./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/reducercommutativity/rangesum40.i --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/reducercommutativity/rangesum40.i', '-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', 'a418834dbd1069728d4982a06f4275da717a1d93e3d5061fbbc21c5c3a319ddf'] 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/reducercommutativity/rangesum40.i -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 a418834dbd1069728d4982a06f4275da717a1d93e3d5061fbbc21c5c3a319ddf --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-06 18:19:27,013 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 18:19:27,108 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-06 18:19:27,113 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 18:19:27,113 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 18:19:27,131 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 18:19:27,132 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 18:19:27,132 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 18:19:27,132 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 18:19:27,132 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 18:19:27,133 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 18:19:27,133 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 18:19:27,133 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 18:19:27,133 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 18:19:27,133 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 18:19:27,133 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 18:19:27,133 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 18:19:27,134 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-06 18:19:27,134 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-06 18:19:27,134 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-06 18:19:27,134 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 18:19:27,134 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 18:19:27,134 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 18:19:27,134 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 18:19:27,134 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 18:19:27,134 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-06 18:19:27,134 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 18:19:27,135 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 18:19:27,135 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 18:19:27,135 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 18:19:27,135 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 18:19:27,135 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 18:19:27,135 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 18:19:27,135 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 18:19:27,135 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 18:19:27,136 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 18:19:27,136 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-06 18:19:27,136 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-06 18:19:27,136 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 18:19:27,136 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 18:19:27,136 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 18:19:27,136 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 18:19:27,136 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 -> a418834dbd1069728d4982a06f4275da717a1d93e3d5061fbbc21c5c3a319ddf [2024-11-06 18:19:27,414 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 18:19:27,422 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 18:19:27,424 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 18:19:27,425 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 18:19:27,426 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 18:19:27,427 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/reducercommutativity/rangesum40.i [2024-11-06 18:19:28,902 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 18:19:29,162 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 18:19:29,162 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/reducercommutativity/rangesum40.i [2024-11-06 18:19:29,169 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/277e0cf12/e8f540688cf6497980ebdf37a9b9dc21/FLAG3d86e8085 [2024-11-06 18:19:29,488 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/277e0cf12/e8f540688cf6497980ebdf37a9b9dc21 [2024-11-06 18:19:29,491 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 18:19:29,492 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-06 18:19:29,493 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 18:19:29,493 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 18:19:29,497 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 18:19:29,498 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:19:29" (1/1) ... [2024-11-06 18:19:29,499 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1461586 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:19:29, skipping insertion in model container [2024-11-06 18:19:29,499 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:19:29" (1/1) ... [2024-11-06 18:19:29,511 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 18:19:29,644 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/reducercommutativity/rangesum40.i[1465,1478] [2024-11-06 18:19:29,648 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 18:19:29,656 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 18:19:29,673 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/reducercommutativity/rangesum40.i[1465,1478] [2024-11-06 18:19:29,674 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 18:19:29,685 INFO L204 MainTranslator]: Completed translation [2024-11-06 18:19:29,686 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:19:29 WrapperNode [2024-11-06 18:19:29,686 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 18:19:29,687 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 18:19:29,688 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 18:19:29,688 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 18:19:29,693 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:19:29" (1/1) ... [2024-11-06 18:19:29,698 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:19:29" (1/1) ... [2024-11-06 18:19:29,713 INFO L138 Inliner]: procedures = 17, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2024-11-06 18:19:29,713 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 18:19:29,714 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 18:19:29,714 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 18:19:29,714 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 18:19:29,722 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:19:29" (1/1) ... [2024-11-06 18:19:29,722 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:19:29" (1/1) ... [2024-11-06 18:19:29,724 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:19:29" (1/1) ... [2024-11-06 18:19:29,735 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 5 writes are split as follows [0, 5]. [2024-11-06 18:19:29,736 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:19:29" (1/1) ... [2024-11-06 18:19:29,736 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:19:29" (1/1) ... [2024-11-06 18:19:29,741 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:19:29" (1/1) ... [2024-11-06 18:19:29,744 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:19:29" (1/1) ... [2024-11-06 18:19:29,745 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:19:29" (1/1) ... [2024-11-06 18:19:29,746 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:19:29" (1/1) ... [2024-11-06 18:19:29,748 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 18:19:29,748 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 18:19:29,749 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 18:19:29,749 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 18:19:29,750 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:19:29" (1/1) ... [2024-11-06 18:19:29,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 18:19:29,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:19:29,783 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-06 18:19:29,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-06 18:19:29,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 18:19:29,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-06 18:19:29,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-06 18:19:29,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-06 18:19:29,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-06 18:19:29,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-06 18:19:29,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 18:19:29,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 18:19:29,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-06 18:19:29,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-06 18:19:29,813 INFO L130 BoogieDeclarations]: Found specification of procedure rangesum [2024-11-06 18:19:29,813 INFO L138 BoogieDeclarations]: Found implementation of procedure rangesum [2024-11-06 18:19:29,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-06 18:19:29,885 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 18:19:29,887 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 18:19:30,096 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2024-11-06 18:19:30,097 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 18:19:30,110 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 18:19:30,110 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-06 18:19:30,111 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:19:30 BoogieIcfgContainer [2024-11-06 18:19:30,111 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 18:19:30,116 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 18:19:30,116 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 18:19:30,121 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 18:19:30,121 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 06:19:29" (1/3) ... [2024-11-06 18:19:30,122 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7976fb2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:19:30, skipping insertion in model container [2024-11-06 18:19:30,122 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:19:29" (2/3) ... [2024-11-06 18:19:30,122 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7976fb2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:19:30, skipping insertion in model container [2024-11-06 18:19:30,122 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:19:30" (3/3) ... [2024-11-06 18:19:30,123 INFO L112 eAbstractionObserver]: Analyzing ICFG rangesum40.i [2024-11-06 18:19:30,138 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 18:19:30,139 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-06 18:19:30,195 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 18:19:30,206 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;@e6a138f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 18:19:30,208 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-06 18:19:30,213 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 23 states have internal predecessors, (32), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-06 18:19:30,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-06 18:19:30,220 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:19:30,221 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:19:30,222 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:19:30,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:19:30,228 INFO L85 PathProgramCache]: Analyzing trace with hash -275565944, now seen corresponding path program 1 times [2024-11-06 18:19:30,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:19:30,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037294832] [2024-11-06 18:19:30,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:19:30,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:19:30,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:30,545 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-06 18:19:30,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:30,559 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-06 18:19:30,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:30,573 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-06 18:19:30,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:30,587 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-06 18:19:30,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:19:30,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037294832] [2024-11-06 18:19:30,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037294832] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:19:30,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:19:30,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 18:19:30,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121967903] [2024-11-06 18:19:30,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:19:30,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:19:30,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:19:30,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:19:30,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 18:19:30,615 INFO L87 Difference]: Start difference. First operand has 28 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 23 states have internal predecessors, (32), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-06 18:19:30,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:19:30,641 INFO L93 Difference]: Finished difference Result 54 states and 77 transitions. [2024-11-06 18:19:30,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:19:30,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2024-11-06 18:19:30,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:19:30,649 INFO L225 Difference]: With dead ends: 54 [2024-11-06 18:19:30,649 INFO L226 Difference]: Without dead ends: 26 [2024-11-06 18:19:30,652 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 18:19:30,655 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 1 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:19:30,655 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 61 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 18:19:30,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-06 18:19:30,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2024-11-06 18:19:30,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-06 18:19:30,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2024-11-06 18:19:30,686 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 29 [2024-11-06 18:19:30,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:19:30,687 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2024-11-06 18:19:30,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-06 18:19:30,687 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2024-11-06 18:19:30,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-06 18:19:30,689 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:19:30,689 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:19:30,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-06 18:19:30,689 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:19:30,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:19:30,690 INFO L85 PathProgramCache]: Analyzing trace with hash -653100523, now seen corresponding path program 1 times [2024-11-06 18:19:30,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:19:30,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667530667] [2024-11-06 18:19:30,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:19:30,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:19:30,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:30,873 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-06 18:19:30,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:30,902 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-06 18:19:30,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:30,929 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-06 18:19:30,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:30,957 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-06 18:19:30,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:19:30,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667530667] [2024-11-06 18:19:30,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667530667] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:19:30,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276070661] [2024-11-06 18:19:30,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:19:30,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:19:30,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:19:30,966 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:19:30,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-06 18:19:31,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:31,107 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-06 18:19:31,115 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:19:31,143 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-06 18:19:31,150 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 18:19:31,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276070661] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:19:31,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 18:19:31,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-06 18:19:31,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878713006] [2024-11-06 18:19:31,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:19:31,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:19:31,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:19:31,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:19:31,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-06 18:19:31,157 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-06 18:19:31,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:19:31,183 INFO L93 Difference]: Finished difference Result 46 states and 61 transitions. [2024-11-06 18:19:31,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:19:31,184 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2024-11-06 18:19:31,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:19:31,185 INFO L225 Difference]: With dead ends: 46 [2024-11-06 18:19:31,187 INFO L226 Difference]: Without dead ends: 28 [2024-11-06 18:19:31,188 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-06 18:19:31,188 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 2 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:19:31,190 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 51 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 18:19:31,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-06 18:19:31,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2024-11-06 18:19:31,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-06 18:19:31,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2024-11-06 18:19:31,200 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 31 [2024-11-06 18:19:31,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:19:31,200 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2024-11-06 18:19:31,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-06 18:19:31,201 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2024-11-06 18:19:31,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-06 18:19:31,203 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:19:31,204 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:19:31,226 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-06 18:19:31,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:19:31,405 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:19:31,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:19:31,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1081404920, now seen corresponding path program 1 times [2024-11-06 18:19:31,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:19:31,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158690417] [2024-11-06 18:19:31,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:19:31,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:19:31,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:31,585 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-06 18:19:31,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:31,638 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-06 18:19:31,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:31,656 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-06 18:19:31,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:31,677 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-06 18:19:31,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:19:31,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158690417] [2024-11-06 18:19:31,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158690417] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:19:31,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295306452] [2024-11-06 18:19:31,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:19:31,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:19:31,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:19:31,686 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:19:31,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-06 18:19:31,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:31,772 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-06 18:19:31,774 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:19:31,789 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-06 18:19:31,789 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 18:19:31,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295306452] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:19:31,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 18:19:31,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-06 18:19:31,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572321638] [2024-11-06 18:19:31,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:19:31,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:19:31,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:19:31,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:19:31,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-06 18:19:31,795 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-06 18:19:31,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:19:31,815 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2024-11-06 18:19:31,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:19:31,816 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 40 [2024-11-06 18:19:31,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:19:31,817 INFO L225 Difference]: With dead ends: 44 [2024-11-06 18:19:31,817 INFO L226 Difference]: Without dead ends: 29 [2024-11-06 18:19:31,817 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-06 18:19:31,818 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 1 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:19:31,818 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 52 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 18:19:31,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-06 18:19:31,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2024-11-06 18:19:31,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-06 18:19:31,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2024-11-06 18:19:31,829 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 40 [2024-11-06 18:19:31,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:19:31,830 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2024-11-06 18:19:31,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-06 18:19:31,831 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2024-11-06 18:19:31,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-06 18:19:31,833 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:19:31,833 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:19:31,856 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-06 18:19:32,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:19:32,034 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:19:32,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:19:32,035 INFO L85 PathProgramCache]: Analyzing trace with hash -673301430, now seen corresponding path program 1 times [2024-11-06 18:19:32,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:19:32,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732718649] [2024-11-06 18:19:32,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:19:32,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:19:32,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:32,130 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-06 18:19:32,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:32,165 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-06 18:19:32,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:32,179 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-06 18:19:32,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:32,191 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-06 18:19:32,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:19:32,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732718649] [2024-11-06 18:19:32,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732718649] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:19:32,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225313425] [2024-11-06 18:19:32,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:19:32,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:19:32,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:19:32,197 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:19:32,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-06 18:19:32,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:32,299 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-06 18:19:32,301 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:19:32,341 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-06 18:19:32,341 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 18:19:32,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225313425] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:19:32,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 18:19:32,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-06 18:19:32,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901854778] [2024-11-06 18:19:32,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:19:32,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:19:32,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:19:32,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:19:32,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-06 18:19:32,343 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-06 18:19:32,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:19:32,361 INFO L93 Difference]: Finished difference Result 53 states and 69 transitions. [2024-11-06 18:19:32,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:19:32,364 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 42 [2024-11-06 18:19:32,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:19:32,365 INFO L225 Difference]: With dead ends: 53 [2024-11-06 18:19:32,365 INFO L226 Difference]: Without dead ends: 32 [2024-11-06 18:19:32,365 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-06 18:19:32,366 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:19:32,366 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 54 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 18:19:32,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-06 18:19:32,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-11-06 18:19:32,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 states have internal predecessors, (34), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-06 18:19:32,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2024-11-06 18:19:32,372 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 42 [2024-11-06 18:19:32,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:19:32,373 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2024-11-06 18:19:32,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-06 18:19:32,373 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2024-11-06 18:19:32,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-06 18:19:32,373 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:19:32,374 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:19:32,390 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-06 18:19:32,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:19:32,574 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:19:32,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:19:32,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1042180377, now seen corresponding path program 1 times [2024-11-06 18:19:32,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:19:32,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033675934] [2024-11-06 18:19:32,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:19:32,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:19:32,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:32,627 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-06 18:19:32,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:32,646 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-06 18:19:32,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:32,651 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-06 18:19:32,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:32,655 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-06 18:19:32,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:19:32,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033675934] [2024-11-06 18:19:32,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033675934] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:19:32,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380156137] [2024-11-06 18:19:32,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:19:32,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:19:32,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:19:32,658 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:19:32,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-06 18:19:32,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:32,730 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-06 18:19:32,732 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:19:32,758 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-06 18:19:32,758 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:19:32,802 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-06 18:19:32,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380156137] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:19:32,803 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:19:32,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2024-11-06 18:19:32,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336227802] [2024-11-06 18:19:32,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:19:32,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-06 18:19:32,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:19:32,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-06 18:19:32,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-06 18:19:32,804 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-06 18:19:32,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:19:32,851 INFO L93 Difference]: Finished difference Result 69 states and 92 transitions. [2024-11-06 18:19:32,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-06 18:19:32,851 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 42 [2024-11-06 18:19:32,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:19:32,852 INFO L225 Difference]: With dead ends: 69 [2024-11-06 18:19:32,852 INFO L226 Difference]: Without dead ends: 42 [2024-11-06 18:19:32,853 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-06 18:19:32,853 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 4 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:19:32,854 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 135 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 18:19:32,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-06 18:19:32,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2024-11-06 18:19:32,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 36 states have (on average 1.1944444444444444) internal successors, (43), 36 states have internal predecessors, (43), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-06 18:19:32,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2024-11-06 18:19:32,858 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 42 [2024-11-06 18:19:32,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:19:32,858 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2024-11-06 18:19:32,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-06 18:19:32,859 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2024-11-06 18:19:32,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-06 18:19:32,860 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:19:32,860 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:19:32,875 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-06 18:19:33,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:19:33,061 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:19:33,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:19:33,061 INFO L85 PathProgramCache]: Analyzing trace with hash -604386836, now seen corresponding path program 2 times [2024-11-06 18:19:33,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:19:33,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927984291] [2024-11-06 18:19:33,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:19:33,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:19:33,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:33,101 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-06 18:19:33,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:33,132 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-06 18:19:33,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:33,141 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-06 18:19:33,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:33,150 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-06 18:19:33,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:19:33,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927984291] [2024-11-06 18:19:33,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927984291] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:19:33,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632933075] [2024-11-06 18:19:33,151 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 18:19:33,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:19:33,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:19:33,154 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:19:33,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-06 18:19:33,237 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 18:19:33,237 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:19:33,239 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-06 18:19:33,252 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:19:33,304 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-06 18:19:33,304 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:19:33,389 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-06 18:19:33,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632933075] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:19:33,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:19:33,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2024-11-06 18:19:33,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441005085] [2024-11-06 18:19:33,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:19:33,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-06 18:19:33,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:19:33,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-06 18:19:33,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-06 18:19:33,393 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-06 18:19:33,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:19:33,470 INFO L93 Difference]: Finished difference Result 86 states and 112 transitions. [2024-11-06 18:19:33,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-06 18:19:33,471 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 57 [2024-11-06 18:19:33,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:19:33,472 INFO L225 Difference]: With dead ends: 86 [2024-11-06 18:19:33,474 INFO L226 Difference]: Without dead ends: 56 [2024-11-06 18:19:33,474 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-06 18:19:33,475 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 6 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:19:33,475 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 88 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:19:33,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-06 18:19:33,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 51. [2024-11-06 18:19:33,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 46 states have (on average 1.108695652173913) internal successors, (51), 46 states have internal predecessors, (51), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-06 18:19:33,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2024-11-06 18:19:33,489 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 57 [2024-11-06 18:19:33,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:19:33,489 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2024-11-06 18:19:33,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-06 18:19:33,489 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2024-11-06 18:19:33,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-06 18:19:33,490 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:19:33,491 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 6, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:19:33,510 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-06 18:19:33,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:19:33,692 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:19:33,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:19:33,692 INFO L85 PathProgramCache]: Analyzing trace with hash 948362870, now seen corresponding path program 1 times [2024-11-06 18:19:33,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:19:33,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073511244] [2024-11-06 18:19:33,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:19:33,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:19:33,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:33,809 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-06 18:19:33,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:33,817 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-06 18:19:33,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:33,824 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-06 18:19:33,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:33,833 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2024-11-06 18:19:33,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:19:33,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073511244] [2024-11-06 18:19:33,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073511244] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:19:33,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551437600] [2024-11-06 18:19:33,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:19:33,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:19:33,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:19:33,836 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:19:33,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-06 18:19:33,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:33,950 INFO L255 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-06 18:19:33,956 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:19:34,089 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2024-11-06 18:19:34,090 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:19:34,363 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2024-11-06 18:19:34,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551437600] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:19:34,364 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:19:34,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 13, 13] total 26 [2024-11-06 18:19:34,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590438551] [2024-11-06 18:19:34,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:19:34,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-06 18:19:34,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:19:34,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-06 18:19:34,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=369, Unknown=0, NotChecked=0, Total=650 [2024-11-06 18:19:34,369 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand has 26 states, 26 states have (on average 3.1153846153846154) internal successors, (81), 26 states have internal predecessors, (81), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-06 18:19:34,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:19:34,494 INFO L93 Difference]: Finished difference Result 106 states and 130 transitions. [2024-11-06 18:19:34,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-06 18:19:34,495 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.1153846153846154) internal successors, (81), 26 states have internal predecessors, (81), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 78 [2024-11-06 18:19:34,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:19:34,495 INFO L225 Difference]: With dead ends: 106 [2024-11-06 18:19:34,496 INFO L226 Difference]: Without dead ends: 78 [2024-11-06 18:19:34,496 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=281, Invalid=369, Unknown=0, NotChecked=0, Total=650 [2024-11-06 18:19:34,497 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 3 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:19:34,497 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 162 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:19:34,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-06 18:19:34,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2024-11-06 18:19:34,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 72 states have (on average 1.0694444444444444) internal successors, (77), 72 states have internal predecessors, (77), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-06 18:19:34,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 83 transitions. [2024-11-06 18:19:34,512 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 83 transitions. Word has length 78 [2024-11-06 18:19:34,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:19:34,512 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 83 transitions. [2024-11-06 18:19:34,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.1153846153846154) internal successors, (81), 26 states have internal predecessors, (81), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-06 18:19:34,514 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 83 transitions. [2024-11-06 18:19:34,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-06 18:19:34,516 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:19:34,516 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 9, 9, 6, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:19:34,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-06 18:19:34,720 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,SelfDestructingSolverStorable6 [2024-11-06 18:19:34,721 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:19:34,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:19:34,721 INFO L85 PathProgramCache]: Analyzing trace with hash 869295696, now seen corresponding path program 2 times [2024-11-06 18:19:34,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:19:34,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665615419] [2024-11-06 18:19:34,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:19:34,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:19:34,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:35,503 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-06 18:19:35,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:35,511 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-06 18:19:35,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:35,531 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-11-06 18:19:35,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:35,544 INFO L134 CoverageAnalysis]: Checked inductivity of 638 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2024-11-06 18:19:35,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:19:35,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665615419] [2024-11-06 18:19:35,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665615419] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:19:35,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328388500] [2024-11-06 18:19:35,545 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 18:19:35,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:19:35,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:19:35,551 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:19:35,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-06 18:19:35,682 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 18:19:35,682 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:19:35,689 INFO L255 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-06 18:19:35,692 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:19:35,783 INFO L134 CoverageAnalysis]: Checked inductivity of 638 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2024-11-06 18:19:35,783 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:19:36,467 INFO L134 CoverageAnalysis]: Checked inductivity of 638 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2024-11-06 18:19:36,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328388500] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:19:36,468 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:19:36,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 43 [2024-11-06 18:19:36,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848915797] [2024-11-06 18:19:36,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:19:36,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-06 18:19:36,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:19:36,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-06 18:19:36,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2024-11-06 18:19:36,471 INFO L87 Difference]: Start difference. First operand 77 states and 83 transitions. Second operand has 43 states, 43 states have (on average 2.604651162790698) internal successors, (112), 43 states have internal predecessors, (112), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-06 18:19:36,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:19:36,594 INFO L93 Difference]: Finished difference Result 143 states and 172 transitions. [2024-11-06 18:19:36,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-06 18:19:36,595 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.604651162790698) internal successors, (112), 43 states have internal predecessors, (112), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 104 [2024-11-06 18:19:36,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:19:36,596 INFO L225 Difference]: With dead ends: 143 [2024-11-06 18:19:36,596 INFO L226 Difference]: Without dead ends: 113 [2024-11-06 18:19:36,597 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 190 SyntacticMatches, 6 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2024-11-06 18:19:36,598 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 1 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:19:36,598 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 153 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:19:36,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-06 18:19:36,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2024-11-06 18:19:36,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 108 states have (on average 1.0462962962962963) internal successors, (113), 108 states have internal predecessors, (113), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-06 18:19:36,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 119 transitions. [2024-11-06 18:19:36,606 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 119 transitions. Word has length 104 [2024-11-06 18:19:36,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:19:36,606 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 119 transitions. [2024-11-06 18:19:36,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.604651162790698) internal successors, (112), 43 states have internal predecessors, (112), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-06 18:19:36,607 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 119 transitions. [2024-11-06 18:19:36,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-06 18:19:36,608 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:19:36,608 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 9, 9, 6, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:19:36,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-06 18:19:36,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:19:36,809 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:19:36,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:19:36,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1918044148, now seen corresponding path program 3 times [2024-11-06 18:19:36,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:19:36,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250896223] [2024-11-06 18:19:36,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:19:36,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:19:36,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:36,993 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-06 18:19:36,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:37,025 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-11-06 18:19:37,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:37,033 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-11-06 18:19:37,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:37,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1754 backedges. 5 proven. 81 refuted. 0 times theorem prover too weak. 1668 trivial. 0 not checked. [2024-11-06 18:19:37,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:19:37,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250896223] [2024-11-06 18:19:37,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250896223] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:19:37,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121727684] [2024-11-06 18:19:37,044 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-06 18:19:37,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:19:37,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:19:37,047 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:19:37,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-06 18:19:37,182 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-06 18:19:37,182 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:19:37,184 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-06 18:19:37,189 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:19:37,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1754 backedges. 48 proven. 2 refuted. 0 times theorem prover too weak. 1704 trivial. 0 not checked. [2024-11-06 18:19:37,227 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:19:37,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1754 backedges. 48 proven. 2 refuted. 0 times theorem prover too weak. 1704 trivial. 0 not checked. [2024-11-06 18:19:37,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121727684] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:19:37,281 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:19:37,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-06 18:19:37,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649162746] [2024-11-06 18:19:37,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:19:37,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-06 18:19:37,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:19:37,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-06 18:19:37,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-11-06 18:19:37,286 INFO L87 Difference]: Start difference. First operand 113 states and 119 transitions. Second operand has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-06 18:19:37,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:19:37,328 INFO L93 Difference]: Finished difference Result 159 states and 182 transitions. [2024-11-06 18:19:37,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-06 18:19:37,329 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 140 [2024-11-06 18:19:37,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:19:37,331 INFO L225 Difference]: With dead ends: 159 [2024-11-06 18:19:37,331 INFO L226 Difference]: Without dead ends: 131 [2024-11-06 18:19:37,331 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-11-06 18:19:37,332 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 10 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:19:37,332 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 98 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 18:19:37,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-06 18:19:37,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2024-11-06 18:19:37,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 126 states have (on average 1.0714285714285714) internal successors, (135), 126 states have internal predecessors, (135), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-06 18:19:37,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 141 transitions. [2024-11-06 18:19:37,353 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 141 transitions. Word has length 140 [2024-11-06 18:19:37,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:19:37,354 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 141 transitions. [2024-11-06 18:19:37,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-06 18:19:37,354 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 141 transitions. [2024-11-06 18:19:37,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2024-11-06 18:19:37,359 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:19:37,360 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 27, 27, 15, 12, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:19:37,380 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-06 18:19:37,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:19:37,561 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:19:37,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:19:37,561 INFO L85 PathProgramCache]: Analyzing trace with hash 2009222484, now seen corresponding path program 4 times [2024-11-06 18:19:37,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:19:37,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347657595] [2024-11-06 18:19:37,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:19:37,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:19:37,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:37,835 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-06 18:19:37,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:37,895 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-11-06 18:19:37,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:37,918 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-11-06 18:19:37,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:37,930 INFO L134 CoverageAnalysis]: Checked inductivity of 2753 backedges. 65 proven. 556 refuted. 0 times theorem prover too weak. 2132 trivial. 0 not checked. [2024-11-06 18:19:37,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:19:37,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347657595] [2024-11-06 18:19:37,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347657595] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:19:37,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588596420] [2024-11-06 18:19:37,931 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-06 18:19:37,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:19:37,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:19:37,936 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:19:37,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-06 18:19:38,128 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-06 18:19:38,129 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:19:38,133 INFO L255 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-06 18:19:38,136 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:19:38,161 INFO L134 CoverageAnalysis]: Checked inductivity of 2753 backedges. 728 proven. 26 refuted. 0 times theorem prover too weak. 1999 trivial. 0 not checked. [2024-11-06 18:19:38,162 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:19:38,238 INFO L134 CoverageAnalysis]: Checked inductivity of 2753 backedges. 330 proven. 291 refuted. 0 times theorem prover too weak. 2132 trivial. 0 not checked. [2024-11-06 18:19:38,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588596420] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:19:38,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:19:38,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-06 18:19:38,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756790078] [2024-11-06 18:19:38,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:19:38,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-06 18:19:38,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:19:38,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-06 18:19:38,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2024-11-06 18:19:38,241 INFO L87 Difference]: Start difference. First operand 131 states and 141 transitions. Second operand has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 states have internal predecessors, (62), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-06 18:19:38,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:19:38,287 INFO L93 Difference]: Finished difference Result 195 states and 222 transitions. [2024-11-06 18:19:38,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-06 18:19:38,288 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 states have internal predecessors, (62), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 194 [2024-11-06 18:19:38,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:19:38,289 INFO L225 Difference]: With dead ends: 195 [2024-11-06 18:19:38,289 INFO L226 Difference]: Without dead ends: 149 [2024-11-06 18:19:38,290 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 389 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2024-11-06 18:19:38,291 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 2 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:19:38,291 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 75 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 18:19:38,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-11-06 18:19:38,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2024-11-06 18:19:38,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 144 states have (on average 1.0625) internal successors, (153), 144 states have internal predecessors, (153), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-06 18:19:38,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 159 transitions. [2024-11-06 18:19:38,300 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 159 transitions. Word has length 194 [2024-11-06 18:19:38,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:19:38,300 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 159 transitions. [2024-11-06 18:19:38,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 states have internal predecessors, (62), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-06 18:19:38,300 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 159 transitions. [2024-11-06 18:19:38,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2024-11-06 18:19:38,303 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:19:38,303 INFO L215 NwaCegarLoop]: trace histogram [45, 45, 40, 40, 30, 15, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:19:38,323 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 18:19:38,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:19:38,504 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:19:38,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:19:38,504 INFO L85 PathProgramCache]: Analyzing trace with hash 204674612, now seen corresponding path program 5 times [2024-11-06 18:19:38,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:19:38,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909489448] [2024-11-06 18:19:38,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:19:38,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:19:38,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:38,924 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-06 18:19:38,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:39,077 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-11-06 18:19:39,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:39,092 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-11-06 18:19:39,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:39,110 INFO L134 CoverageAnalysis]: Checked inductivity of 4724 backedges. 149 proven. 1573 refuted. 0 times theorem prover too weak. 3002 trivial. 0 not checked. [2024-11-06 18:19:39,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:19:39,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909489448] [2024-11-06 18:19:39,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909489448] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:19:39,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046899201] [2024-11-06 18:19:39,111 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-06 18:19:39,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:19:39,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:19:39,113 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:19:39,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-06 18:19:39,392 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2024-11-06 18:19:39,392 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:19:39,396 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-06 18:19:39,399 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:19:39,528 INFO L134 CoverageAnalysis]: Checked inductivity of 4724 backedges. 1578 proven. 40 refuted. 0 times theorem prover too weak. 3106 trivial. 0 not checked. [2024-11-06 18:19:39,529 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:19:39,689 INFO L134 CoverageAnalysis]: Checked inductivity of 4724 backedges. 164 proven. 568 refuted. 0 times theorem prover too weak. 3992 trivial. 0 not checked. [2024-11-06 18:19:39,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046899201] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:19:39,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:19:39,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 27 [2024-11-06 18:19:39,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097528276] [2024-11-06 18:19:39,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:19:39,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-06 18:19:39,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:19:39,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-06 18:19:39,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2024-11-06 18:19:39,692 INFO L87 Difference]: Start difference. First operand 149 states and 159 transitions. Second operand has 27 states, 27 states have (on average 3.7037037037037037) internal successors, (100), 27 states have internal predecessors, (100), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-06 18:19:39,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:19:39,787 INFO L93 Difference]: Finished difference Result 243 states and 282 transitions. [2024-11-06 18:19:39,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-06 18:19:39,787 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.7037037037037037) internal successors, (100), 27 states have internal predecessors, (100), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 248 [2024-11-06 18:19:39,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:19:39,789 INFO L225 Difference]: With dead ends: 243 [2024-11-06 18:19:39,789 INFO L226 Difference]: Without dead ends: 179 [2024-11-06 18:19:39,790 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 488 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2024-11-06 18:19:39,790 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 10 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:19:39,790 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 122 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:19:39,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-11-06 18:19:39,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2024-11-06 18:19:39,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 174 states have (on average 1.0977011494252873) internal successors, (191), 174 states have internal predecessors, (191), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-06 18:19:39,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 197 transitions. [2024-11-06 18:19:39,799 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 197 transitions. Word has length 248 [2024-11-06 18:19:39,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:19:39,799 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 197 transitions. [2024-11-06 18:19:39,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.7037037037037037) internal successors, (100), 27 states have internal predecessors, (100), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-06 18:19:39,799 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 197 transitions. [2024-11-06 18:19:39,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2024-11-06 18:19:39,803 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:19:39,803 INFO L215 NwaCegarLoop]: trace histogram [75, 75, 40, 40, 39, 36, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:19:39,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-06 18:19:40,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:19:40,004 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:19:40,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:19:40,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1512062124, now seen corresponding path program 6 times [2024-11-06 18:19:40,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:19:40,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493892928] [2024-11-06 18:19:40,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:19:40,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:19:40,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:40,451 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-06 18:19:40,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:40,648 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-11-06 18:19:40,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:40,668 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2024-11-06 18:19:40,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:40,714 INFO L134 CoverageAnalysis]: Checked inductivity of 10169 backedges. 481 proven. 4080 refuted. 0 times theorem prover too weak. 5608 trivial. 0 not checked. [2024-11-06 18:19:40,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:19:40,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493892928] [2024-11-06 18:19:40,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493892928] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:19:40,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156531777] [2024-11-06 18:19:40,715 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-06 18:19:40,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:19:40,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:19:40,721 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:19:40,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-06 18:19:40,918 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-06 18:19:40,918 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:19:40,920 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-06 18:19:40,926 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:19:40,982 INFO L134 CoverageAnalysis]: Checked inductivity of 10169 backedges. 3860 proven. 4 refuted. 0 times theorem prover too weak. 6305 trivial. 0 not checked. [2024-11-06 18:19:40,983 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:19:41,056 INFO L134 CoverageAnalysis]: Checked inductivity of 10169 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10165 trivial. 0 not checked. [2024-11-06 18:19:41,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156531777] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:19:41,057 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:19:41,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 21 [2024-11-06 18:19:41,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563508751] [2024-11-06 18:19:41,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:19:41,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-06 18:19:41,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:19:41,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-06 18:19:41,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=288, Unknown=0, NotChecked=0, Total=420 [2024-11-06 18:19:41,059 INFO L87 Difference]: Start difference. First operand 179 states and 197 transitions. Second operand has 21 states, 21 states have (on average 3.9523809523809526) internal successors, (83), 21 states have internal predecessors, (83), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-06 18:19:41,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:19:41,149 INFO L93 Difference]: Finished difference Result 285 states and 327 transitions. [2024-11-06 18:19:41,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-06 18:19:41,150 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.9523809523809526) internal successors, (83), 21 states have internal predecessors, (83), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 338 [2024-11-06 18:19:41,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:19:41,151 INFO L225 Difference]: With dead ends: 285 [2024-11-06 18:19:41,151 INFO L226 Difference]: Without dead ends: 191 [2024-11-06 18:19:41,152 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 695 GetRequests, 676 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=132, Invalid=288, Unknown=0, NotChecked=0, Total=420 [2024-11-06 18:19:41,153 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 3 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:19:41,153 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 197 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:19:41,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-11-06 18:19:41,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 190. [2024-11-06 18:19:41,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 185 states have (on average 1.0918918918918918) internal successors, (202), 185 states have internal predecessors, (202), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-06 18:19:41,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 208 transitions. [2024-11-06 18:19:41,165 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 208 transitions. Word has length 338 [2024-11-06 18:19:41,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:19:41,167 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 208 transitions. [2024-11-06 18:19:41,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.9523809523809526) internal successors, (83), 21 states have internal predecessors, (83), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-06 18:19:41,167 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 208 transitions. [2024-11-06 18:19:41,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2024-11-06 18:19:41,171 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:19:41,171 INFO L215 NwaCegarLoop]: trace histogram [78, 78, 40, 40, 39, 39, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:19:41,190 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-06 18:19:41,373 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,SelfDestructingSolverStorable11 [2024-11-06 18:19:41,377 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:19:41,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:19:41,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1305102617, now seen corresponding path program 7 times [2024-11-06 18:19:41,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:19:41,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62862444] [2024-11-06 18:19:41,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:19:41,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:19:41,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:41,856 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-06 18:19:41,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:42,046 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-11-06 18:19:42,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:42,071 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2024-11-06 18:19:42,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:42,097 INFO L134 CoverageAnalysis]: Checked inductivity of 10894 backedges. 519 proven. 4428 refuted. 0 times theorem prover too weak. 5947 trivial. 0 not checked. [2024-11-06 18:19:42,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:19:42,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62862444] [2024-11-06 18:19:42,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62862444] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:19:42,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464447244] [2024-11-06 18:19:42,097 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-06 18:19:42,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:19:42,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:19:42,101 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:19:42,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-06 18:19:42,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:42,388 INFO L255 TraceCheckSpWp]: Trace formula consists of 1011 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-06 18:19:42,411 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:19:42,482 INFO L134 CoverageAnalysis]: Checked inductivity of 10894 backedges. 2681 proven. 260 refuted. 0 times theorem prover too weak. 7953 trivial. 0 not checked. [2024-11-06 18:19:42,483 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:19:42,740 INFO L134 CoverageAnalysis]: Checked inductivity of 10894 backedges. 519 proven. 4428 refuted. 0 times theorem prover too weak. 5947 trivial. 0 not checked. [2024-11-06 18:19:42,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464447244] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:19:42,740 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:19:42,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 23 [2024-11-06 18:19:42,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27603960] [2024-11-06 18:19:42,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:19:42,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-06 18:19:42,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:19:42,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-06 18:19:42,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2024-11-06 18:19:42,742 INFO L87 Difference]: Start difference. First operand 190 states and 208 transitions. Second operand has 23 states, 23 states have (on average 4.173913043478261) internal successors, (96), 23 states have internal predecessors, (96), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-06 18:19:42,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:19:42,831 INFO L93 Difference]: Finished difference Result 319 states and 364 transitions. [2024-11-06 18:19:42,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-06 18:19:42,832 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.173913043478261) internal successors, (96), 23 states have internal predecessors, (96), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 355 [2024-11-06 18:19:42,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:19:42,833 INFO L225 Difference]: With dead ends: 319 [2024-11-06 18:19:42,833 INFO L226 Difference]: Without dead ends: 214 [2024-11-06 18:19:42,834 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 730 GetRequests, 702 SyntacticMatches, 7 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2024-11-06 18:19:42,834 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 1 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:19:42,834 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 123 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:19:42,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2024-11-06 18:19:42,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2024-11-06 18:19:42,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 209 states have (on average 1.0813397129186604) internal successors, (226), 209 states have internal predecessors, (226), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-06 18:19:42,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 232 transitions. [2024-11-06 18:19:42,847 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 232 transitions. Word has length 355 [2024-11-06 18:19:42,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:19:42,848 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 232 transitions. [2024-11-06 18:19:42,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.173913043478261) internal successors, (96), 23 states have internal predecessors, (96), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-06 18:19:42,849 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 232 transitions. [2024-11-06 18:19:42,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2024-11-06 18:19:42,857 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:19:42,857 INFO L215 NwaCegarLoop]: trace histogram [102, 102, 63, 40, 40, 39, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:19:42,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-06 18:19:43,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:19:43,062 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:19:43,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:19:43,063 INFO L85 PathProgramCache]: Analyzing trace with hash 2038223513, now seen corresponding path program 8 times [2024-11-06 18:19:43,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:19:43,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846914479] [2024-11-06 18:19:43,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:19:43,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:19:43,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:43,422 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-06 18:19:43,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:43,437 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-11-06 18:19:43,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:43,453 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2024-11-06 18:19:43,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:43,474 INFO L134 CoverageAnalysis]: Checked inductivity of 17410 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 17374 trivial. 0 not checked. [2024-11-06 18:19:43,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:19:43,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846914479] [2024-11-06 18:19:43,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846914479] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:19:43,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910209482] [2024-11-06 18:19:43,475 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 18:19:43,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:19:43,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:19:43,477 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:19:43,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-06 18:19:43,781 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 18:19:43,781 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:19:43,789 INFO L255 TraceCheckSpWp]: Trace formula consists of 1107 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-06 18:19:43,796 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:19:44,599 INFO L134 CoverageAnalysis]: Checked inductivity of 17410 backedges. 7076 proven. 1717 refuted. 0 times theorem prover too weak. 8617 trivial. 0 not checked. [2024-11-06 18:19:44,599 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:19:45,512 INFO L134 CoverageAnalysis]: Checked inductivity of 17410 backedges. 0 proven. 8797 refuted. 0 times theorem prover too weak. 8613 trivial. 0 not checked. [2024-11-06 18:19:45,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910209482] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:19:45,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:19:45,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 37, 37] total 49 [2024-11-06 18:19:45,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5372294] [2024-11-06 18:19:45,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:19:45,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-06 18:19:45,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:19:45,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-06 18:19:45,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=896, Invalid=1456, Unknown=0, NotChecked=0, Total=2352 [2024-11-06 18:19:45,518 INFO L87 Difference]: Start difference. First operand 214 states and 232 transitions. Second operand has 49 states, 49 states have (on average 3.510204081632653) internal successors, (172), 49 states have internal predecessors, (172), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-06 18:19:45,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:19:45,776 INFO L93 Difference]: Finished difference Result 364 states and 414 transitions. [2024-11-06 18:19:45,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-06 18:19:45,777 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.510204081632653) internal successors, (172), 49 states have internal predecessors, (172), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 427 [2024-11-06 18:19:45,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:19:45,779 INFO L225 Difference]: With dead ends: 364 [2024-11-06 18:19:45,779 INFO L226 Difference]: Without dead ends: 235 [2024-11-06 18:19:45,780 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 867 GetRequests, 790 SyntacticMatches, 30 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1005 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=896, Invalid=1456, Unknown=0, NotChecked=0, Total=2352 [2024-11-06 18:19:45,781 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 23 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 18:19:45,781 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 130 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 18:19:45,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2024-11-06 18:19:45,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 234. [2024-11-06 18:19:45,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 229 states have (on average 1.1004366812227073) internal successors, (252), 229 states have internal predecessors, (252), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-06 18:19:45,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 258 transitions. [2024-11-06 18:19:45,793 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 258 transitions. Word has length 427 [2024-11-06 18:19:45,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:19:45,794 INFO L471 AbstractCegarLoop]: Abstraction has 234 states and 258 transitions. [2024-11-06 18:19:45,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.510204081632653) internal successors, (172), 49 states have internal predecessors, (172), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-06 18:19:45,794 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 258 transitions. [2024-11-06 18:19:45,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2024-11-06 18:19:45,802 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:19:45,802 INFO L215 NwaCegarLoop]: trace histogram [120, 120, 63, 57, 40, 40, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:19:45,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-06 18:19:46,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:19:46,007 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:19:46,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:19:46,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1066486921, now seen corresponding path program 9 times [2024-11-06 18:19:46,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:19:46,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491068957] [2024-11-06 18:19:46,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:19:46,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:19:46,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:46,418 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-06 18:19:46,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:46,436 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-11-06 18:19:46,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:46,455 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2024-11-06 18:19:46,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:46,477 INFO L134 CoverageAnalysis]: Checked inductivity of 23444 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 23395 trivial. 0 not checked. [2024-11-06 18:19:46,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:19:46,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491068957] [2024-11-06 18:19:46,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491068957] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:19:46,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754743404] [2024-11-06 18:19:46,478 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-06 18:19:46,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:19:46,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:19:46,483 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:19:46,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-06 18:19:46,901 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-06 18:19:46,901 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:19:46,905 INFO L255 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-06 18:19:46,914 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:19:46,947 INFO L134 CoverageAnalysis]: Checked inductivity of 23444 backedges. 9770 proven. 49 refuted. 0 times theorem prover too weak. 13625 trivial. 0 not checked. [2024-11-06 18:19:46,947 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:19:47,094 INFO L134 CoverageAnalysis]: Checked inductivity of 23444 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 23395 trivial. 0 not checked. [2024-11-06 18:19:47,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754743404] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:19:47,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:19:47,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2024-11-06 18:19:47,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416513126] [2024-11-06 18:19:47,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:19:47,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-06 18:19:47,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:19:47,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-06 18:19:47,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2024-11-06 18:19:47,100 INFO L87 Difference]: Start difference. First operand 234 states and 258 transitions. Second operand has 19 states, 19 states have (on average 3.263157894736842) internal successors, (62), 19 states have internal predecessors, (62), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:19:47,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:19:47,161 INFO L93 Difference]: Finished difference Result 383 states and 436 transitions. [2024-11-06 18:19:47,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-06 18:19:47,162 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.263157894736842) internal successors, (62), 19 states have internal predecessors, (62), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 483 [2024-11-06 18:19:47,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:19:47,164 INFO L225 Difference]: With dead ends: 383 [2024-11-06 18:19:47,164 INFO L226 Difference]: Without dead ends: 252 [2024-11-06 18:19:47,165 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 980 GetRequests, 963 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2024-11-06 18:19:47,166 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 2 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:19:47,166 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 172 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 18:19:47,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2024-11-06 18:19:47,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2024-11-06 18:19:47,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 247 states have (on average 1.0931174089068827) internal successors, (270), 247 states have internal predecessors, (270), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-06 18:19:47,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 276 transitions. [2024-11-06 18:19:47,179 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 276 transitions. Word has length 483 [2024-11-06 18:19:47,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:19:47,181 INFO L471 AbstractCegarLoop]: Abstraction has 252 states and 276 transitions. [2024-11-06 18:19:47,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.263157894736842) internal successors, (62), 19 states have internal predecessors, (62), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:19:47,181 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 276 transitions. [2024-11-06 18:19:47,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2024-11-06 18:19:47,184 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:19:47,184 INFO L215 NwaCegarLoop]: trace histogram [120, 120, 63, 57, 40, 40, 16, 16, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:19:47,208 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-06 18:19:47,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-06 18:19:47,389 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:19:47,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:19:47,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1157301915, now seen corresponding path program 10 times [2024-11-06 18:19:47,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:19:47,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50275742] [2024-11-06 18:19:47,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:19:47,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:19:47,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:48,121 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-06 18:19:48,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:48,154 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-11-06 18:19:48,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:48,169 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2024-11-06 18:19:48,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:48,189 INFO L134 CoverageAnalysis]: Checked inductivity of 23651 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 23395 trivial. 0 not checked. [2024-11-06 18:19:48,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:19:48,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50275742] [2024-11-06 18:19:48,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50275742] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:19:48,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848116674] [2024-11-06 18:19:48,190 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-06 18:19:48,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:19:48,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:19:48,194 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:19:48,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-06 18:19:48,570 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-06 18:19:48,571 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:19:48,579 INFO L255 TraceCheckSpWp]: Trace formula consists of 1321 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-06 18:19:48,585 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:19:48,645 INFO L134 CoverageAnalysis]: Checked inductivity of 23651 backedges. 9770 proven. 256 refuted. 0 times theorem prover too weak. 13625 trivial. 0 not checked. [2024-11-06 18:19:48,645 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:19:49,050 INFO L134 CoverageAnalysis]: Checked inductivity of 23651 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 23395 trivial. 0 not checked. [2024-11-06 18:19:49,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848116674] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:19:49,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:19:49,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 37 [2024-11-06 18:19:49,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257554842] [2024-11-06 18:19:49,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:19:49,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-06 18:19:49,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:19:49,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-06 18:19:49,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2024-11-06 18:19:49,055 INFO L87 Difference]: Start difference. First operand 252 states and 276 transitions. Second operand has 37 states, 37 states have (on average 2.6486486486486487) internal successors, (98), 37 states have internal predecessors, (98), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:19:49,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:19:49,157 INFO L93 Difference]: Finished difference Result 419 states and 481 transitions. [2024-11-06 18:19:49,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-06 18:19:49,158 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.6486486486486487) internal successors, (98), 37 states have internal predecessors, (98), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 501 [2024-11-06 18:19:49,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:19:49,160 INFO L225 Difference]: With dead ends: 419 [2024-11-06 18:19:49,160 INFO L226 Difference]: Without dead ends: 288 [2024-11-06 18:19:49,164 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1025 GetRequests, 990 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2024-11-06 18:19:49,165 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 2 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:19:49,166 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 76 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:19:49,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2024-11-06 18:19:49,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2024-11-06 18:19:49,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 283 states have (on average 1.0812720848056536) internal successors, (306), 283 states have internal predecessors, (306), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-06 18:19:49,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 312 transitions. [2024-11-06 18:19:49,178 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 312 transitions. Word has length 501 [2024-11-06 18:19:49,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:19:49,181 INFO L471 AbstractCegarLoop]: Abstraction has 288 states and 312 transitions. [2024-11-06 18:19:49,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.6486486486486487) internal successors, (98), 37 states have internal predecessors, (98), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:19:49,181 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 312 transitions. [2024-11-06 18:19:49,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2024-11-06 18:19:49,184 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:19:49,184 INFO L215 NwaCegarLoop]: trace histogram [120, 120, 63, 57, 40, 40, 34, 34, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:19:49,210 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 18:19:49,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-06 18:19:49,389 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:19:49,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:19:49,389 INFO L85 PathProgramCache]: Analyzing trace with hash 108611265, now seen corresponding path program 11 times [2024-11-06 18:19:49,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:19:49,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112984359] [2024-11-06 18:19:49,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:19:49,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:19:49,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:51,021 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-06 18:19:51,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:51,039 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-11-06 18:19:51,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:51,055 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2024-11-06 18:19:51,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:51,073 INFO L134 CoverageAnalysis]: Checked inductivity of 24551 backedges. 0 proven. 1156 refuted. 0 times theorem prover too weak. 23395 trivial. 0 not checked. [2024-11-06 18:19:51,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:19:51,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112984359] [2024-11-06 18:19:51,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112984359] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:19:51,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209175870] [2024-11-06 18:19:51,074 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-06 18:19:51,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:19:51,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:19:51,077 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:19:51,078 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