./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/reducercommutativity/rangesum60.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/rangesum60.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', '6531e15623308e4078ac0600b5852029139b0fe65df20988c6e3b5d5367f33f6'] 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/rangesum60.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 6531e15623308e4078ac0600b5852029139b0fe65df20988c6e3b5d5367f33f6 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-06 18:19:28,148 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 18:19:28,247 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-06 18:19:28,254 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 18:19:28,255 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 18:19:28,279 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 18:19:28,282 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 18:19:28,283 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 18:19:28,283 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 18:19:28,284 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 18:19:28,284 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 18:19:28,285 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 18:19:28,285 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 18:19:28,285 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 18:19:28,285 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 18:19:28,285 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 18:19:28,285 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 18:19:28,286 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-06 18:19:28,286 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-06 18:19:28,286 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-06 18:19:28,286 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 18:19:28,287 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 18:19:28,287 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 18:19:28,287 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 18:19:28,287 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 18:19:28,287 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-06 18:19:28,287 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 18:19:28,287 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 18:19:28,287 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 18:19:28,287 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 18:19:28,287 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 18:19:28,287 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 18:19:28,287 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 18:19:28,288 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 18:19:28,288 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 18:19:28,288 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 18:19:28,288 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-06 18:19:28,288 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-06 18:19:28,288 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 18:19:28,288 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 18:19:28,288 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 18:19:28,288 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 18:19:28,289 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 -> 6531e15623308e4078ac0600b5852029139b0fe65df20988c6e3b5d5367f33f6 [2024-11-06 18:19:28,591 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 18:19:28,601 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 18:19:28,603 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 18:19:28,604 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 18:19:28,604 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 18:19:28,605 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/reducercommutativity/rangesum60.i [2024-11-06 18:19:29,902 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 18:19:30,155 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 18:19:30,156 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/reducercommutativity/rangesum60.i [2024-11-06 18:19:30,162 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/1c4bb3fe8/4adad1162bdb42dbb14b01ef9b907bd3/FLAGf4b12ec93 [2024-11-06 18:19:30,181 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/1c4bb3fe8/4adad1162bdb42dbb14b01ef9b907bd3 [2024-11-06 18:19:30,184 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 18:19:30,185 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-06 18:19:30,187 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 18:19:30,188 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 18:19:30,192 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 18:19:30,193 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:19:30" (1/1) ... [2024-11-06 18:19:30,194 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cba403f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:19:30, skipping insertion in model container [2024-11-06 18:19:30,194 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:19:30" (1/1) ... [2024-11-06 18:19:30,209 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 18:19:30,336 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/rangesum60.i[1465,1478] [2024-11-06 18:19:30,344 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 18:19:30,353 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 18:19:30,376 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/rangesum60.i[1465,1478] [2024-11-06 18:19:30,378 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 18:19:30,390 INFO L204 MainTranslator]: Completed translation [2024-11-06 18:19:30,391 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:19:30 WrapperNode [2024-11-06 18:19:30,391 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 18:19:30,392 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 18:19:30,392 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 18:19:30,392 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 18:19:30,396 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:19:30" (1/1) ... [2024-11-06 18:19:30,402 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:19:30" (1/1) ... [2024-11-06 18:19:30,418 INFO L138 Inliner]: procedures = 17, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2024-11-06 18:19:30,419 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 18:19:30,421 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 18:19:30,421 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 18:19:30,421 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 18:19:30,429 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:19:30" (1/1) ... [2024-11-06 18:19:30,430 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:19:30" (1/1) ... [2024-11-06 18:19:30,434 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:19:30" (1/1) ... [2024-11-06 18:19:30,445 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 18:19:30,446 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:19:30" (1/1) ... [2024-11-06 18:19:30,446 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:19:30" (1/1) ... [2024-11-06 18:19:30,452 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:19:30" (1/1) ... [2024-11-06 18:19:30,455 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:19:30" (1/1) ... [2024-11-06 18:19:30,456 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:19:30" (1/1) ... [2024-11-06 18:19:30,457 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:19:30" (1/1) ... [2024-11-06 18:19:30,459 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 18:19:30,460 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 18:19:30,460 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 18:19:30,460 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 18:19:30,463 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:19:30" (1/1) ... [2024-11-06 18:19:30,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 18:19:30,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:19:30,497 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 18:19:30,501 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 18:19:30,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 18:19:30,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-06 18:19:30,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-06 18:19:30,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-06 18:19:30,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-06 18:19:30,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-06 18:19:30,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 18:19:30,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 18:19:30,530 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-06 18:19:30,530 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-06 18:19:30,531 INFO L130 BoogieDeclarations]: Found specification of procedure rangesum [2024-11-06 18:19:30,531 INFO L138 BoogieDeclarations]: Found implementation of procedure rangesum [2024-11-06 18:19:30,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-06 18:19:30,611 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 18:19:30,614 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 18:19:30,768 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2024-11-06 18:19:30,769 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 18:19:30,782 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 18:19:30,782 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-06 18:19:30,782 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:19:30 BoogieIcfgContainer [2024-11-06 18:19:30,782 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 18:19:30,786 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 18:19:30,786 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 18:19:30,790 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 18:19:30,791 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 06:19:30" (1/3) ... [2024-11-06 18:19:30,792 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d3c7613 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 18:19:30,792 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:19:30" (2/3) ... [2024-11-06 18:19:30,792 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d3c7613 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 18:19:30,793 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 18:19:30,794 INFO L112 eAbstractionObserver]: Analyzing ICFG rangesum60.i [2024-11-06 18:19:30,808 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 18:19:30,808 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-06 18:19:30,861 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 18:19:30,873 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;@76c5e93f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 18:19:30,873 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-06 18:19:30,879 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 18:19:30,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-06 18:19:30,886 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:19:30,886 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 18:19:30,887 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:19:30,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:19:30,892 INFO L85 PathProgramCache]: Analyzing trace with hash -275565944, now seen corresponding path program 1 times [2024-11-06 18:19:30,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:19:30,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401121189] [2024-11-06 18:19:30,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:19:30,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:19:30,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:31,116 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-06 18:19:31,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:31,136 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-06 18:19:31,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:31,155 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-06 18:19:31,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:31,200 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 18:19:31,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:19:31,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401121189] [2024-11-06 18:19:31,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401121189] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:19:31,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:19:31,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 18:19:31,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417443940] [2024-11-06 18:19:31,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:19:31,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:19:31,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:19:31,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:19:31,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 18:19:31,233 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 18:19:31,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:19:31,265 INFO L93 Difference]: Finished difference Result 54 states and 77 transitions. [2024-11-06 18:19:31,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:19:31,268 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 18:19:31,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:19:31,273 INFO L225 Difference]: With dead ends: 54 [2024-11-06 18:19:31,273 INFO L226 Difference]: Without dead ends: 26 [2024-11-06 18:19:31,276 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 18:19:31,278 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 18:19:31,279 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 18:19:31,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-06 18:19:31,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2024-11-06 18:19:31,306 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 18:19:31,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2024-11-06 18:19:31,310 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 29 [2024-11-06 18:19:31,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:19:31,310 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2024-11-06 18:19:31,310 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 18:19:31,310 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2024-11-06 18:19:31,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-06 18:19:31,312 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:19:31,312 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 18:19:31,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-06 18:19:31,312 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:19:31,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:19:31,313 INFO L85 PathProgramCache]: Analyzing trace with hash -653100523, now seen corresponding path program 1 times [2024-11-06 18:19:31,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:19:31,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797089646] [2024-11-06 18:19:31,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:19:31,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:19:31,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:31,448 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-06 18:19:31,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:31,471 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-06 18:19:31,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:31,489 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-06 18:19:31,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:31,507 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 18:19:31,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:19:31,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797089646] [2024-11-06 18:19:31,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797089646] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:19:31,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269493400] [2024-11-06 18:19:31,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:19:31,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:19:31,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:19:31,511 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 18:19:31,512 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 18:19:31,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:31,627 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-06 18:19:31,632 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:19:31,663 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 18:19:31,663 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 18:19:31,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269493400] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:19:31,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 18:19:31,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-06 18:19:31,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287588424] [2024-11-06 18:19:31,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:19:31,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:19:31,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:19:31,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:19:31,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-06 18:19:31,666 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 18:19:31,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:19:31,689 INFO L93 Difference]: Finished difference Result 46 states and 61 transitions. [2024-11-06 18:19:31,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:19:31,689 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 18:19:31,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:19:31,690 INFO L225 Difference]: With dead ends: 46 [2024-11-06 18:19:31,690 INFO L226 Difference]: Without dead ends: 28 [2024-11-06 18:19:31,691 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 18:19:31,692 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 18:19:31,693 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 18:19:31,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-06 18:19:31,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2024-11-06 18:19:31,697 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 18:19:31,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2024-11-06 18:19:31,698 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 31 [2024-11-06 18:19:31,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:19:31,698 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2024-11-06 18:19:31,698 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 18:19:31,698 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2024-11-06 18:19:31,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-06 18:19:31,699 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:19:31,699 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 18:19:31,716 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 18:19:31,903 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 18:19:31,904 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:19:31,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:19:31,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1081404920, now seen corresponding path program 1 times [2024-11-06 18:19:31,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:19:31,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638788790] [2024-11-06 18:19:31,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:19:31,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:19:31,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:32,012 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-06 18:19:32,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:32,057 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-06 18:19:32,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:32,071 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-06 18:19:32,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:32,085 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 18:19:32,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:19:32,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638788790] [2024-11-06 18:19:32,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638788790] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:19:32,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160546649] [2024-11-06 18:19:32,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:19:32,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:19:32,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:19:32,090 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 18:19:32,092 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 18:19:32,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:32,230 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-06 18:19:32,232 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:19:32,254 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 18:19:32,254 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 18:19:32,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160546649] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:19:32,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 18:19:32,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-06 18:19:32,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246126622] [2024-11-06 18:19:32,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:19:32,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:19:32,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:19:32,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:19:32,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-06 18:19:32,258 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 18:19:32,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:19:32,278 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2024-11-06 18:19:32,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:19:32,279 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 18:19:32,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:19:32,280 INFO L225 Difference]: With dead ends: 44 [2024-11-06 18:19:32,280 INFO L226 Difference]: Without dead ends: 29 [2024-11-06 18:19:32,281 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 18:19:32,281 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 18:19:32,283 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 18:19:32,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-06 18:19:32,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2024-11-06 18:19:32,289 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 18:19:32,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2024-11-06 18:19:32,290 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 40 [2024-11-06 18:19:32,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:19:32,291 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2024-11-06 18:19:32,292 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 18:19:32,293 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2024-11-06 18:19:32,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-06 18:19:32,294 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:19:32,295 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 18:19:32,313 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-06 18:19:32,495 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 18:19:32,496 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:19:32,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:19:32,496 INFO L85 PathProgramCache]: Analyzing trace with hash -673301430, now seen corresponding path program 1 times [2024-11-06 18:19:32,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:19:32,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197431994] [2024-11-06 18:19:32,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:19:32,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:19:32,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:32,580 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-06 18:19:32,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:32,619 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-06 18:19:32,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:32,632 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-06 18:19:32,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:32,645 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 18:19:32,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:19:32,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197431994] [2024-11-06 18:19:32,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197431994] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:19:32,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174154174] [2024-11-06 18:19:32,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:19:32,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:19:32,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:19:32,650 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 18:19:32,652 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 18:19:32,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:32,733 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-06 18:19:32,735 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:19:32,751 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 18:19:32,751 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 18:19:32,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174154174] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:19:32,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 18:19:32,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-06 18:19:32,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982073662] [2024-11-06 18:19:32,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:19:32,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:19:32,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:19:32,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:19:32,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-06 18:19:32,755 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 18:19:32,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:19:32,770 INFO L93 Difference]: Finished difference Result 53 states and 69 transitions. [2024-11-06 18:19:32,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:19:32,771 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 18:19:32,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:19:32,771 INFO L225 Difference]: With dead ends: 53 [2024-11-06 18:19:32,771 INFO L226 Difference]: Without dead ends: 32 [2024-11-06 18:19:32,772 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 18:19:32,773 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 18:19:32,774 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 18:19:32,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-06 18:19:32,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-11-06 18:19:32,780 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 18:19:32,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2024-11-06 18:19:32,781 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 42 [2024-11-06 18:19:32,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:19:32,781 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2024-11-06 18:19:32,781 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 18:19:32,781 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2024-11-06 18:19:32,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-06 18:19:32,783 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:19:32,783 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 18:19:32,803 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 18:19:32,985 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 18:19:32,985 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:19:32,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:19:32,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1042180377, now seen corresponding path program 1 times [2024-11-06 18:19:32,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:19:32,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411048968] [2024-11-06 18:19:32,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:19:32,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:19:33,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:33,051 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-06 18:19:33,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:33,076 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-06 18:19:33,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:33,085 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-06 18:19:33,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:33,090 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 18:19:33,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:19:33,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411048968] [2024-11-06 18:19:33,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411048968] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:19:33,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961003089] [2024-11-06 18:19:33,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:19:33,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:19:33,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:19:33,094 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 18:19:33,096 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 18:19:33,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:33,174 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-06 18:19:33,176 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:19:33,205 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 18:19:33,208 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:19:33,258 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 18:19:33,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961003089] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:19:33,259 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:19:33,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2024-11-06 18:19:33,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102693222] [2024-11-06 18:19:33,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:19:33,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-06 18:19:33,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:19:33,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-06 18:19:33,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-06 18:19:33,262 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 18:19:33,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:19:33,327 INFO L93 Difference]: Finished difference Result 69 states and 92 transitions. [2024-11-06 18:19:33,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-06 18:19:33,330 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 18:19:33,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:19:33,331 INFO L225 Difference]: With dead ends: 69 [2024-11-06 18:19:33,331 INFO L226 Difference]: Without dead ends: 42 [2024-11-06 18:19:33,332 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 18:19:33,332 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 18:19:33,332 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 18:19:33,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-06 18:19:33,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2024-11-06 18:19:33,340 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 18:19:33,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2024-11-06 18:19:33,342 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 42 [2024-11-06 18:19:33,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:19:33,343 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2024-11-06 18:19:33,343 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 18:19:33,343 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2024-11-06 18:19:33,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-06 18:19:33,344 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:19:33,344 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 18:19:33,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-06 18:19:33,550 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 18:19:33,551 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:19:33,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:19:33,551 INFO L85 PathProgramCache]: Analyzing trace with hash -604386836, now seen corresponding path program 2 times [2024-11-06 18:19:33,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:19:33,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62876972] [2024-11-06 18:19:33,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:19:33,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:19:33,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:33,605 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-06 18:19:33,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:33,636 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-06 18:19:33,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:33,643 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-06 18:19:33,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:33,651 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 18:19:33,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:19:33,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62876972] [2024-11-06 18:19:33,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62876972] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:19:33,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506731154] [2024-11-06 18:19:33,653 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 18:19:33,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:19:33,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:19:33,655 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 18:19:33,657 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 18:19:33,757 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 18:19:33,757 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:19:33,760 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-06 18:19:33,762 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:19:33,818 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 18:19:33,819 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:19:33,916 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 18:19:33,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506731154] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:19:33,917 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:19:33,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2024-11-06 18:19:33,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316292201] [2024-11-06 18:19:33,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:19:33,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-06 18:19:33,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:19:33,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-06 18:19:33,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-06 18:19:33,920 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 18:19:33,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:19:33,992 INFO L93 Difference]: Finished difference Result 86 states and 112 transitions. [2024-11-06 18:19:33,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-06 18:19:33,995 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 18:19:33,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:19:33,996 INFO L225 Difference]: With dead ends: 86 [2024-11-06 18:19:33,996 INFO L226 Difference]: Without dead ends: 56 [2024-11-06 18:19:33,997 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 18:19:33,997 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 18:19:33,997 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 18:19:33,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-06 18:19:34,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 51. [2024-11-06 18:19:34,007 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 18:19:34,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2024-11-06 18:19:34,010 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 57 [2024-11-06 18:19:34,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:19:34,010 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2024-11-06 18:19:34,010 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 18:19:34,010 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2024-11-06 18:19:34,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-06 18:19:34,012 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:19:34,013 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 18:19:34,033 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 18:19:34,213 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 18:19:34,214 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:19:34,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:19:34,214 INFO L85 PathProgramCache]: Analyzing trace with hash 948362870, now seen corresponding path program 1 times [2024-11-06 18:19:34,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:19:34,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498038768] [2024-11-06 18:19:34,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:19:34,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:19:34,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:34,330 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-06 18:19:34,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:34,341 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-06 18:19:34,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:34,348 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-06 18:19:34,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:34,358 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 18:19:34,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:19:34,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498038768] [2024-11-06 18:19:34,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498038768] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:19:34,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191956127] [2024-11-06 18:19:34,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:19:34,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:19:34,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:19:34,361 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 18:19:34,363 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 18:19:34,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:34,485 INFO L255 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-06 18:19:34,488 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:19:34,629 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 18:19:34,630 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:19:34,907 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 18:19:34,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191956127] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:19:34,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:19:34,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 13, 13] total 26 [2024-11-06 18:19:34,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675411280] [2024-11-06 18:19:34,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:19:34,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-06 18:19:34,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:19:34,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-06 18:19:34,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=369, Unknown=0, NotChecked=0, Total=650 [2024-11-06 18:19:34,912 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 18:19:35,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:19:35,026 INFO L93 Difference]: Finished difference Result 106 states and 130 transitions. [2024-11-06 18:19:35,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-06 18:19:35,027 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 18:19:35,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:19:35,028 INFO L225 Difference]: With dead ends: 106 [2024-11-06 18:19:35,028 INFO L226 Difference]: Without dead ends: 78 [2024-11-06 18:19:35,028 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 18:19:35,029 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 18:19:35,029 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 18:19:35,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-06 18:19:35,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2024-11-06 18:19:35,038 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 18:19:35,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 83 transitions. [2024-11-06 18:19:35,041 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 83 transitions. Word has length 78 [2024-11-06 18:19:35,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:19:35,041 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 83 transitions. [2024-11-06 18:19:35,041 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 18:19:35,041 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 83 transitions. [2024-11-06 18:19:35,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-06 18:19:35,042 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:19:35,044 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 18:19:35,062 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 18:19:35,244 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 18:19:35,245 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:19:35,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:19:35,245 INFO L85 PathProgramCache]: Analyzing trace with hash 869295696, now seen corresponding path program 2 times [2024-11-06 18:19:35,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:19:35,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348784483] [2024-11-06 18:19:35,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:19:35,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:19:35,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:36,054 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-06 18:19:36,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:36,066 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-06 18:19:36,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:36,074 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-11-06 18:19:36,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:36,082 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 18:19:36,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:19:36,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348784483] [2024-11-06 18:19:36,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348784483] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:19:36,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870895803] [2024-11-06 18:19:36,083 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 18:19:36,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:19:36,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:19:36,086 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 18:19:36,090 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 18:19:36,227 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 18:19:36,228 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:19:36,230 INFO L255 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-06 18:19:36,234 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:19:36,321 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 18:19:36,321 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:19:37,171 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 18:19:37,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870895803] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:19:37,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:19:37,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-11-06 18:19:37,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692808265] [2024-11-06 18:19:37,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:19:37,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-06 18:19:37,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:19:37,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-06 18:19:37,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-06 18:19:37,178 INFO L87 Difference]: Start difference. First operand 77 states and 83 transitions. Second operand has 49 states, 49 states have (on average 2.489795918367347) internal successors, (122), 49 states have internal predecessors, (122), 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 18:19:37,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:19:37,336 INFO L93 Difference]: Finished difference Result 155 states and 190 transitions. [2024-11-06 18:19:37,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-06 18:19:37,337 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.489795918367347) internal successors, (122), 49 states have internal predecessors, (122), 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 18:19:37,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:19:37,339 INFO L225 Difference]: With dead ends: 155 [2024-11-06 18:19:37,340 INFO L226 Difference]: Without dead ends: 125 [2024-11-06 18:19:37,342 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-06 18:19:37,344 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 2 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:19:37,345 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 178 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:19:37,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-11-06 18:19:37,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2024-11-06 18:19:37,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 120 states have (on average 1.0416666666666667) internal successors, (125), 120 states have internal predecessors, (125), 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 18:19:37,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 131 transitions. [2024-11-06 18:19:37,360 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 131 transitions. Word has length 104 [2024-11-06 18:19:37,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:19:37,361 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 131 transitions. [2024-11-06 18:19:37,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.489795918367347) internal successors, (122), 49 states have internal predecessors, (122), 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 18:19:37,361 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 131 transitions. [2024-11-06 18:19:37,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-06 18:19:37,366 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:19:37,366 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 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 18:19:37,387 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-06 18:19:37,566 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 18:19:37,567 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:19:37,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:19:37,567 INFO L85 PathProgramCache]: Analyzing trace with hash 605357184, now seen corresponding path program 3 times [2024-11-06 18:19:37,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:19:37,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191869326] [2024-11-06 18:19:37,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:19:37,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:19:37,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:39,647 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-11-06 18:19:39,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:39,657 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-11-06 18:19:39,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:39,662 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-11-06 18:19:39,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:39,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2270 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2024-11-06 18:19:39,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:19:39,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191869326] [2024-11-06 18:19:39,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191869326] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:19:39,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403877344] [2024-11-06 18:19:39,671 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-06 18:19:39,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:19:39,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:19:39,674 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 18:19:39,675 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 18:19:39,809 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-06 18:19:39,809 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:19:39,811 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-06 18:19:39,818 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:19:39,907 INFO L134 CoverageAnalysis]: Checked inductivity of 2270 backedges. 48 proven. 2 refuted. 0 times theorem prover too weak. 2220 trivial. 0 not checked. [2024-11-06 18:19:39,907 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:19:40,012 INFO L134 CoverageAnalysis]: Checked inductivity of 2270 backedges. 48 proven. 2 refuted. 0 times theorem prover too weak. 2220 trivial. 0 not checked. [2024-11-06 18:19:40,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403877344] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:19:40,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:19:40,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 5, 5] total 55 [2024-11-06 18:19:40,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34639726] [2024-11-06 18:19:40,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:19:40,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-11-06 18:19:40,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:19:40,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-11-06 18:19:40,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1203, Invalid=1767, Unknown=0, NotChecked=0, Total=2970 [2024-11-06 18:19:40,018 INFO L87 Difference]: Start difference. First operand 125 states and 131 transitions. Second operand has 55 states, 55 states have (on average 2.5090909090909093) internal successors, (138), 55 states have internal predecessors, (138), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-06 18:19:40,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:19:40,216 INFO L93 Difference]: Finished difference Result 170 states and 193 transitions. [2024-11-06 18:19:40,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-06 18:19:40,217 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.5090909090909093) internal successors, (138), 55 states have internal predecessors, (138), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 152 [2024-11-06 18:19:40,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:19:40,219 INFO L225 Difference]: With dead ends: 170 [2024-11-06 18:19:40,219 INFO L226 Difference]: Without dead ends: 140 [2024-11-06 18:19:40,222 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1203, Invalid=1767, Unknown=0, NotChecked=0, Total=2970 [2024-11-06 18:19:40,224 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 8 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 18:19:40,224 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 217 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 18:19:40,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-06 18:19:40,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 139. [2024-11-06 18:19:40,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 134 states have (on average 1.0671641791044777) internal successors, (143), 134 states have internal predecessors, (143), 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 18:19:40,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 149 transitions. [2024-11-06 18:19:40,243 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 149 transitions. Word has length 152 [2024-11-06 18:19:40,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:19:40,244 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 149 transitions. [2024-11-06 18:19:40,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.5090909090909093) internal successors, (138), 55 states have internal predecessors, (138), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-06 18:19:40,244 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 149 transitions. [2024-11-06 18:19:40,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-11-06 18:19:40,248 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:19:40,248 INFO L215 NwaCegarLoop]: trace histogram [47, 47, 21, 21, 15, 6, 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 18:19:40,267 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 18:19:40,449 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 18:19:40,449 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:19:40,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:19:40,450 INFO L85 PathProgramCache]: Analyzing trace with hash 281160770, now seen corresponding path program 4 times [2024-11-06 18:19:40,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:19:40,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686970697] [2024-11-06 18:19:40,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:19:40,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:19:40,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:42,464 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-11-06 18:19:42,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:42,475 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-11-06 18:19:42,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:42,482 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-11-06 18:19:42,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:42,494 INFO L134 CoverageAnalysis]: Checked inductivity of 2921 backedges. 0 proven. 2209 refuted. 0 times theorem prover too weak. 712 trivial. 0 not checked. [2024-11-06 18:19:42,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:19:42,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686970697] [2024-11-06 18:19:42,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686970697] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:19:42,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383764520] [2024-11-06 18:19:42,494 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-06 18:19:42,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:19:42,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:19:42,497 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 18:19:42,502 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 18:19:42,718 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-06 18:19:42,718 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:19:42,723 INFO L255 TraceCheckSpWp]: Trace formula consists of 722 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-06 18:19:42,727 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:19:42,810 INFO L134 CoverageAnalysis]: Checked inductivity of 2921 backedges. 428 proven. 7 refuted. 0 times theorem prover too weak. 2486 trivial. 0 not checked. [2024-11-06 18:19:42,812 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:19:42,922 INFO L134 CoverageAnalysis]: Checked inductivity of 2921 backedges. 202 proven. 172 refuted. 0 times theorem prover too weak. 2547 trivial. 0 not checked. [2024-11-06 18:19:42,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383764520] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:19:42,923 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:19:42,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 5, 5] total 56 [2024-11-06 18:19:42,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496489958] [2024-11-06 18:19:42,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:19:42,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-06 18:19:42,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:19:42,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-06 18:19:42,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1252, Invalid=1828, Unknown=0, NotChecked=0, Total=3080 [2024-11-06 18:19:42,928 INFO L87 Difference]: Start difference. First operand 139 states and 149 transitions. Second operand has 56 states, 56 states have (on average 2.625) internal successors, (147), 56 states have internal predecessors, (147), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-06 18:19:43,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:19:43,097 INFO L93 Difference]: Finished difference Result 196 states and 223 transitions. [2024-11-06 18:19:43,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-06 18:19:43,098 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.625) internal successors, (147), 56 states have internal predecessors, (147), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 190 [2024-11-06 18:19:43,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:19:43,099 INFO L225 Difference]: With dead ends: 196 [2024-11-06 18:19:43,099 INFO L226 Difference]: Without dead ends: 154 [2024-11-06 18:19:43,103 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1252, Invalid=1828, Unknown=0, NotChecked=0, Total=3080 [2024-11-06 18:19:43,103 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 3 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:19:43,104 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 135 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:19:43,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2024-11-06 18:19:43,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 153. [2024-11-06 18:19:43,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 148 states have (on average 1.0608108108108107) internal successors, (157), 148 states have internal predecessors, (157), 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 18:19:43,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 163 transitions. [2024-11-06 18:19:43,119 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 163 transitions. Word has length 190 [2024-11-06 18:19:43,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:19:43,119 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 163 transitions. [2024-11-06 18:19:43,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.625) internal successors, (147), 56 states have internal predecessors, (147), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-06 18:19:43,120 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 163 transitions. [2024-11-06 18:19:43,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-11-06 18:19:43,133 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:19:43,133 INFO L215 NwaCegarLoop]: trace histogram [48, 48, 33, 33, 18, 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 18:19:43,152 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 18:19:43,337 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 18:19:43,338 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:19:43,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:19:43,339 INFO L85 PathProgramCache]: Analyzing trace with hash 75986180, now seen corresponding path program 5 times [2024-11-06 18:19:43,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:19:43,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409097372] [2024-11-06 18:19:43,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:19:43,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:19:43,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:45,303 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-11-06 18:19:45,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:45,315 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-11-06 18:19:45,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:45,328 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-11-06 18:19:45,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:45,339 INFO L134 CoverageAnalysis]: Checked inductivity of 4006 backedges. 0 proven. 2304 refuted. 0 times theorem prover too weak. 1702 trivial. 0 not checked. [2024-11-06 18:19:45,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:19:45,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409097372] [2024-11-06 18:19:45,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409097372] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:19:45,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350559745] [2024-11-06 18:19:45,340 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-06 18:19:45,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:19:45,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:19:45,343 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 18:19:45,344 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 18:19:48,012 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2024-11-06 18:19:48,012 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:19:48,019 INFO L255 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-06 18:19:48,023 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:19:48,228 INFO L134 CoverageAnalysis]: Checked inductivity of 4006 backedges. 870 proven. 40 refuted. 0 times theorem prover too weak. 3096 trivial. 0 not checked. [2024-11-06 18:19:48,229 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:19:48,476 INFO L134 CoverageAnalysis]: Checked inductivity of 4006 backedges. 96 proven. 432 refuted. 0 times theorem prover too weak. 3478 trivial. 0 not checked. [2024-11-06 18:19:48,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350559745] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:19:48,476 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:19:48,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 9, 9] total 65 [2024-11-06 18:19:48,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360142414] [2024-11-06 18:19:48,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:19:48,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-11-06 18:19:48,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:19:48,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-11-06 18:19:48,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1394, Invalid=2766, Unknown=0, NotChecked=0, Total=4160 [2024-11-06 18:19:48,481 INFO L87 Difference]: Start difference. First operand 153 states and 163 transitions. Second operand has 65 states, 65 states have (on average 2.5538461538461537) internal successors, (166), 65 states have internal predecessors, (166), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-06 18:19:48,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:19:48,688 INFO L93 Difference]: Finished difference Result 234 states and 273 transitions. [2024-11-06 18:19:48,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2024-11-06 18:19:48,689 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.5538461538461537) internal successors, (166), 65 states have internal predecessors, (166), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 228 [2024-11-06 18:19:48,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:19:48,691 INFO L225 Difference]: With dead ends: 234 [2024-11-06 18:19:48,692 INFO L226 Difference]: Without dead ends: 180 [2024-11-06 18:19:48,693 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 511 GetRequests, 448 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1394, Invalid=2766, Unknown=0, NotChecked=0, Total=4160 [2024-11-06 18:19:48,695 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 8 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 18:19:48,695 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 196 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 18:19:48,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-11-06 18:19:48,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 179. [2024-11-06 18:19:48,710 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 18:19:48,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 197 transitions. [2024-11-06 18:19:48,712 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 197 transitions. Word has length 228 [2024-11-06 18:19:48,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:19:48,712 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 197 transitions. [2024-11-06 18:19:48,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 2.5538461538461537) internal successors, (166), 65 states have internal predecessors, (166), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-06 18:19:48,712 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 197 transitions. [2024-11-06 18:19:48,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2024-11-06 18:19:48,715 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:19:48,715 INFO L215 NwaCegarLoop]: trace histogram [57, 57, 49, 49, 39, 18, 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 18:19:48,738 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-06 18:19:48,916 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 18:19:48,916 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:19:48,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:19:48,917 INFO L85 PathProgramCache]: Analyzing trace with hash -559829370, now seen corresponding path program 6 times [2024-11-06 18:19:48,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:19:48,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897900915] [2024-11-06 18:19:48,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:19:48,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:19:49,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:50,738 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-11-06 18:19:50,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:50,751 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-11-06 18:19:50,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:50,763 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2024-11-06 18:19:50,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:50,778 INFO L134 CoverageAnalysis]: Checked inductivity of 7379 backedges. 0 proven. 2401 refuted. 0 times theorem prover too weak. 4978 trivial. 0 not checked. [2024-11-06 18:19:50,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:19:50,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897900915] [2024-11-06 18:19:50,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897900915] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:19:50,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384357228] [2024-11-06 18:19:50,779 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-06 18:19:50,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:19:50,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:19:50,781 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 18:19:50,783 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 18:19:50,992 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-06 18:19:50,992 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:19:50,994 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-06 18:19:50,998 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:19:51,076 INFO L134 CoverageAnalysis]: Checked inductivity of 7379 backedges. 2252 proven. 4 refuted. 0 times theorem prover too weak. 5123 trivial. 0 not checked. [2024-11-06 18:19:51,077 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:19:51,174 INFO L134 CoverageAnalysis]: Checked inductivity of 7379 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7375 trivial. 0 not checked. [2024-11-06 18:19:51,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384357228] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:19:51,175 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:19:51,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 5, 5] total 58 [2024-11-06 18:19:51,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191121624] [2024-11-06 18:19:51,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:19:51,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-11-06 18:19:51,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:19:51,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-11-06 18:19:51,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1353, Invalid=1953, Unknown=0, NotChecked=0, Total=3306 [2024-11-06 18:19:51,179 INFO L87 Difference]: Start difference. First operand 179 states and 197 transitions. Second operand has 58 states, 58 states have (on average 2.5) internal successors, (145), 58 states have internal predecessors, (145), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-06 18:19:51,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:19:51,338 INFO L93 Difference]: Finished difference Result 268 states and 308 transitions. [2024-11-06 18:19:51,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-06 18:19:51,339 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.5) internal successors, (145), 58 states have internal predecessors, (145), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 302 [2024-11-06 18:19:51,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:19:51,340 INFO L225 Difference]: With dead ends: 268 [2024-11-06 18:19:51,340 INFO L226 Difference]: Without dead ends: 190 [2024-11-06 18:19:51,342 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 660 GetRequests, 604 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1353, Invalid=1953, Unknown=0, NotChecked=0, Total=3306 [2024-11-06 18:19:51,342 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 3 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:19:51,343 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 184 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:19:51,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-11-06 18:19:51,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 189. [2024-11-06 18:19:51,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 184 states have (on average 1.0923913043478262) internal successors, (201), 184 states have internal predecessors, (201), 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 18:19:51,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 207 transitions. [2024-11-06 18:19:51,354 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 207 transitions. Word has length 302 [2024-11-06 18:19:51,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:19:51,355 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 207 transitions. [2024-11-06 18:19:51,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 2.5) internal successors, (145), 58 states have internal predecessors, (145), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-06 18:19:51,355 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 207 transitions. [2024-11-06 18:19:51,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2024-11-06 18:19:51,358 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:19:51,358 INFO L215 NwaCegarLoop]: trace histogram [57, 57, 50, 50, 39, 18, 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 18:19:51,377 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 18:19:51,559 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 18:19:51,561 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:19:51,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:19:51,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1171476976, now seen corresponding path program 7 times [2024-11-06 18:19:51,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:19:51,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117208503] [2024-11-06 18:19:51,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:19:51,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:19:51,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:53,269 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-11-06 18:19:53,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:53,279 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-11-06 18:19:53,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:53,290 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2024-11-06 18:19:53,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:53,306 INFO L134 CoverageAnalysis]: Checked inductivity of 7510 backedges. 0 proven. 2500 refuted. 0 times theorem prover too weak. 5010 trivial. 0 not checked. [2024-11-06 18:19:53,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:19:53,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117208503] [2024-11-06 18:19:53,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117208503] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:19:53,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474344055] [2024-11-06 18:19:53,307 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-06 18:19:53,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:19:53,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:19:53,312 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 18:19:53,313 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 18:19:53,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:53,642 INFO L255 TraceCheckSpWp]: Trace formula consists of 1017 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-06 18:19:53,647 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:19:53,802 INFO L134 CoverageAnalysis]: Checked inductivity of 7510 backedges. 0 proven. 2500 refuted. 0 times theorem prover too weak. 5010 trivial. 0 not checked. [2024-11-06 18:19:53,803 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:19:55,220 INFO L134 CoverageAnalysis]: Checked inductivity of 7510 backedges. 0 proven. 2500 refuted. 0 times theorem prover too weak. 5010 trivial. 0 not checked. [2024-11-06 18:19:55,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474344055] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:19:55,220 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:19:55,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53, 53] total 63 [2024-11-06 18:19:55,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189744152] [2024-11-06 18:19:55,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:19:55,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-11-06 18:19:55,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:19:55,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-11-06 18:19:55,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2024-11-06 18:19:55,223 INFO L87 Difference]: Start difference. First operand 189 states and 207 transitions. Second operand has 63 states, 63 states have (on average 2.4126984126984126) internal successors, (152), 63 states have internal predecessors, (152), 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 18:19:55,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:19:55,366 INFO L93 Difference]: Finished difference Result 295 states and 340 transitions. [2024-11-06 18:19:55,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-06 18:19:55,367 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.4126984126984126) internal successors, (152), 63 states have internal predecessors, (152), 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 312 [2024-11-06 18:19:55,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:19:55,370 INFO L225 Difference]: With dead ends: 295 [2024-11-06 18:19:55,370 INFO L226 Difference]: Without dead ends: 209 [2024-11-06 18:19:55,371 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 681 GetRequests, 578 SyntacticMatches, 42 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1439 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2024-11-06 18:19:55,372 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 1 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:19:55,373 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 128 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:19:55,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2024-11-06 18:19:55,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2024-11-06 18:19:55,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 204 states have (on average 1.0833333333333333) internal successors, (221), 204 states have internal predecessors, (221), 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 18:19:55,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 227 transitions. [2024-11-06 18:19:55,382 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 227 transitions. Word has length 312 [2024-11-06 18:19:55,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:19:55,384 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 227 transitions. [2024-11-06 18:19:55,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 2.4126984126984126) internal successors, (152), 63 states have internal predecessors, (152), 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 18:19:55,384 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 227 transitions. [2024-11-06 18:19:55,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2024-11-06 18:19:55,388 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:19:55,388 INFO L215 NwaCegarLoop]: trace histogram [60, 60, 57, 57, 39, 18, 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 18:19:55,408 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-06 18:19:55,588 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 18:19:55,589 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:19:55,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:19:55,589 INFO L85 PathProgramCache]: Analyzing trace with hash 807650724, now seen corresponding path program 8 times [2024-11-06 18:19:55,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:19:55,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243357158] [2024-11-06 18:19:55,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:19:55,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:19:55,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:55,916 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-11-06 18:19:55,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:55,989 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-11-06 18:19:55,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:56,003 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2024-11-06 18:19:56,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:56,016 INFO L134 CoverageAnalysis]: Checked inductivity of 8610 backedges. 253 proven. 2307 refuted. 0 times theorem prover too weak. 6050 trivial. 0 not checked. [2024-11-06 18:19:56,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:19:56,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243357158] [2024-11-06 18:19:56,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243357158] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:19:56,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333848642] [2024-11-06 18:19:56,017 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 18:19:56,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:19:56,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:19:56,020 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 18:19:56,023 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 18:19:56,336 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 18:19:56,336 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:19:56,341 INFO L255 TraceCheckSpWp]: Trace formula consists of 1107 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-06 18:19:56,345 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:19:56,369 INFO L134 CoverageAnalysis]: Checked inductivity of 8610 backedges. 1029 proven. 57 refuted. 0 times theorem prover too weak. 7524 trivial. 0 not checked. [2024-11-06 18:19:56,369 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:19:56,469 INFO L134 CoverageAnalysis]: Checked inductivity of 8610 backedges. 253 proven. 2307 refuted. 0 times theorem prover too weak. 6050 trivial. 0 not checked. [2024-11-06 18:19:56,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333848642] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:19:56,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:19:56,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-11-06 18:19:56,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170185391] [2024-11-06 18:19:56,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:19:56,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-06 18:19:56,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:19:56,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-06 18:19:56,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2024-11-06 18:19:56,471 INFO L87 Difference]: Start difference. First operand 209 states and 227 transitions. Second operand has 16 states, 16 states have (on average 4.5625) internal successors, (73), 16 states have internal predecessors, (73), 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 18:19:56,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:19:56,537 INFO L93 Difference]: Finished difference Result 317 states and 362 transitions. [2024-11-06 18:19:56,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-06 18:19:56,538 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.5625) internal successors, (73), 16 states have internal predecessors, (73), 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 332 [2024-11-06 18:19:56,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:19:56,540 INFO L225 Difference]: With dead ends: 317 [2024-11-06 18:19:56,540 INFO L226 Difference]: Without dead ends: 233 [2024-11-06 18:19:56,540 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 677 GetRequests, 663 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2024-11-06 18:19:56,541 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 2 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:19:56,541 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 123 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:19:56,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2024-11-06 18:19:56,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2024-11-06 18:19:56,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 228 states have (on average 1.0745614035087718) internal successors, (245), 228 states have internal predecessors, (245), 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 18:19:56,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 251 transitions. [2024-11-06 18:19:56,556 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 251 transitions. Word has length 332 [2024-11-06 18:19:56,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:19:56,558 INFO L471 AbstractCegarLoop]: Abstraction has 233 states and 251 transitions. [2024-11-06 18:19:56,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.5625) internal successors, (73), 16 states have internal predecessors, (73), 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 18:19:56,558 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 251 transitions. [2024-11-06 18:19:56,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2024-11-06 18:19:56,564 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:19:56,564 INFO L215 NwaCegarLoop]: trace histogram [81, 81, 60, 60, 42, 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 18:19:56,585 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-06 18:19:56,765 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 18:19:56,765 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:19:56,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:19:56,766 INFO L85 PathProgramCache]: Analyzing trace with hash 2042170404, now seen corresponding path program 9 times [2024-11-06 18:19:56,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:19:56,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835900105] [2024-11-06 18:19:56,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:19:56,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:19:56,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:57,219 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-11-06 18:19:57,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:57,396 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-11-06 18:19:57,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:57,410 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2024-11-06 18:19:57,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:57,423 INFO L134 CoverageAnalysis]: Checked inductivity of 13614 backedges. 557 proven. 4791 refuted. 0 times theorem prover too weak. 8266 trivial. 0 not checked. [2024-11-06 18:19:57,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:19:57,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835900105] [2024-11-06 18:19:57,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835900105] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:19:57,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834516197] [2024-11-06 18:19:57,423 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-06 18:19:57,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:19:57,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:19:57,426 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 18:19:57,429 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 18:19:57,795 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-06 18:19:57,796 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:19:57,799 INFO L255 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-06 18:19:57,812 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:19:57,927 INFO L134 CoverageAnalysis]: Checked inductivity of 13614 backedges. 4492 proven. 36 refuted. 0 times theorem prover too weak. 9086 trivial. 0 not checked. [2024-11-06 18:19:57,927 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:19:58,088 INFO L134 CoverageAnalysis]: Checked inductivity of 13614 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 13578 trivial. 0 not checked. [2024-11-06 18:19:58,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834516197] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:19:58,088 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:19:58,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 9, 9] total 31 [2024-11-06 18:19:58,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348184303] [2024-11-06 18:19:58,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:19:58,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-06 18:19:58,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:19:58,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-06 18:19:58,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2024-11-06 18:19:58,093 INFO L87 Difference]: Start difference. First operand 233 states and 251 transitions. Second operand has 31 states, 31 states have (on average 3.3870967741935485) internal successors, (105), 31 states have internal predecessors, (105), 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 18:19:58,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:19:58,201 INFO L93 Difference]: Finished difference Result 361 states and 407 transitions. [2024-11-06 18:19:58,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-06 18:19:58,202 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.3870967741935485) internal successors, (105), 31 states have internal predecessors, (105), 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 404 [2024-11-06 18:19:58,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:19:58,204 INFO L225 Difference]: With dead ends: 361 [2024-11-06 18:19:58,204 INFO L226 Difference]: Without dead ends: 253 [2024-11-06 18:19:58,206 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 829 GetRequests, 800 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2024-11-06 18:19:58,207 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 3 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:19:58,207 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 220 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:19:58,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2024-11-06 18:19:58,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 252. [2024-11-06 18:19:58,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 247 states have (on average 1.0688259109311742) internal successors, (264), 247 states have internal predecessors, (264), 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 18:19:58,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 270 transitions. [2024-11-06 18:19:58,216 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 270 transitions. Word has length 404 [2024-11-06 18:19:58,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:19:58,216 INFO L471 AbstractCegarLoop]: Abstraction has 252 states and 270 transitions. [2024-11-06 18:19:58,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.3870967741935485) internal successors, (105), 31 states have internal predecessors, (105), 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 18:19:58,216 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 270 transitions. [2024-11-06 18:19:58,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2024-11-06 18:19:58,219 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:19:58,219 INFO L215 NwaCegarLoop]: trace histogram [84, 84, 60, 60, 45, 39, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:19:58,234 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 18:19:58,419 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 18:19:58,420 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:19:58,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:19:58,420 INFO L85 PathProgramCache]: Analyzing trace with hash 2067191105, now seen corresponding path program 10 times [2024-11-06 18:19:58,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:19:58,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910878213] [2024-11-06 18:19:58,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:19:58,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:19:58,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:58,828 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-11-06 18:19:58,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:59,029 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-11-06 18:19:59,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:59,044 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2024-11-06 18:19:59,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:19:59,058 INFO L134 CoverageAnalysis]: Checked inductivity of 14521 backedges. 595 proven. 5169 refuted. 0 times theorem prover too weak. 8757 trivial. 0 not checked. [2024-11-06 18:19:59,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:19:59,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910878213] [2024-11-06 18:19:59,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910878213] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:19:59,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182839608] [2024-11-06 18:19:59,058 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-06 18:19:59,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:19:59,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:19:59,061 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 18:19:59,062 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 18:19:59,442 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-06 18:19:59,442 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:19:59,450 INFO L255 TraceCheckSpWp]: Trace formula consists of 1271 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-06 18:19:59,456 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:19:59,519 INFO L134 CoverageAnalysis]: Checked inductivity of 14521 backedges. 6753 proven. 345 refuted. 0 times theorem prover too weak. 7423 trivial. 0 not checked. [2024-11-06 18:19:59,520 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:19:59,899 INFO L134 CoverageAnalysis]: Checked inductivity of 14521 backedges. 3007 proven. 2757 refuted. 0 times theorem prover too weak. 8757 trivial. 0 not checked. [2024-11-06 18:19:59,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182839608] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:19:59,899 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:19:59,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 33 [2024-11-06 18:19:59,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222375986] [2024-11-06 18:19:59,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:19:59,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-06 18:19:59,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:19:59,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-06 18:19:59,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2024-11-06 18:19:59,902 INFO L87 Difference]: Start difference. First operand 252 states and 270 transitions. Second operand has 33 states, 33 states have (on average 3.8484848484848486) internal successors, (127), 33 states have internal predecessors, (127), 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 18:20:00,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:20:00,001 INFO L93 Difference]: Finished difference Result 427 states and 480 transitions. [2024-11-06 18:20:00,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-06 18:20:00,002 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.8484848484848486) internal successors, (127), 33 states have internal predecessors, (127), 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 429 [2024-11-06 18:20:00,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:20:00,004 INFO L225 Difference]: With dead ends: 427 [2024-11-06 18:20:00,005 INFO L226 Difference]: Without dead ends: 300 [2024-11-06 18:20:00,007 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 880 GetRequests, 848 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2024-11-06 18:20:00,007 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 1 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:20:00,007 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 171 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:20:00,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2024-11-06 18:20:00,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 300. [2024-11-06 18:20:00,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 295 states have (on average 1.0576271186440678) internal successors, (312), 295 states have internal predecessors, (312), 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 18:20:00,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 318 transitions. [2024-11-06 18:20:00,050 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 318 transitions. Word has length 429 [2024-11-06 18:20:00,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:20:00,051 INFO L471 AbstractCegarLoop]: Abstraction has 300 states and 318 transitions. [2024-11-06 18:20:00,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.8484848484848486) internal successors, (127), 33 states have internal predecessors, (127), 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 18:20:00,052 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 318 transitions. [2024-11-06 18:20:00,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 574 [2024-11-06 18:20:00,055 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:20:00,056 INFO L215 NwaCegarLoop]: trace histogram [132, 132, 93, 60, 60, 39, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:20:00,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-06 18:20:00,256 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 18:20:00,257 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:20:00,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:20:00,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1568942015, now seen corresponding path program 11 times [2024-11-06 18:20:00,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:20:00,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767232772] [2024-11-06 18:20:00,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:20:00,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:20:00,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:20:00,957 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-11-06 18:20:00,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:20:00,980 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-11-06 18:20:00,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:20:01,001 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2024-11-06 18:20:01,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:20:01,029 INFO L134 CoverageAnalysis]: Checked inductivity of 30145 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 29949 trivial. 0 not checked. [2024-11-06 18:20:01,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:20:01,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767232772] [2024-11-06 18:20:01,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767232772] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:20:01,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888122693] [2024-11-06 18:20:01,030 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-06 18:20:01,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:20:01,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:20:01,033 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 18:20:01,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-06 18:20:01,330 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2024-11-06 18:20:01,331 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:20:01,333 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-06 18:20:01,339 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:20:01,623 INFO L134 CoverageAnalysis]: Checked inductivity of 30145 backedges. 13101 proven. 301 refuted. 0 times theorem prover too weak. 16743 trivial. 0 not checked. [2024-11-06 18:20:01,623 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:20:02,044 INFO L134 CoverageAnalysis]: Checked inductivity of 30145 backedges. 1305 proven. 4209 refuted. 0 times theorem prover too weak. 24631 trivial. 0 not checked. [2024-11-06 18:20:02,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888122693] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:20:02,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:20:02,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 18] total 47 [2024-11-06 18:20:02,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744661802] [2024-11-06 18:20:02,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:20:02,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-06 18:20:02,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:20:02,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-06 18:20:02,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=631, Invalid=1531, Unknown=0, NotChecked=0, Total=2162 [2024-11-06 18:20:02,048 INFO L87 Difference]: Start difference. First operand 300 states and 318 transitions. Second operand has 47 states, 47 states have (on average 3.2127659574468086) internal successors, (151), 47 states have internal predecessors, (151), 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 18:20:02,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:20:02,234 INFO L93 Difference]: Finished difference Result 526 states and 596 transitions. [2024-11-06 18:20:02,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-06 18:20:02,235 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 3.2127659574468086) internal successors, (151), 47 states have internal predecessors, (151), 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 573 [2024-11-06 18:20:02,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:20:02,237 INFO L225 Difference]: With dead ends: 526 [2024-11-06 18:20:02,237 INFO L226 Difference]: Without dead ends: 351 [2024-11-06 18:20:02,240 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1167 GetRequests, 1120 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=631, Invalid=1531, Unknown=0, NotChecked=0, Total=2162 [2024-11-06 18:20:02,241 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 6 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:20:02,241 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 190 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:20:02,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2024-11-06 18:20:02,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 350. [2024-11-06 18:20:02,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 345 states have (on average 1.0956521739130434) internal successors, (378), 345 states have internal predecessors, (378), 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 18:20:02,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 384 transitions. [2024-11-06 18:20:02,261 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 384 transitions. Word has length 573 [2024-11-06 18:20:02,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:20:02,261 INFO L471 AbstractCegarLoop]: Abstraction has 350 states and 384 transitions. [2024-11-06 18:20:02,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 3.2127659574468086) internal successors, (151), 47 states have internal predecessors, (151), 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 18:20:02,262 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 384 transitions. [2024-11-06 18:20:02,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 720 [2024-11-06 18:20:02,267 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:20:02,267 INFO L215 NwaCegarLoop]: trace histogram [180, 180, 93, 87, 60, 60, 15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:20:02,286 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-06 18:20:02,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-06 18:20:02,468 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:20:02,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:20:02,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1500400063, now seen corresponding path program 12 times [2024-11-06 18:20:02,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:20:02,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643109208] [2024-11-06 18:20:02,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:20:02,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:20:02,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:20:03,149 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-11-06 18:20:03,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:20:03,183 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2024-11-06 18:20:03,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:20:03,205 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 530 [2024-11-06 18:20:03,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:20:03,234 INFO L134 CoverageAnalysis]: Checked inductivity of 52710 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 52485 trivial. 0 not checked. [2024-11-06 18:20:03,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:20:03,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643109208] [2024-11-06 18:20:03,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643109208] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:20:03,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023139854] [2024-11-06 18:20:03,235 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-06 18:20:03,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:20:03,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:20:03,238 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:20:03,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-06 18:20:05,469 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 33 check-sat command(s) [2024-11-06 18:20:05,469 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:20:05,481 INFO L255 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-06 18:20:05,491 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:20:05,548 INFO L134 CoverageAnalysis]: Checked inductivity of 52710 backedges. 21850 proven. 225 refuted. 0 times theorem prover too weak. 30635 trivial. 0 not checked. [2024-11-06 18:20:05,548 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:20:05,872 INFO L134 CoverageAnalysis]: Checked inductivity of 52710 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 52485 trivial. 0 not checked. [2024-11-06 18:20:05,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023139854] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:20:05,873 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:20:05,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 35 [2024-11-06 18:20:05,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410519295] [2024-11-06 18:20:05,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:20:05,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-06 18:20:05,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:20:05,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-06 18:20:05,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2024-11-06 18:20:05,876 INFO L87 Difference]: Start difference. First operand 350 states and 384 transitions. Second operand has 35 states, 35 states have (on average 2.6857142857142855) internal successors, (94), 35 states have internal predecessors, (94), 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 18:20:05,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:20:05,957 INFO L93 Difference]: Finished difference Result 575 states and 656 transitions. [2024-11-06 18:20:05,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-06 18:20:05,957 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.6857142857142855) internal successors, (94), 35 states have internal predecessors, (94), 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 719 [2024-11-06 18:20:05,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:20:05,960 INFO L225 Difference]: With dead ends: 575 [2024-11-06 18:20:05,960 INFO L226 Difference]: Without dead ends: 384 [2024-11-06 18:20:05,961 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1460 GetRequests, 1427 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2024-11-06 18:20:05,961 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 2 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:20:05,962 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 196 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:20:05,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2024-11-06 18:20:05,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 384. [2024-11-06 18:20:05,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 379 states have (on average 1.087071240105541) internal successors, (412), 379 states have internal predecessors, (412), 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 18:20:05,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 418 transitions. [2024-11-06 18:20:05,976 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 418 transitions. Word has length 719 [2024-11-06 18:20:05,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:20:05,976 INFO L471 AbstractCegarLoop]: Abstraction has 384 states and 418 transitions. [2024-11-06 18:20:05,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.6857142857142855) internal successors, (94), 35 states have internal predecessors, (94), 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 18:20:05,977 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 418 transitions. [2024-11-06 18:20:05,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 754 [2024-11-06 18:20:05,981 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:20:05,982 INFO L215 NwaCegarLoop]: trace histogram [180, 180, 93, 87, 60, 60, 32, 32, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:20:05,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-06 18:20:06,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-06 18:20:06,186 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:20:06,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:20:06,186 INFO L85 PathProgramCache]: Analyzing trace with hash -443113827, now seen corresponding path program 13 times [2024-11-06 18:20:06,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:20:06,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343702083] [2024-11-06 18:20:06,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:20:06,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:20:06,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:20:07,543 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-11-06 18:20:07,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:20:07,565 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2024-11-06 18:20:07,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:20:07,588 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 564 [2024-11-06 18:20:07,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:20:07,618 INFO L134 CoverageAnalysis]: Checked inductivity of 53509 backedges. 0 proven. 1024 refuted. 0 times theorem prover too weak. 52485 trivial. 0 not checked. [2024-11-06 18:20:07,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:20:07,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343702083] [2024-11-06 18:20:07,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343702083] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:20:07,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063424054] [2024-11-06 18:20:07,618 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-06 18:20:07,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:20:07,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:20:07,621 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:20:07,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-06 18:20:08,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:20:08,145 INFO L255 TraceCheckSpWp]: Trace formula consists of 1973 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-06 18:20:08,154 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:20:08,254 INFO L134 CoverageAnalysis]: Checked inductivity of 53509 backedges. 21850 proven. 1024 refuted. 0 times theorem prover too weak. 30635 trivial. 0 not checked. [2024-11-06 18:20:08,254 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:20:09,257 INFO L134 CoverageAnalysis]: Checked inductivity of 53509 backedges. 0 proven. 1024 refuted. 0 times theorem prover too weak. 52485 trivial. 0 not checked. [2024-11-06 18:20:09,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063424054] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:20:09,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:20:09,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 62 [2024-11-06 18:20:09,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588632499] [2024-11-06 18:20:09,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:20:09,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-11-06 18:20:09,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:20:09,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-11-06 18:20:09,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2024-11-06 18:20:09,262 INFO L87 Difference]: Start difference. First operand 384 states and 418 transitions. Second operand has 62 states, 62 states have (on average 2.4193548387096775) internal successors, (150), 62 states have internal predecessors, (150), 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 18:20:09,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:20:09,423 INFO L93 Difference]: Finished difference Result 629 states and 720 transitions. [2024-11-06 18:20:09,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-11-06 18:20:09,424 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 2.4193548387096775) internal successors, (150), 62 states have internal predecessors, (150), 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 753 [2024-11-06 18:20:09,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:20:09,428 INFO L225 Difference]: With dead ends: 629 [2024-11-06 18:20:09,428 INFO L226 Difference]: Without dead ends: 438 [2024-11-06 18:20:09,429 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1545 GetRequests, 1478 SyntacticMatches, 7 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2024-11-06 18:20:09,430 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 1 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:20:09,430 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 148 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:20:09,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2024-11-06 18:20:09,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 438. [2024-11-06 18:20:09,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 433 states have (on average 1.0762124711316396) internal successors, (466), 433 states have internal predecessors, (466), 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 18:20:09,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 472 transitions. [2024-11-06 18:20:09,445 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 472 transitions. Word has length 753 [2024-11-06 18:20:09,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:20:09,446 INFO L471 AbstractCegarLoop]: Abstraction has 438 states and 472 transitions. [2024-11-06 18:20:09,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 2.4193548387096775) internal successors, (150), 62 states have internal predecessors, (150), 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 18:20:09,446 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 472 transitions. [2024-11-06 18:20:09,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 808 [2024-11-06 18:20:09,452 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:20:09,452 INFO L215 NwaCegarLoop]: trace histogram [180, 180, 93, 87, 60, 60, 59, 59, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:20:09,476 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-06 18:20:09,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:20:09,653 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:20:09,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:20:09,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1348616601, now seen corresponding path program 14 times [2024-11-06 18:20:09,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:20:09,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371545431] [2024-11-06 18:20:09,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:20:09,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:20:19,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 18:20:19,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1982296492] [2024-11-06 18:20:19,498 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 18:20:19,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:20:19,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:20:19,500 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:20:19,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process