./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/sum_20x0-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4f9af400 extending candidate: java ['java'] extending candidate: /usr/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/oracle-jdk-bin-*/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/openjdk-*/bin/java ['java', '/usr/bin/java'] extending candidate: /usr/lib/jvm/java-*-openjdk-amd64/bin/java ['java', '/usr/bin/java', '/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java', '/usr/lib/jvm/java-17-openjdk-amd64/bin/java', '/usr/lib/jvm/java-11-openjdk-amd64/bin/java', '/usr/lib/jvm/java-1.17.0-openjdk-amd64/bin/java'] ['/root/.sdkman/candidates/java/21.0.5-tem/bin/java', '-Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config', '-Xmx15G', '-Xms4m', '-jar', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar', '-data', '@noDefault', '-ultimatedata', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data', '-tc', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml', '-i', '../sv-benchmarks/c/recursive-simple/sum_20x0-2.c', '-s', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf', '--cacsl2boogietranslator.entry.function', 'main', '--witnessprinter.witness.directory', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux', '--witnessprinter.witness.filename', 'witness', '--witnessprinter.write.witness.besides.input.file', 'false', '--witnessprinter.graph.data.specification', 'CHECK( init(main()), LTL(G ! call(reach_error())) )\n\n', '--witnessprinter.graph.data.producer', 'Automizer', '--witnessprinter.graph.data.architecture', '32bit', '--witnessprinter.graph.data.programhash', '2467b918f90fe26ead39772ec36304202be3f16a6c04dfdd5844d39d05599b5a'] Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive-simple/sum_20x0-2.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2467b918f90fe26ead39772ec36304202be3f16a6c04dfdd5844d39d05599b5a --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-06 23:49:55,252 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 23:49:55,334 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-06 23:49:55,339 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 23:49:55,339 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 23:49:55,362 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 23:49:55,364 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 23:49:55,365 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 23:49:55,365 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 23:49:55,365 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 23:49:55,366 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 23:49:55,366 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 23:49:55,366 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 23:49:55,366 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 23:49:55,366 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 23:49:55,367 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 23:49:55,367 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 23:49:55,367 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-06 23:49:55,367 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-06 23:49:55,367 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-06 23:49:55,367 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 23:49:55,367 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 23:49:55,368 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 23:49:55,368 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 23:49:55,368 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 23:49:55,368 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-06 23:49:55,368 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 23:49:55,368 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 23:49:55,368 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 23:49:55,368 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 23:49:55,368 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 23:49:55,368 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 23:49:55,369 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 23:49:55,369 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 23:49:55,369 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 23:49:55,369 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 23:49:55,369 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-06 23:49:55,369 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-06 23:49:55,369 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 23:49:55,369 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 23:49:55,370 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 23:49:55,370 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 23:49:55,370 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 -> 2467b918f90fe26ead39772ec36304202be3f16a6c04dfdd5844d39d05599b5a [2024-11-06 23:49:55,595 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 23:49:55,604 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 23:49:55,605 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 23:49:55,606 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 23:49:55,606 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 23:49:55,607 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/sum_20x0-2.c [2024-11-06 23:49:56,690 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 23:49:56,892 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 23:49:56,893 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursive-simple/sum_20x0-2.c [2024-11-06 23:49:56,898 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/51ee633fd/69428ad8779c449b88418b0f74daada0/FLAGe230f2158 [2024-11-06 23:49:57,259 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/51ee633fd/69428ad8779c449b88418b0f74daada0 [2024-11-06 23:49:57,260 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 23:49:57,261 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-06 23:49:57,262 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 23:49:57,262 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 23:49:57,265 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 23:49:57,266 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:49:57" (1/1) ... [2024-11-06 23:49:57,266 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bcd92b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:49:57, skipping insertion in model container [2024-11-06 23:49:57,266 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:49:57" (1/1) ... [2024-11-06 23:49:57,274 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 23:49:57,360 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursive-simple/sum_20x0-2.c[481,494] [2024-11-06 23:49:57,362 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 23:49:57,367 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 23:49:57,374 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursive-simple/sum_20x0-2.c[481,494] [2024-11-06 23:49:57,374 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 23:49:57,383 INFO L204 MainTranslator]: Completed translation [2024-11-06 23:49:57,383 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:49:57 WrapperNode [2024-11-06 23:49:57,383 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 23:49:57,384 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 23:49:57,384 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 23:49:57,384 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 23:49:57,388 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:49:57" (1/1) ... [2024-11-06 23:49:57,391 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:49:57" (1/1) ... [2024-11-06 23:49:57,400 INFO L138 Inliner]: procedures = 12, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2024-11-06 23:49:57,400 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 23:49:57,401 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 23:49:57,401 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 23:49:57,401 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 23:49:57,405 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:49:57" (1/1) ... [2024-11-06 23:49:57,406 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:49:57" (1/1) ... [2024-11-06 23:49:57,406 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:49:57" (1/1) ... [2024-11-06 23:49:57,412 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-06 23:49:57,412 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:49:57" (1/1) ... [2024-11-06 23:49:57,413 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:49:57" (1/1) ... [2024-11-06 23:49:57,414 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:49:57" (1/1) ... [2024-11-06 23:49:57,415 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:49:57" (1/1) ... [2024-11-06 23:49:57,415 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:49:57" (1/1) ... [2024-11-06 23:49:57,415 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:49:57" (1/1) ... [2024-11-06 23:49:57,416 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 23:49:57,416 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 23:49:57,416 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 23:49:57,416 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 23:49:57,417 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:49:57" (1/1) ... [2024-11-06 23:49:57,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 23:49:57,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:49:57,438 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-06 23:49:57,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-06 23:49:57,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 23:49:57,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 23:49:57,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 23:49:57,457 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2024-11-06 23:49:57,457 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2024-11-06 23:49:57,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-06 23:49:57,495 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 23:49:57,496 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 23:49:57,549 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-11-06 23:49:57,549 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 23:49:57,555 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 23:49:57,555 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-06 23:49:57,555 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:49:57 BoogieIcfgContainer [2024-11-06 23:49:57,555 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 23:49:57,557 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 23:49:57,557 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 23:49:57,561 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 23:49:57,561 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:49:57" (1/3) ... [2024-11-06 23:49:57,561 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@678b1f9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:49:57, skipping insertion in model container [2024-11-06 23:49:57,561 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:49:57" (2/3) ... [2024-11-06 23:49:57,562 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@678b1f9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:49:57, skipping insertion in model container [2024-11-06 23:49:57,562 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:49:57" (3/3) ... [2024-11-06 23:49:57,562 INFO L112 eAbstractionObserver]: Analyzing ICFG sum_20x0-2.c [2024-11-06 23:49:57,574 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 23:49:57,574 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-06 23:49:57,608 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 23:49:57,615 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;@5ea27e93, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 23:49:57,616 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-06 23:49:57,619 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-06 23:49:57,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-06 23:49:57,623 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:49:57,624 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:49:57,624 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:49:57,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:49:57,627 INFO L85 PathProgramCache]: Analyzing trace with hash -358017204, now seen corresponding path program 1 times [2024-11-06 23:49:57,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:49:57,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292075380] [2024-11-06 23:49:57,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:49:57,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:49:57,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:49:57,753 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:49:57,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:49:57,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 23:49:57,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:49:57,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292075380] [2024-11-06 23:49:57,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292075380] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 23:49:57,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 23:49:57,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-06 23:49:57,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996426262] [2024-11-06 23:49:57,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 23:49:57,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 23:49:57,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:49:57,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 23:49:57,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 23:49:57,848 INFO L87 Difference]: Start difference. First operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-06 23:49:57,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:49:57,887 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2024-11-06 23:49:57,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 23:49:57,889 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-11-06 23:49:57,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:49:57,893 INFO L225 Difference]: With dead ends: 25 [2024-11-06 23:49:57,893 INFO L226 Difference]: Without dead ends: 15 [2024-11-06 23:49:57,897 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 23:49:57,899 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 4 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 23:49:57,900 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 35 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 23:49:57,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-11-06 23:49:57,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-11-06 23:49:57,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 11 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-06 23:49:57,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2024-11-06 23:49:57,926 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2024-11-06 23:49:57,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:49:57,927 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2024-11-06 23:49:57,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-06 23:49:57,927 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2024-11-06 23:49:57,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-06 23:49:57,929 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:49:57,929 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:49:57,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-06 23:49:57,930 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:49:57,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:49:57,930 INFO L85 PathProgramCache]: Analyzing trace with hash 679465686, now seen corresponding path program 1 times [2024-11-06 23:49:57,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:49:57,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285200630] [2024-11-06 23:49:57,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:49:57,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:49:57,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:49:57,989 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:49:57,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:49:58,054 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:49:58,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:49:58,097 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-06 23:49:58,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:49:58,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285200630] [2024-11-06 23:49:58,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285200630] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 23:49:58,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439879525] [2024-11-06 23:49:58,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:49:58,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:49:58,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:49:58,099 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 23:49:58,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-06 23:49:58,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:49:58,149 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-06 23:49:58,151 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:49:58,215 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-06 23:49:58,215 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:49:58,397 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-06 23:49:58,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439879525] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 23:49:58,398 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 23:49:58,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 10 [2024-11-06 23:49:58,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950548786] [2024-11-06 23:49:58,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 23:49:58,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-06 23:49:58,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:49:58,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-06 23:49:58,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-06 23:49:58,400 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 10 states, 8 states have (on average 2.375) internal successors, (19), 10 states have internal predecessors, (19), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-06 23:49:58,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:49:58,448 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2024-11-06 23:49:58,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-06 23:49:58,448 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.375) internal successors, (19), 10 states have internal predecessors, (19), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) Word has length 16 [2024-11-06 23:49:58,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:49:58,449 INFO L225 Difference]: With dead ends: 22 [2024-11-06 23:49:58,449 INFO L226 Difference]: Without dead ends: 18 [2024-11-06 23:49:58,449 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-11-06 23:49:58,450 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 11 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 23:49:58,450 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 37 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 23:49:58,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-11-06 23:49:58,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-11-06 23:49:58,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 13 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 23:49:58,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2024-11-06 23:49:58,455 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 16 [2024-11-06 23:49:58,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:49:58,455 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2024-11-06 23:49:58,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.375) internal successors, (19), 10 states have internal predecessors, (19), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-06 23:49:58,455 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2024-11-06 23:49:58,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-06 23:49:58,456 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:49:58,457 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:49:58,469 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-06 23:49:58,660 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 23:49:58,661 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:49:58,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:49:58,661 INFO L85 PathProgramCache]: Analyzing trace with hash -41010676, now seen corresponding path program 2 times [2024-11-06 23:49:58,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:49:58,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958004376] [2024-11-06 23:49:58,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:49:58,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:49:58,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:49:58,751 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:49:58,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:49:58,819 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:49:58,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:49:58,865 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:49:58,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:49:58,891 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-06 23:49:58,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:49:58,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958004376] [2024-11-06 23:49:58,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958004376] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 23:49:58,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245203130] [2024-11-06 23:49:58,894 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 23:49:58,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:49:58,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:49:58,896 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 23:49:58,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-06 23:49:58,938 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 23:49:58,938 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 23:49:58,939 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-06 23:49:58,940 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:49:58,979 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-06 23:49:58,979 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:49:59,237 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-06 23:49:59,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245203130] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 23:49:59,238 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 23:49:59,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 9] total 12 [2024-11-06 23:49:59,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927638854] [2024-11-06 23:49:59,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 23:49:59,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-06 23:49:59,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:49:59,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-06 23:49:59,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-11-06 23:49:59,242 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 12 states, 10 states have (on average 2.3) internal successors, (23), 12 states have internal predecessors, (23), 6 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (8), 3 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-06 23:49:59,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:49:59,292 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2024-11-06 23:49:59,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-06 23:49:59,292 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.3) internal successors, (23), 12 states have internal predecessors, (23), 6 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (8), 3 states have call predecessors, (8), 6 states have call successors, (8) Word has length 22 [2024-11-06 23:49:59,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:49:59,293 INFO L225 Difference]: With dead ends: 25 [2024-11-06 23:49:59,293 INFO L226 Difference]: Without dead ends: 21 [2024-11-06 23:49:59,293 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-11-06 23:49:59,294 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 14 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 23:49:59,294 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 44 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 23:49:59,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-06 23:49:59,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-11-06 23:49:59,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 15 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-06 23:49:59,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2024-11-06 23:49:59,297 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 22 [2024-11-06 23:49:59,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:49:59,297 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2024-11-06 23:49:59,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.3) internal successors, (23), 12 states have internal predecessors, (23), 6 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (8), 3 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-06 23:49:59,298 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2024-11-06 23:49:59,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-06 23:49:59,298 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:49:59,298 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:49:59,312 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-06 23:49:59,499 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 23:49:59,499 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:49:59,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:49:59,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1769866774, now seen corresponding path program 3 times [2024-11-06 23:49:59,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:49:59,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352113527] [2024-11-06 23:49:59,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:49:59,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:49:59,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:49:59,546 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:49:59,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:49:59,587 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:49:59,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:49:59,631 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:49:59,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:49:59,658 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:49:59,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:49:59,678 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-06 23:49:59,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:49:59,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352113527] [2024-11-06 23:49:59,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352113527] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 23:49:59,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712721351] [2024-11-06 23:49:59,679 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-06 23:49:59,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:49:59,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:49:59,682 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 23:49:59,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-06 23:49:59,721 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-06 23:49:59,721 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 23:49:59,722 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-06 23:49:59,723 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:49:59,764 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-06 23:49:59,765 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:50:00,211 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-06 23:50:00,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712721351] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 23:50:00,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 23:50:00,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 11] total 14 [2024-11-06 23:50:00,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357075919] [2024-11-06 23:50:00,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 23:50:00,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-06 23:50:00,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:50:00,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-06 23:50:00,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2024-11-06 23:50:00,213 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 14 states, 12 states have (on average 2.25) internal successors, (27), 14 states have internal predecessors, (27), 7 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (11), 4 states have call predecessors, (11), 7 states have call successors, (11) [2024-11-06 23:50:00,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:50:00,273 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2024-11-06 23:50:00,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-06 23:50:00,273 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.25) internal successors, (27), 14 states have internal predecessors, (27), 7 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (11), 4 states have call predecessors, (11), 7 states have call successors, (11) Word has length 28 [2024-11-06 23:50:00,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:50:00,274 INFO L225 Difference]: With dead ends: 28 [2024-11-06 23:50:00,274 INFO L226 Difference]: Without dead ends: 24 [2024-11-06 23:50:00,274 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 53 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2024-11-06 23:50:00,275 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 16 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 23:50:00,275 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 51 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 23:50:00,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-06 23:50:00,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-11-06 23:50:00,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.0625) internal successors, (17), 17 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-06 23:50:00,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2024-11-06 23:50:00,278 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 28 [2024-11-06 23:50:00,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:50:00,279 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2024-11-06 23:50:00,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.25) internal successors, (27), 14 states have internal predecessors, (27), 7 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (11), 4 states have call predecessors, (11), 7 states have call successors, (11) [2024-11-06 23:50:00,279 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2024-11-06 23:50:00,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-06 23:50:00,279 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:50:00,279 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:50:00,297 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-06 23:50:00,483 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 23:50:00,484 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:50:00,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:50:00,484 INFO L85 PathProgramCache]: Analyzing trace with hash 371264716, now seen corresponding path program 4 times [2024-11-06 23:50:00,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:50:00,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681312793] [2024-11-06 23:50:00,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:50:00,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:50:00,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:00,534 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:00,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:00,578 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:00,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:00,618 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:00,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:00,644 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:00,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:00,668 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:00,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:00,688 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-06 23:50:00,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:50:00,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681312793] [2024-11-06 23:50:00,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681312793] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 23:50:00,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743257963] [2024-11-06 23:50:00,689 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-06 23:50:00,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:50:00,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:50:00,692 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 23:50:00,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-06 23:50:00,750 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-06 23:50:00,750 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 23:50:00,751 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-06 23:50:00,752 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:50:00,797 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-06 23:50:00,797 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:50:01,445 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-06 23:50:01,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743257963] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 23:50:01,445 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 23:50:01,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 13] total 16 [2024-11-06 23:50:01,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123458535] [2024-11-06 23:50:01,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 23:50:01,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-06 23:50:01,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:50:01,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-06 23:50:01,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-06 23:50:01,446 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 16 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 16 states have internal predecessors, (31), 8 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (14), 5 states have call predecessors, (14), 8 states have call successors, (14) [2024-11-06 23:50:01,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:50:01,525 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2024-11-06 23:50:01,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-06 23:50:01,526 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 16 states have internal predecessors, (31), 8 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (14), 5 states have call predecessors, (14), 8 states have call successors, (14) Word has length 34 [2024-11-06 23:50:01,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:50:01,526 INFO L225 Difference]: With dead ends: 31 [2024-11-06 23:50:01,526 INFO L226 Difference]: Without dead ends: 27 [2024-11-06 23:50:01,527 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 65 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2024-11-06 23:50:01,527 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 41 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 23:50:01,527 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 60 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 23:50:01,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-06 23:50:01,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-06 23:50:01,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 19 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (7), 6 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-06 23:50:01,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2024-11-06 23:50:01,533 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 34 [2024-11-06 23:50:01,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:50:01,534 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2024-11-06 23:50:01,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 16 states have internal predecessors, (31), 8 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (14), 5 states have call predecessors, (14), 8 states have call successors, (14) [2024-11-06 23:50:01,534 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2024-11-06 23:50:01,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-06 23:50:01,535 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:50:01,535 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:50:01,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-06 23:50:01,735 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 23:50:01,735 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:50:01,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:50:01,736 INFO L85 PathProgramCache]: Analyzing trace with hash -886339242, now seen corresponding path program 5 times [2024-11-06 23:50:01,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:50:01,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076874030] [2024-11-06 23:50:01,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:50:01,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:50:01,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:01,794 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:01,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:01,861 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:01,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:01,910 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:01,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:01,938 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:01,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:01,971 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:01,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:01,992 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:01,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:02,012 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-06 23:50:02,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:50:02,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076874030] [2024-11-06 23:50:02,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076874030] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 23:50:02,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452728652] [2024-11-06 23:50:02,013 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-06 23:50:02,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:50:02,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:50:02,015 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 23:50:02,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-06 23:50:02,067 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-06 23:50:02,067 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 23:50:02,068 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-06 23:50:02,070 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:50:02,118 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-06 23:50:02,118 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:50:03,064 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-06 23:50:03,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452728652] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 23:50:03,064 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 23:50:03,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 15] total 18 [2024-11-06 23:50:03,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115861161] [2024-11-06 23:50:03,064 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 23:50:03,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-06 23:50:03,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:50:03,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-06 23:50:03,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2024-11-06 23:50:03,067 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 18 states, 16 states have (on average 2.1875) internal successors, (35), 18 states have internal predecessors, (35), 9 states have call successors, (9), 1 states have call predecessors, (9), 6 states have return successors, (17), 6 states have call predecessors, (17), 9 states have call successors, (17) [2024-11-06 23:50:03,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:50:03,159 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2024-11-06 23:50:03,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-06 23:50:03,160 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.1875) internal successors, (35), 18 states have internal predecessors, (35), 9 states have call successors, (9), 1 states have call predecessors, (9), 6 states have return successors, (17), 6 states have call predecessors, (17), 9 states have call successors, (17) Word has length 40 [2024-11-06 23:50:03,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:50:03,160 INFO L225 Difference]: With dead ends: 34 [2024-11-06 23:50:03,160 INFO L226 Difference]: Without dead ends: 30 [2024-11-06 23:50:03,161 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 77 SyntacticMatches, 6 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506 [2024-11-06 23:50:03,161 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 13 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 23:50:03,161 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 82 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 23:50:03,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-06 23:50:03,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-11-06 23:50:03,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.05) internal successors, (21), 21 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (8), 7 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-06 23:50:03,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2024-11-06 23:50:03,166 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 40 [2024-11-06 23:50:03,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:50:03,166 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2024-11-06 23:50:03,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.1875) internal successors, (35), 18 states have internal predecessors, (35), 9 states have call successors, (9), 1 states have call predecessors, (9), 6 states have return successors, (17), 6 states have call predecessors, (17), 9 states have call successors, (17) [2024-11-06 23:50:03,166 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2024-11-06 23:50:03,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-06 23:50:03,167 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:50:03,167 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:50:03,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-06 23:50:03,367 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 23:50:03,368 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:50:03,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:50:03,368 INFO L85 PathProgramCache]: Analyzing trace with hash -918712436, now seen corresponding path program 6 times [2024-11-06 23:50:03,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:50:03,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474557396] [2024-11-06 23:50:03,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:50:03,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:50:03,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:03,430 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:03,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:03,494 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:03,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:03,529 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:03,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:03,573 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:03,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:03,599 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:03,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:03,625 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:03,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:03,640 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:03,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:03,653 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-06 23:50:03,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:50:03,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474557396] [2024-11-06 23:50:03,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474557396] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 23:50:03,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596703969] [2024-11-06 23:50:03,653 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-06 23:50:03,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:50:03,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:50:03,655 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 23:50:03,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-06 23:50:03,714 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-06 23:50:03,714 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 23:50:03,714 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-06 23:50:03,716 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:50:03,770 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-06 23:50:03,770 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:50:05,002 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-06 23:50:05,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596703969] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 23:50:05,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 23:50:05,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 17] total 20 [2024-11-06 23:50:05,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573412837] [2024-11-06 23:50:05,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 23:50:05,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-06 23:50:05,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:50:05,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-06 23:50:05,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2024-11-06 23:50:05,003 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 20 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 20 states have internal predecessors, (39), 10 states have call successors, (10), 1 states have call predecessors, (10), 7 states have return successors, (20), 7 states have call predecessors, (20), 10 states have call successors, (20) [2024-11-06 23:50:05,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:50:05,083 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2024-11-06 23:50:05,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-06 23:50:05,084 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 20 states have internal predecessors, (39), 10 states have call successors, (10), 1 states have call predecessors, (10), 7 states have return successors, (20), 7 states have call predecessors, (20), 10 states have call successors, (20) Word has length 46 [2024-11-06 23:50:05,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:50:05,084 INFO L225 Difference]: With dead ends: 37 [2024-11-06 23:50:05,084 INFO L226 Difference]: Without dead ends: 33 [2024-11-06 23:50:05,085 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 89 SyntacticMatches, 7 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=204, Invalid=446, Unknown=0, NotChecked=0, Total=650 [2024-11-06 23:50:05,085 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 28 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 23:50:05,085 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 69 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 23:50:05,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-06 23:50:05,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-11-06 23:50:05,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 23 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 8 states have return successors, (9), 8 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-06 23:50:05,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2024-11-06 23:50:05,089 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 46 [2024-11-06 23:50:05,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:50:05,089 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2024-11-06 23:50:05,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 20 states have internal predecessors, (39), 10 states have call successors, (10), 1 states have call predecessors, (10), 7 states have return successors, (20), 7 states have call predecessors, (20), 10 states have call successors, (20) [2024-11-06 23:50:05,089 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2024-11-06 23:50:05,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-06 23:50:05,090 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:50:05,090 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:50:05,105 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-06 23:50:05,291 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 23:50:05,291 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:50:05,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:50:05,291 INFO L85 PathProgramCache]: Analyzing trace with hash -626238314, now seen corresponding path program 7 times [2024-11-06 23:50:05,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:50:05,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318116378] [2024-11-06 23:50:05,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:50:05,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:50:05,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:05,351 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:05,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:05,420 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:05,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:05,461 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:05,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:05,496 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:05,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:05,526 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:05,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:05,555 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:05,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:05,574 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:05,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:05,589 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:05,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:05,602 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-11-06 23:50:05,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:50:05,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318116378] [2024-11-06 23:50:05,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318116378] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 23:50:05,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286473297] [2024-11-06 23:50:05,603 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-06 23:50:05,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:50:05,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:50:05,605 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 23:50:05,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-06 23:50:05,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:05,679 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-06 23:50:05,680 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:50:05,733 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-11-06 23:50:05,734 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:50:07,331 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-06 23:50:07,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286473297] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 23:50:07,331 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 23:50:07,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 19] total 22 [2024-11-06 23:50:07,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713082248] [2024-11-06 23:50:07,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 23:50:07,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-06 23:50:07,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:50:07,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-06 23:50:07,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2024-11-06 23:50:07,333 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 22 states, 20 states have (on average 2.15) internal successors, (43), 22 states have internal predecessors, (43), 11 states have call successors, (11), 1 states have call predecessors, (11), 8 states have return successors, (23), 8 states have call predecessors, (23), 11 states have call successors, (23) [2024-11-06 23:50:07,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:50:07,422 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2024-11-06 23:50:07,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-06 23:50:07,423 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 2.15) internal successors, (43), 22 states have internal predecessors, (43), 11 states have call successors, (11), 1 states have call predecessors, (11), 8 states have return successors, (23), 8 states have call predecessors, (23), 11 states have call successors, (23) Word has length 52 [2024-11-06 23:50:07,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:50:07,424 INFO L225 Difference]: With dead ends: 40 [2024-11-06 23:50:07,424 INFO L226 Difference]: Without dead ends: 36 [2024-11-06 23:50:07,424 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 101 SyntacticMatches, 8 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=256, Invalid=556, Unknown=0, NotChecked=0, Total=812 [2024-11-06 23:50:07,424 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 17 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 23:50:07,425 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 82 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 23:50:07,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-06 23:50:07,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-11-06 23:50:07,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 25 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (10), 9 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-06 23:50:07,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2024-11-06 23:50:07,429 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 52 [2024-11-06 23:50:07,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:50:07,429 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2024-11-06 23:50:07,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 2.15) internal successors, (43), 22 states have internal predecessors, (43), 11 states have call successors, (11), 1 states have call predecessors, (11), 8 states have return successors, (23), 8 states have call predecessors, (23), 11 states have call successors, (23) [2024-11-06 23:50:07,430 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2024-11-06 23:50:07,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-06 23:50:07,430 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:50:07,430 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:50:07,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-06 23:50:07,634 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 23:50:07,634 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:50:07,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:50:07,635 INFO L85 PathProgramCache]: Analyzing trace with hash -960511412, now seen corresponding path program 8 times [2024-11-06 23:50:07,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:50:07,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811065915] [2024-11-06 23:50:07,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:50:07,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:50:07,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:07,681 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:07,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:07,743 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:07,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:07,786 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:07,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:07,820 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:07,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:07,865 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:07,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:07,889 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:07,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:07,908 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:07,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:07,928 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:07,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:07,942 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:07,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:07,956 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-06 23:50:07,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:50:07,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811065915] [2024-11-06 23:50:07,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811065915] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 23:50:07,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170277788] [2024-11-06 23:50:07,957 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 23:50:07,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:50:07,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:50:07,959 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 23:50:07,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-06 23:50:08,049 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 23:50:08,049 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 23:50:08,050 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-06 23:50:08,051 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:50:08,114 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-06 23:50:08,114 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:50:10,213 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-06 23:50:10,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170277788] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 23:50:10,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 23:50:10,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 21] total 24 [2024-11-06 23:50:10,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862136198] [2024-11-06 23:50:10,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 23:50:10,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-06 23:50:10,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:50:10,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-06 23:50:10,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2024-11-06 23:50:10,215 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand has 24 states, 22 states have (on average 2.1363636363636362) internal successors, (47), 24 states have internal predecessors, (47), 12 states have call successors, (12), 1 states have call predecessors, (12), 9 states have return successors, (26), 9 states have call predecessors, (26), 12 states have call successors, (26) [2024-11-06 23:50:10,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:50:10,309 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2024-11-06 23:50:10,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-06 23:50:10,310 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 2.1363636363636362) internal successors, (47), 24 states have internal predecessors, (47), 12 states have call successors, (12), 1 states have call predecessors, (12), 9 states have return successors, (26), 9 states have call predecessors, (26), 12 states have call successors, (26) Word has length 58 [2024-11-06 23:50:10,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:50:10,310 INFO L225 Difference]: With dead ends: 43 [2024-11-06 23:50:10,310 INFO L226 Difference]: Without dead ends: 39 [2024-11-06 23:50:10,311 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 113 SyntacticMatches, 9 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=314, Invalid=678, Unknown=0, NotChecked=0, Total=992 [2024-11-06 23:50:10,311 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 68 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 23:50:10,311 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 81 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 23:50:10,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-06 23:50:10,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-11-06 23:50:10,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 27 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (11), 10 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-06 23:50:10,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2024-11-06 23:50:10,314 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 58 [2024-11-06 23:50:10,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:50:10,314 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2024-11-06 23:50:10,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 2.1363636363636362) internal successors, (47), 24 states have internal predecessors, (47), 12 states have call successors, (12), 1 states have call predecessors, (12), 9 states have return successors, (26), 9 states have call predecessors, (26), 12 states have call successors, (26) [2024-11-06 23:50:10,314 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2024-11-06 23:50:10,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-06 23:50:10,315 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:50:10,315 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:50:10,327 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 23:50:10,518 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 23:50:10,518 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:50:10,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:50:10,519 INFO L85 PathProgramCache]: Analyzing trace with hash -366706730, now seen corresponding path program 9 times [2024-11-06 23:50:10,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:50:10,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360854313] [2024-11-06 23:50:10,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:50:10,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:50:10,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:10,581 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:10,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:10,642 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:10,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:10,706 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:10,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:10,741 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:10,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:10,771 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:10,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:10,796 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:10,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:10,819 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:10,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:10,840 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:10,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:10,858 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:10,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:10,882 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:10,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:10,896 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-11-06 23:50:10,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:50:10,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360854313] [2024-11-06 23:50:10,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360854313] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 23:50:10,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970018701] [2024-11-06 23:50:10,898 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-06 23:50:10,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:50:10,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:50:10,900 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 23:50:10,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-06 23:50:11,024 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-06 23:50:11,024 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 23:50:11,025 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-06 23:50:11,026 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:50:11,079 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-11-06 23:50:11,079 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:50:13,797 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 207 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-06 23:50:13,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970018701] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 23:50:13,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 23:50:13,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 23] total 26 [2024-11-06 23:50:13,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200139728] [2024-11-06 23:50:13,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 23:50:13,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-06 23:50:13,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:50:13,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-06 23:50:13,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=479, Unknown=0, NotChecked=0, Total=650 [2024-11-06 23:50:13,798 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 26 states, 24 states have (on average 2.125) internal successors, (51), 26 states have internal predecessors, (51), 13 states have call successors, (13), 1 states have call predecessors, (13), 10 states have return successors, (29), 10 states have call predecessors, (29), 13 states have call successors, (29) [2024-11-06 23:50:13,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:50:13,882 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2024-11-06 23:50:13,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-06 23:50:13,883 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 2.125) internal successors, (51), 26 states have internal predecessors, (51), 13 states have call successors, (13), 1 states have call predecessors, (13), 10 states have return successors, (29), 10 states have call predecessors, (29), 13 states have call successors, (29) Word has length 64 [2024-11-06 23:50:13,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:50:13,883 INFO L225 Difference]: With dead ends: 46 [2024-11-06 23:50:13,883 INFO L226 Difference]: Without dead ends: 42 [2024-11-06 23:50:13,884 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 125 SyntacticMatches, 10 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=378, Invalid=812, Unknown=0, NotChecked=0, Total=1190 [2024-11-06 23:50:13,884 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 22 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 23:50:13,884 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 91 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 23:50:13,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-06 23:50:13,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-11-06 23:50:13,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 29 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (12), 11 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-06 23:50:13,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2024-11-06 23:50:13,888 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 64 [2024-11-06 23:50:13,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:50:13,888 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2024-11-06 23:50:13,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 2.125) internal successors, (51), 26 states have internal predecessors, (51), 13 states have call successors, (13), 1 states have call predecessors, (13), 10 states have return successors, (29), 10 states have call predecessors, (29), 13 states have call successors, (29) [2024-11-06 23:50:13,888 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2024-11-06 23:50:13,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-06 23:50:13,888 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:50:13,888 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:50:13,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-06 23:50:14,093 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 23:50:14,093 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:50:14,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:50:14,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1719425780, now seen corresponding path program 10 times [2024-11-06 23:50:14,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:50:14,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920671739] [2024-11-06 23:50:14,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:50:14,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:50:14,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:14,158 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:14,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:14,228 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:14,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:14,295 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:14,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:14,338 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:14,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:14,377 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:14,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:14,416 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:14,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:14,443 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:14,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:14,474 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:14,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:14,494 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:14,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:14,514 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:14,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:14,529 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:14,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:14,545 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2024-11-06 23:50:14,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:50:14,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920671739] [2024-11-06 23:50:14,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920671739] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 23:50:14,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037173572] [2024-11-06 23:50:14,545 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-06 23:50:14,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:50:14,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:50:14,547 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 23:50:14,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-06 23:50:14,707 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-06 23:50:14,707 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 23:50:14,708 INFO L255 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-06 23:50:14,710 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:50:14,782 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2024-11-06 23:50:14,782 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:50:18,167 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-06 23:50:18,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037173572] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 23:50:18,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 23:50:18,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 25] total 28 [2024-11-06 23:50:18,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527319031] [2024-11-06 23:50:18,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 23:50:18,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-06 23:50:18,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:50:18,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-06 23:50:18,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=558, Unknown=0, NotChecked=0, Total=756 [2024-11-06 23:50:18,169 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand has 28 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 28 states have internal predecessors, (55), 14 states have call successors, (14), 1 states have call predecessors, (14), 11 states have return successors, (32), 11 states have call predecessors, (32), 14 states have call successors, (32) [2024-11-06 23:50:18,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:50:18,308 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2024-11-06 23:50:18,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-06 23:50:18,309 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 28 states have internal predecessors, (55), 14 states have call successors, (14), 1 states have call predecessors, (14), 11 states have return successors, (32), 11 states have call predecessors, (32), 14 states have call successors, (32) Word has length 70 [2024-11-06 23:50:18,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:50:18,309 INFO L225 Difference]: With dead ends: 49 [2024-11-06 23:50:18,310 INFO L226 Difference]: Without dead ends: 45 [2024-11-06 23:50:18,310 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 137 SyntacticMatches, 11 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=448, Invalid=958, Unknown=0, NotChecked=0, Total=1406 [2024-11-06 23:50:18,310 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 73 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 23:50:18,311 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 107 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 23:50:18,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-06 23:50:18,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-11-06 23:50:18,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 31 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (13), 12 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-06 23:50:18,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2024-11-06 23:50:18,314 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 70 [2024-11-06 23:50:18,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:50:18,315 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2024-11-06 23:50:18,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 28 states have internal predecessors, (55), 14 states have call successors, (14), 1 states have call predecessors, (14), 11 states have return successors, (32), 11 states have call predecessors, (32), 14 states have call successors, (32) [2024-11-06 23:50:18,317 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2024-11-06 23:50:18,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-06 23:50:18,318 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:50:18,318 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:50:18,344 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-06 23:50:18,519 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 23:50:18,519 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:50:18,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:50:18,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1354232598, now seen corresponding path program 11 times [2024-11-06 23:50:18,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:50:18,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627882433] [2024-11-06 23:50:18,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:50:18,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:50:18,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:18,605 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:18,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:18,689 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:18,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:18,742 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:18,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:18,790 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:18,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:18,845 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:18,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:18,881 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:18,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:18,910 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:18,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:18,935 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:18,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:18,959 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:18,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:18,980 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:18,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:18,998 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:19,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:19,014 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:19,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:19,030 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2024-11-06 23:50:19,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:50:19,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627882433] [2024-11-06 23:50:19,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627882433] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 23:50:19,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83775192] [2024-11-06 23:50:19,031 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-06 23:50:19,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:50:19,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:50:19,032 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 23:50:19,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-06 23:50:19,234 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-11-06 23:50:19,234 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 23:50:19,235 INFO L255 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-06 23:50:19,236 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:50:19,297 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2024-11-06 23:50:19,297 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:50:23,635 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 308 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-06 23:50:23,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83775192] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 23:50:23,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 23:50:23,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 27] total 30 [2024-11-06 23:50:23,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55402780] [2024-11-06 23:50:23,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 23:50:23,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-06 23:50:23,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:50:23,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-06 23:50:23,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=643, Unknown=0, NotChecked=0, Total=870 [2024-11-06 23:50:23,637 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand has 30 states, 28 states have (on average 2.107142857142857) internal successors, (59), 30 states have internal predecessors, (59), 15 states have call successors, (15), 1 states have call predecessors, (15), 12 states have return successors, (35), 12 states have call predecessors, (35), 15 states have call successors, (35) [2024-11-06 23:50:23,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:50:23,762 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2024-11-06 23:50:23,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-06 23:50:23,762 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 28 states have (on average 2.107142857142857) internal successors, (59), 30 states have internal predecessors, (59), 15 states have call successors, (15), 1 states have call predecessors, (15), 12 states have return successors, (35), 12 states have call predecessors, (35), 15 states have call successors, (35) Word has length 76 [2024-11-06 23:50:23,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:50:23,762 INFO L225 Difference]: With dead ends: 52 [2024-11-06 23:50:23,763 INFO L226 Difference]: Without dead ends: 48 [2024-11-06 23:50:23,763 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 149 SyntacticMatches, 12 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 631 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2024-11-06 23:50:23,763 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 63 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 23:50:23,763 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 105 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 23:50:23,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-06 23:50:23,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-11-06 23:50:23,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 32 states have (on average 1.03125) internal successors, (33), 33 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (14), 13 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-06 23:50:23,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2024-11-06 23:50:23,768 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 76 [2024-11-06 23:50:23,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:50:23,768 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2024-11-06 23:50:23,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 28 states have (on average 2.107142857142857) internal successors, (59), 30 states have internal predecessors, (59), 15 states have call successors, (15), 1 states have call predecessors, (15), 12 states have return successors, (35), 12 states have call predecessors, (35), 15 states have call successors, (35) [2024-11-06 23:50:23,768 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2024-11-06 23:50:23,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-06 23:50:23,768 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:50:23,768 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:50:23,784 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 23:50:23,975 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 23:50:23,976 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:50:23,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:50:23,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1734686668, now seen corresponding path program 12 times [2024-11-06 23:50:23,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:50:23,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842834816] [2024-11-06 23:50:23,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:50:23,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:50:23,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:24,044 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:24,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:24,116 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:24,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:24,165 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:24,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:24,211 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:24,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:24,257 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:24,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:24,293 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:24,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:24,335 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:24,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:24,366 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:24,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:24,392 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:24,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:24,418 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:24,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:24,442 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:24,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:24,461 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:24,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:24,477 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:24,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:24,496 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2024-11-06 23:50:24,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:50:24,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842834816] [2024-11-06 23:50:24,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842834816] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 23:50:24,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928324776] [2024-11-06 23:50:24,496 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-06 23:50:24,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:50:24,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:50:24,498 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 23:50:24,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-06 23:50:24,784 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-11-06 23:50:24,784 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 23:50:24,785 INFO L255 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-06 23:50:24,786 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:50:24,858 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2024-11-06 23:50:24,858 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:50:30,460 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 366 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-06 23:50:30,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928324776] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 23:50:30,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 23:50:30,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 29] total 32 [2024-11-06 23:50:30,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498253106] [2024-11-06 23:50:30,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 23:50:30,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-06 23:50:30,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:50:30,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-06 23:50:30,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=734, Unknown=0, NotChecked=0, Total=992 [2024-11-06 23:50:30,466 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand has 32 states, 30 states have (on average 2.1) internal successors, (63), 32 states have internal predecessors, (63), 16 states have call successors, (16), 1 states have call predecessors, (16), 13 states have return successors, (38), 13 states have call predecessors, (38), 16 states have call successors, (38) [2024-11-06 23:50:30,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:50:30,601 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2024-11-06 23:50:30,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-06 23:50:30,602 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 2.1) internal successors, (63), 32 states have internal predecessors, (63), 16 states have call successors, (16), 1 states have call predecessors, (16), 13 states have return successors, (38), 13 states have call predecessors, (38), 16 states have call successors, (38) Word has length 82 [2024-11-06 23:50:30,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:50:30,602 INFO L225 Difference]: With dead ends: 55 [2024-11-06 23:50:30,602 INFO L226 Difference]: Without dead ends: 51 [2024-11-06 23:50:30,603 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 161 SyntacticMatches, 13 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 742 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=606, Invalid=1286, Unknown=0, NotChecked=0, Total=1892 [2024-11-06 23:50:30,603 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 95 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 23:50:30,603 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 104 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 23:50:30,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-06 23:50:30,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-11-06 23:50:30,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 34 states have (on average 1.0294117647058822) internal successors, (35), 35 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 14 states have return successors, (15), 14 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-06 23:50:30,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2024-11-06 23:50:30,606 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 82 [2024-11-06 23:50:30,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:50:30,606 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2024-11-06 23:50:30,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 2.1) internal successors, (63), 32 states have internal predecessors, (63), 16 states have call successors, (16), 1 states have call predecessors, (16), 13 states have return successors, (38), 13 states have call predecessors, (38), 16 states have call successors, (38) [2024-11-06 23:50:30,607 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2024-11-06 23:50:30,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-06 23:50:30,607 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:50:30,607 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:50:30,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-06 23:50:30,807 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 23:50:30,808 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:50:30,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:50:30,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1433749930, now seen corresponding path program 13 times [2024-11-06 23:50:30,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:50:30,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338382146] [2024-11-06 23:50:30,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:50:30,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:50:30,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:30,891 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:30,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:30,959 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:30,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:31,013 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:31,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:31,074 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:31,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:31,118 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:31,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:31,157 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:31,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:31,191 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:31,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:31,229 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:31,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:31,256 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:31,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:31,283 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:31,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:31,304 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:31,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:31,343 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:31,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:31,360 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:31,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:31,376 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:31,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:31,394 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-11-06 23:50:31,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:50:31,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338382146] [2024-11-06 23:50:31,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338382146] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 23:50:31,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216853478] [2024-11-06 23:50:31,395 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-06 23:50:31,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:50:31,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:50:31,398 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 23:50:31,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-06 23:50:31,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:31,770 INFO L255 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-06 23:50:31,772 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:50:31,847 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-11-06 23:50:31,847 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:50:38,891 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-11-06 23:50:38,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216853478] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 23:50:38,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 23:50:38,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 31] total 34 [2024-11-06 23:50:38,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883854115] [2024-11-06 23:50:38,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 23:50:38,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-06 23:50:38,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:50:38,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-06 23:50:38,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=831, Unknown=0, NotChecked=0, Total=1122 [2024-11-06 23:50:38,893 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand has 34 states, 32 states have (on average 2.09375) internal successors, (67), 34 states have internal predecessors, (67), 17 states have call successors, (17), 1 states have call predecessors, (17), 14 states have return successors, (41), 14 states have call predecessors, (41), 17 states have call successors, (41) [2024-11-06 23:50:39,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:50:39,030 INFO L93 Difference]: Finished difference Result 58 states and 59 transitions. [2024-11-06 23:50:39,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-06 23:50:39,030 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 32 states have (on average 2.09375) internal successors, (67), 34 states have internal predecessors, (67), 17 states have call successors, (17), 1 states have call predecessors, (17), 14 states have return successors, (41), 14 states have call predecessors, (41), 17 states have call successors, (41) Word has length 88 [2024-11-06 23:50:39,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:50:39,031 INFO L225 Difference]: With dead ends: 58 [2024-11-06 23:50:39,031 INFO L226 Difference]: Without dead ends: 54 [2024-11-06 23:50:39,032 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 173 SyntacticMatches, 14 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 862 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=694, Invalid=1468, Unknown=0, NotChecked=0, Total=2162 [2024-11-06 23:50:39,032 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 165 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 23:50:39,032 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 114 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 23:50:39,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-06 23:50:39,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-11-06 23:50:39,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 36 states have (on average 1.0277777777777777) internal successors, (37), 37 states have internal predecessors, (37), 2 states have call successors, (2), 1 states have call predecessors, (2), 15 states have return successors, (16), 15 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-06 23:50:39,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2024-11-06 23:50:39,035 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 88 [2024-11-06 23:50:39,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:50:39,036 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2024-11-06 23:50:39,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 32 states have (on average 2.09375) internal successors, (67), 34 states have internal predecessors, (67), 17 states have call successors, (17), 1 states have call predecessors, (17), 14 states have return successors, (41), 14 states have call predecessors, (41), 17 states have call successors, (41) [2024-11-06 23:50:39,036 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2024-11-06 23:50:39,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-06 23:50:39,036 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:50:39,036 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:50:39,053 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-06 23:50:39,240 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 23:50:39,240 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:50:39,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:50:39,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1321174388, now seen corresponding path program 14 times [2024-11-06 23:50:39,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:50:39,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326709705] [2024-11-06 23:50:39,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:50:39,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:50:39,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:39,321 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:39,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:39,399 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:39,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:39,461 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:39,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:39,530 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:39,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:39,578 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:39,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:39,626 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:39,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:39,666 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:39,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:39,704 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:39,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:39,740 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:39,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:39,772 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:39,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:39,799 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:39,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:39,834 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:39,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:39,850 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:39,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:39,867 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:39,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:39,883 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:39,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:39,898 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2024-11-06 23:50:39,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:50:39,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326709705] [2024-11-06 23:50:39,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326709705] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 23:50:39,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990677254] [2024-11-06 23:50:39,899 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 23:50:39,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:50:39,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:50:39,901 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 23:50:39,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-06 23:50:40,294 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 23:50:40,294 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 23:50:40,296 INFO L255 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-06 23:50:40,297 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:50:40,373 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2024-11-06 23:50:40,373 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:50:49,141 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 497 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-06 23:50:49,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990677254] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 23:50:49,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 23:50:49,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 33] total 36 [2024-11-06 23:50:49,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495906608] [2024-11-06 23:50:49,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 23:50:49,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-06 23:50:49,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:50:49,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-06 23:50:49,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=326, Invalid=934, Unknown=0, NotChecked=0, Total=1260 [2024-11-06 23:50:49,143 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand has 36 states, 34 states have (on average 2.088235294117647) internal successors, (71), 36 states have internal predecessors, (71), 18 states have call successors, (18), 1 states have call predecessors, (18), 15 states have return successors, (44), 15 states have call predecessors, (44), 18 states have call successors, (44) [2024-11-06 23:50:49,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:50:49,319 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2024-11-06 23:50:49,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-06 23:50:49,319 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 34 states have (on average 2.088235294117647) internal successors, (71), 36 states have internal predecessors, (71), 18 states have call successors, (18), 1 states have call predecessors, (18), 15 states have return successors, (44), 15 states have call predecessors, (44), 18 states have call successors, (44) Word has length 94 [2024-11-06 23:50:49,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:50:49,320 INFO L225 Difference]: With dead ends: 61 [2024-11-06 23:50:49,320 INFO L226 Difference]: Without dead ends: 57 [2024-11-06 23:50:49,320 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 185 SyntacticMatches, 15 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=788, Invalid=1662, Unknown=0, NotChecked=0, Total=2450 [2024-11-06 23:50:49,321 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 175 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 23:50:49,321 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 116 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 23:50:49,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-06 23:50:49,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2024-11-06 23:50:49,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 38 states have (on average 1.0263157894736843) internal successors, (39), 39 states have internal predecessors, (39), 2 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (17), 16 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-06 23:50:49,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2024-11-06 23:50:49,324 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 94 [2024-11-06 23:50:49,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:50:49,325 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2024-11-06 23:50:49,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 34 states have (on average 2.088235294117647) internal successors, (71), 36 states have internal predecessors, (71), 18 states have call successors, (18), 1 states have call predecessors, (18), 15 states have return successors, (44), 15 states have call predecessors, (44), 18 states have call successors, (44) [2024-11-06 23:50:49,325 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2024-11-06 23:50:49,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-06 23:50:49,325 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:50:49,325 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:50:49,341 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-06 23:50:49,526 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 23:50:49,526 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:50:49,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:50:49,526 INFO L85 PathProgramCache]: Analyzing trace with hash 415287702, now seen corresponding path program 15 times [2024-11-06 23:50:49,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:50:49,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331419310] [2024-11-06 23:50:49,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:50:49,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:50:49,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:49,614 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:49,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:49,736 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:49,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:49,819 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:49,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:49,877 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:49,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:49,931 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:49,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:49,995 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:49,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:50,039 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:50,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:50,077 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:50,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:50,113 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:50,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:50,148 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:50,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:50,176 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:50,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:50,201 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:50,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:50,224 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:50,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:50,244 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:50,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:50,263 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:50,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:50,280 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:50:50,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:50:50,295 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2024-11-06 23:50:50,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:50:50,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331419310] [2024-11-06 23:50:50,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331419310] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 23:50:50,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450058740] [2024-11-06 23:50:50,296 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-06 23:50:50,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:50:50,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:50:50,297 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 23:50:50,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-06 23:50:50,801 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2024-11-06 23:50:50,801 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 23:50:50,802 INFO L255 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-06 23:50:50,803 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:50:50,885 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2024-11-06 23:50:50,886 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:51:01,511 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 570 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-06 23:51:01,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450058740] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 23:51:01,511 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 23:51:01,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 35] total 38 [2024-11-06 23:51:01,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668860680] [2024-11-06 23:51:01,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 23:51:01,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-06 23:51:01,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:51:01,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-06 23:51:01,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=363, Invalid=1043, Unknown=0, NotChecked=0, Total=1406 [2024-11-06 23:51:01,513 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand has 38 states, 36 states have (on average 2.0833333333333335) internal successors, (75), 38 states have internal predecessors, (75), 19 states have call successors, (19), 1 states have call predecessors, (19), 16 states have return successors, (47), 16 states have call predecessors, (47), 19 states have call successors, (47) [2024-11-06 23:51:01,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:51:01,680 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions. [2024-11-06 23:51:01,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-06 23:51:01,680 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 36 states have (on average 2.0833333333333335) internal successors, (75), 38 states have internal predecessors, (75), 19 states have call successors, (19), 1 states have call predecessors, (19), 16 states have return successors, (47), 16 states have call predecessors, (47), 19 states have call successors, (47) Word has length 100 [2024-11-06 23:51:01,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:51:01,681 INFO L225 Difference]: With dead ends: 64 [2024-11-06 23:51:01,681 INFO L226 Difference]: Without dead ends: 60 [2024-11-06 23:51:01,682 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 197 SyntacticMatches, 16 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1129 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=888, Invalid=1868, Unknown=0, NotChecked=0, Total=2756 [2024-11-06 23:51:01,682 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 66 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 23:51:01,683 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 134 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 23:51:01,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-06 23:51:01,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-11-06 23:51:01,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 40 states have (on average 1.025) internal successors, (41), 41 states have internal predecessors, (41), 2 states have call successors, (2), 1 states have call predecessors, (2), 17 states have return successors, (18), 17 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-06 23:51:01,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2024-11-06 23:51:01,686 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 100 [2024-11-06 23:51:01,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:51:01,687 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2024-11-06 23:51:01,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 36 states have (on average 2.0833333333333335) internal successors, (75), 38 states have internal predecessors, (75), 19 states have call successors, (19), 1 states have call predecessors, (19), 16 states have return successors, (47), 16 states have call predecessors, (47), 19 states have call successors, (47) [2024-11-06 23:51:01,687 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2024-11-06 23:51:01,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-06 23:51:01,688 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:51:01,688 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:51:01,703 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-06 23:51:01,892 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 23:51:01,892 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:51:01,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:51:01,893 INFO L85 PathProgramCache]: Analyzing trace with hash 317812044, now seen corresponding path program 16 times [2024-11-06 23:51:01,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:51:01,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417304298] [2024-11-06 23:51:01,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:51:01,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:51:01,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:51:01,981 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:51:01,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:51:02,065 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:51:02,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:51:02,157 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:51:02,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:51:02,227 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:51:02,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:51:02,286 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:51:02,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:51:02,342 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:51:02,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:51:02,404 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:51:02,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:51:02,446 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:51:02,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:51:02,490 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:51:02,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:51:02,524 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:51:02,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:51:02,561 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:51:02,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:51:02,588 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:51:02,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:51:02,615 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:51:02,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:51:02,635 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:51:02,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:51:02,654 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:51:02,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:51:02,670 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:51:02,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:51:02,687 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:51:02,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:51:02,702 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2024-11-06 23:51:02,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:51:02,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417304298] [2024-11-06 23:51:02,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417304298] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 23:51:02,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636478173] [2024-11-06 23:51:02,702 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-06 23:51:02,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:51:02,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:51:02,705 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 23:51:02,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-06 23:51:03,325 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-06 23:51:03,325 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 23:51:03,326 INFO L255 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-06 23:51:03,328 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:51:03,415 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2024-11-06 23:51:03,415 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:51:16,546 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 648 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-11-06 23:51:16,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636478173] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 23:51:16,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 23:51:16,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 37] total 40 [2024-11-06 23:51:16,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168745542] [2024-11-06 23:51:16,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 23:51:16,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-06 23:51:16,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:51:16,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-06 23:51:16,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=402, Invalid=1158, Unknown=0, NotChecked=0, Total=1560 [2024-11-06 23:51:16,547 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand has 40 states, 38 states have (on average 2.0789473684210527) internal successors, (79), 40 states have internal predecessors, (79), 20 states have call successors, (20), 1 states have call predecessors, (20), 17 states have return successors, (50), 17 states have call predecessors, (50), 20 states have call successors, (50) [2024-11-06 23:51:16,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:51:16,728 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2024-11-06 23:51:16,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-06 23:51:16,729 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 38 states have (on average 2.0789473684210527) internal successors, (79), 40 states have internal predecessors, (79), 20 states have call successors, (20), 1 states have call predecessors, (20), 17 states have return successors, (50), 17 states have call predecessors, (50), 20 states have call successors, (50) Word has length 106 [2024-11-06 23:51:16,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:51:16,729 INFO L225 Difference]: With dead ends: 67 [2024-11-06 23:51:16,729 INFO L226 Difference]: Without dead ends: 63 [2024-11-06 23:51:16,730 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 209 SyntacticMatches, 17 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1276 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=994, Invalid=2086, Unknown=0, NotChecked=0, Total=3080 [2024-11-06 23:51:16,730 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 47 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 23:51:16,731 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 128 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 23:51:16,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-06 23:51:16,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-11-06 23:51:16,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 42 states have (on average 1.0238095238095237) internal successors, (43), 43 states have internal predecessors, (43), 2 states have call successors, (2), 1 states have call predecessors, (2), 18 states have return successors, (19), 18 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-06 23:51:16,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2024-11-06 23:51:16,734 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 106 [2024-11-06 23:51:16,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:51:16,734 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2024-11-06 23:51:16,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 38 states have (on average 2.0789473684210527) internal successors, (79), 40 states have internal predecessors, (79), 20 states have call successors, (20), 1 states have call predecessors, (20), 17 states have return successors, (50), 17 states have call predecessors, (50), 20 states have call successors, (50) [2024-11-06 23:51:16,735 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2024-11-06 23:51:16,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-06 23:51:16,735 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:51:16,735 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:51:16,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-06 23:51:16,935 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 23:51:16,936 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:51:16,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:51:16,936 INFO L85 PathProgramCache]: Analyzing trace with hash -2122437418, now seen corresponding path program 17 times [2024-11-06 23:51:16,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:51:16,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299490093] [2024-11-06 23:51:16,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:51:16,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:51:16,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:51:17,031 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:51:17,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:51:17,120 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:51:17,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:51:17,218 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:51:17,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:51:17,287 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:51:17,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:51:17,349 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:51:17,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:51:17,416 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:51:17,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:51:17,470 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:51:17,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:51:17,518 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:51:17,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:51:17,559 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:51:17,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:51:17,594 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:51:17,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:51:17,626 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:51:17,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:51:17,656 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:51:17,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:51:17,685 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:51:17,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:51:17,708 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:51:17,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:51:17,732 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:51:17,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:51:17,766 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:51:17,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:51:17,782 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:51:17,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:51:17,796 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:51:17,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:51:17,810 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2024-11-06 23:51:17,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:51:17,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299490093] [2024-11-06 23:51:17,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299490093] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 23:51:17,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659084229] [2024-11-06 23:51:17,811 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-06 23:51:17,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:51:17,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:51:17,812 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 23:51:17,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-06 23:51:18,588 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2024-11-06 23:51:18,588 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 23:51:18,590 INFO L255 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-06 23:51:18,591 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:51:18,669 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2024-11-06 23:51:18,669 INFO L311 TraceCheckSpWp]: Computing backward predicates...