,509 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 23:47:19,632 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-06 23:47:19,632 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 23:47:19,634 WARN L253 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 168 conjuncts are in the unsatisfiable core [2024-11-06 23:47:19,636 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:47:19,838 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2024-11-06 23:47:19,838 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:47:23,501 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 522 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-06 23:47:23,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592790525] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 23:47:23,501 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 23:47:23,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46, 63] total 72 [2024-11-06 23:47:23,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453362965] [2024-11-06 23:47:23,502 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 23:47:23,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2024-11-06 23:47:23,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:47:23,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2024-11-06 23:47:23,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=4865, Unknown=0, NotChecked=0, Total=5112 [2024-11-06 23:47:23,503 INFO L87 Difference]: Start difference. First operand 78 states and 80 transitions. Second operand has 72 states, 71 states have (on average 1.704225352112676) internal successors, (121), 49 states have internal predecessors, (121), 23 states have call successors, (23), 1 states have call predecessors, (23), 21 states have return successors, (41), 23 states have call predecessors, (41), 23 states have call successors, (41) [2024-11-06 23:47:24,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:47:24,886 INFO L93 Difference]: Finished difference Result 141 states and 143 transitions. [2024-11-06 23:47:24,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-06 23:47:24,887 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 71 states have (on average 1.704225352112676) internal successors, (121), 49 states have internal predecessors, (121), 23 states have call successors, (23), 1 states have call predecessors, (23), 21 states have return successors, (41), 23 states have call predecessors, (41), 23 states have call successors, (41) Word has length 145 [2024-11-06 23:47:24,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:47:24,888 INFO L225 Difference]: With dead ends: 141 [2024-11-06 23:47:24,888 INFO L226 Difference]: Without dead ends: 137 [2024-11-06 23:47:24,889 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1167 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=817, Invalid=11173, Unknown=0, NotChecked=0, Total=11990 [2024-11-06 23:47:24,889 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 16 mSDsluCounter, 1206 mSDsCounter, 0 mSdLazyCounter, 2229 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 1239 SdHoareTripleChecker+Invalid, 2237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 2229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-06 23:47:24,890 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 1239 Invalid, 2237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 2229 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-06 23:47:24,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-11-06 23:47:24,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 81. [2024-11-06 23:47:24,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 55 states have (on average 1.0363636363636364) internal successors, (57), 56 states have internal predecessors, (57), 3 states have call successors, (3), 2 states have call predecessors, (3), 22 states have return successors, (23), 22 states have call predecessors, (23), 3 states have call successors, (23) [2024-11-06 23:47:24,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 83 transitions. [2024-11-06 23:47:24,908 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 83 transitions. Word has length 145 [2024-11-06 23:47:24,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:47:24,908 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 83 transitions. [2024-11-06 23:47:24,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 71 states have (on average 1.704225352112676) internal successors, (121), 49 states have internal predecessors, (121), 23 states have call successors, (23), 1 states have call predecessors, (23), 21 states have return successors, (41), 23 states have call predecessors, (41), 23 states have call successors, (41) [2024-11-06 23:47:24,909 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 83 transitions. [2024-11-06 23:47:24,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-06 23:47:24,909 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:47:24,909 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:47:24,922 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 23:47:25,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:47:25,113 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:47:25,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:47:25,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1955824178, now seen corresponding path program 10 times [2024-11-06 23:47:25,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:47:25,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181270333] [2024-11-06 23:47:25,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:47:25,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:47:25,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:25,379 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:25,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:25,585 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:25,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:25,782 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:25,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:25,954 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:25,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:26,104 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:26,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:26,246 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:26,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:26,393 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:26,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:26,582 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:26,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:26,727 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:26,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:26,834 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:26,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:26,930 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:26,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:27,018 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:27,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:27,100 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:27,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:27,178 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:27,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:27,250 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:27,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:27,330 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:27,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:27,396 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:27,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:27,458 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:27,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:27,519 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:27,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:27,579 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:27,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:27,637 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:27,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:27,695 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2024-11-06 23:47:27,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:47:27,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181270333] [2024-11-06 23:47:27,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181270333] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 23:47:27,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67027951] [2024-11-06 23:47:27,696 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-06 23:47:27,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:47:27,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:47:27,698 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 23:47:27,699 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 23:47:27,832 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-06 23:47:27,833 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 23:47:27,835 WARN L253 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 176 conjuncts are in the unsatisfiable core [2024-11-06 23:47:27,838 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:47:28,065 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 0 proven. 290 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2024-11-06 23:47:28,065 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:47:32,253 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-06 23:47:32,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67027951] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 23:47:32,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 23:47:32,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 48, 66] total 76 [2024-11-06 23:47:32,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462405677] [2024-11-06 23:47:32,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 23:47:32,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2024-11-06 23:47:32,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:47:32,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2024-11-06 23:47:32,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=5436, Unknown=0, NotChecked=0, Total=5700 [2024-11-06 23:47:32,255 INFO L87 Difference]: Start difference. First operand 81 states and 83 transitions. Second operand has 76 states, 74 states have (on average 1.7162162162162162) internal successors, (127), 52 states have internal predecessors, (127), 25 states have call successors, (25), 1 states have call predecessors, (25), 22 states have return successors, (43), 24 states have call predecessors, (43), 25 states have call successors, (43) [2024-11-06 23:47:33,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:47:33,722 INFO L93 Difference]: Finished difference Result 147 states and 149 transitions. [2024-11-06 23:47:33,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-06 23:47:33,723 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 74 states have (on average 1.7162162162162162) internal successors, (127), 52 states have internal predecessors, (127), 25 states have call successors, (25), 1 states have call predecessors, (25), 22 states have return successors, (43), 24 states have call predecessors, (43), 25 states have call successors, (43) Word has length 152 [2024-11-06 23:47:33,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:47:33,724 INFO L225 Difference]: With dead ends: 147 [2024-11-06 23:47:33,724 INFO L226 Difference]: Without dead ends: 143 [2024-11-06 23:47:33,724 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 317 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1451 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=884, Invalid=12456, Unknown=0, NotChecked=0, Total=13340 [2024-11-06 23:47:33,725 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 94 mSDsluCounter, 1285 mSDsCounter, 0 mSdLazyCounter, 2199 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 1320 SdHoareTripleChecker+Invalid, 2237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 2199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-06 23:47:33,725 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 1320 Invalid, 2237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 2199 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-06 23:47:33,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-11-06 23:47:33,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 84. [2024-11-06 23:47:33,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 57 states have (on average 1.0350877192982457) internal successors, (59), 58 states have internal predecessors, (59), 3 states have call successors, (3), 2 states have call predecessors, (3), 23 states have return successors, (24), 23 states have call predecessors, (24), 3 states have call successors, (24) [2024-11-06 23:47:33,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 86 transitions. [2024-11-06 23:47:33,743 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 86 transitions. Word has length 152 [2024-11-06 23:47:33,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:47:33,743 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 86 transitions. [2024-11-06 23:47:33,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 74 states have (on average 1.7162162162162162) internal successors, (127), 52 states have internal predecessors, (127), 25 states have call successors, (25), 1 states have call predecessors, (25), 22 states have return successors, (43), 24 states have call predecessors, (43), 25 states have call successors, (43) [2024-11-06 23:47:33,743 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 86 transitions. [2024-11-06 23:47:33,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-06 23:47:33,744 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:47:33,744 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:47:33,758 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-06 23:47:33,944 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 23:47:33,945 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:47:33,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:47:33,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1972833494, now seen corresponding path program 10 times [2024-11-06 23:47:33,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:47:33,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053544854] [2024-11-06 23:47:33,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:47:33,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:47:33,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:34,218 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:34,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:34,436 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:34,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:34,676 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:34,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:34,865 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:34,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:35,047 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:35,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:35,209 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:35,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:35,417 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:35,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:35,551 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:35,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:35,669 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:35,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:35,786 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:35,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:35,897 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:35,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:35,995 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:35,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:36,094 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:36,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:36,177 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:36,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:36,255 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:36,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:36,328 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:36,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:36,417 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:36,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:36,511 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:36,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:36,584 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:36,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:36,656 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:36,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:36,726 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:36,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:36,789 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 23:47:36,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:47:36,849 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 0 proven. 340 refuted. 0 times theorem prover too weak. 410 trivial. 0 not checked. [2024-11-06 23:47:36,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:47:36,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053544854] [2024-11-06 23:47:36,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053544854] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 23:47:36,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290264031] [2024-11-06 23:47:36,849 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-06 23:47:36,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:47:36,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:47:36,851 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 23:47:36,852 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 23:47:36,993 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-06 23:47:36,993 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 23:47:36,995 WARN L253 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 184 conjuncts are in the unsatisfiable core [2024-11-06 23:47:36,998 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:47:37,224 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2024-11-06 23:47:37,224 INFO L311 TraceCheckSpWp]: Computing backward predicates...