./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound2.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/nla-digbench-scaling/cohencu-ll_valuebound2.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', '942b28ff7c0583b7db8395d2c315e70afc8fe68ba69d39faf867ac75d7628edb'] 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/nla-digbench-scaling/cohencu-ll_valuebound2.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 942b28ff7c0583b7db8395d2c315e70afc8fe68ba69d39faf867ac75d7628edb --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-06 22:49:17,028 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 22:49:17,086 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-06 22:49:17,092 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 22:49:17,093 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 22:49:17,111 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 22:49:17,112 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 22:49:17,112 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 22:49:17,113 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 22:49:17,113 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 22:49:17,114 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 22:49:17,114 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 22:49:17,114 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 22:49:17,114 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 22:49:17,114 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 22:49:17,114 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 22:49:17,115 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 22:49:17,115 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-06 22:49:17,115 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-06 22:49:17,115 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-06 22:49:17,115 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 22:49:17,115 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 22:49:17,115 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 22:49:17,115 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 22:49:17,115 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 22:49:17,115 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-06 22:49:17,116 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 22:49:17,116 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 22:49:17,116 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 22:49:17,116 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 22:49:17,116 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 22:49:17,116 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 22:49:17,116 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 22:49:17,116 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 22:49:17,117 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 22:49:17,117 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 22:49:17,117 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-06 22:49:17,117 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-06 22:49:17,117 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 22:49:17,117 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 22:49:17,117 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 22:49:17,117 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 22:49:17,118 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 -> 942b28ff7c0583b7db8395d2c315e70afc8fe68ba69d39faf867ac75d7628edb [2024-11-06 22:49:17,337 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 22:49:17,346 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 22:49:17,347 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 22:49:17,349 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 22:49:17,350 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 22:49:17,350 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound2.c [2024-11-06 22:49:18,449 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 22:49:18,612 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 22:49:18,614 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound2.c [2024-11-06 22:49:18,619 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c4e118245/2bcac6f5e6854e329358b25dafe20f37/FLAG851d23533 [2024-11-06 22:49:19,008 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c4e118245/2bcac6f5e6854e329358b25dafe20f37 [2024-11-06 22:49:19,010 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 22:49:19,012 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-06 22:49:19,013 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 22:49:19,013 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 22:49:19,015 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 22:49:19,016 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:49:19" (1/1) ... [2024-11-06 22:49:19,016 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e0a22f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:19, skipping insertion in model container [2024-11-06 22:49:19,017 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:49:19" (1/1) ... [2024-11-06 22:49:19,025 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 22:49:19,118 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/nla-digbench-scaling/cohencu-ll_valuebound2.c[588,601] [2024-11-06 22:49:19,133 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 22:49:19,137 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 22:49:19,144 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/nla-digbench-scaling/cohencu-ll_valuebound2.c[588,601] [2024-11-06 22:49:19,153 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 22:49:19,163 INFO L204 MainTranslator]: Completed translation [2024-11-06 22:49:19,163 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:19 WrapperNode [2024-11-06 22:49:19,163 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 22:49:19,164 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 22:49:19,164 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 22:49:19,164 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 22:49:19,168 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:19" (1/1) ... [2024-11-06 22:49:19,172 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:19" (1/1) ... [2024-11-06 22:49:19,185 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 48 [2024-11-06 22:49:19,185 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 22:49:19,186 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 22:49:19,186 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 22:49:19,186 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 22:49:19,193 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:19" (1/1) ... [2024-11-06 22:49:19,193 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:19" (1/1) ... [2024-11-06 22:49:19,197 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:19" (1/1) ... [2024-11-06 22:49:19,209 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 22:49:19,209 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:19" (1/1) ... [2024-11-06 22:49:19,210 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:19" (1/1) ... [2024-11-06 22:49:19,211 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:19" (1/1) ... [2024-11-06 22:49:19,215 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:19" (1/1) ... [2024-11-06 22:49:19,216 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:19" (1/1) ... [2024-11-06 22:49:19,216 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:19" (1/1) ... [2024-11-06 22:49:19,218 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 22:49:19,218 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 22:49:19,222 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 22:49:19,223 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 22:49:19,223 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:19" (1/1) ... [2024-11-06 22:49:19,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 22:49:19,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:49:19,246 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 22:49:19,250 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 22:49:19,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 22:49:19,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-06 22:49:19,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 22:49:19,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 22:49:19,265 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-06 22:49:19,265 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-06 22:49:19,313 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 22:49:19,314 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 22:49:19,411 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-11-06 22:49:19,412 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 22:49:19,418 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 22:49:19,419 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-06 22:49:19,420 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:49:19 BoogieIcfgContainer [2024-11-06 22:49:19,420 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 22:49:19,422 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 22:49:19,422 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 22:49:19,426 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 22:49:19,426 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:49:19" (1/3) ... [2024-11-06 22:49:19,427 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4db7084d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:49:19, skipping insertion in model container [2024-11-06 22:49:19,427 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:19" (2/3) ... [2024-11-06 22:49:19,427 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4db7084d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:49:19, skipping insertion in model container [2024-11-06 22:49:19,428 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:49:19" (3/3) ... [2024-11-06 22:49:19,428 INFO L112 eAbstractionObserver]: Analyzing ICFG cohencu-ll_valuebound2.c [2024-11-06 22:49:19,439 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 22:49:19,440 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-06 22:49:19,477 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 22:49:19,484 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;@300616ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 22:49:19,485 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-06 22:49:19,487 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-06 22:49:19,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-06 22:49:19,492 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:49:19,492 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:49:19,492 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:49:19,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:49:19,496 INFO L85 PathProgramCache]: Analyzing trace with hash -588951690, now seen corresponding path program 1 times [2024-11-06 22:49:19,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:49:19,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100272676] [2024-11-06 22:49:19,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:49:19,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:49:19,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:49:19,604 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 22:49:19,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:49:19,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100272676] [2024-11-06 22:49:19,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100272676] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 22:49:19,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 22:49:19,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 22:49:19,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811979422] [2024-11-06 22:49:19,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 22:49:19,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-06 22:49:19,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:49:19,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-06 22:49:19,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-06 22:49:19,636 INFO L87 Difference]: Start difference. First operand has 27 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:49:19,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:49:19,651 INFO L93 Difference]: Finished difference Result 51 states and 89 transitions. [2024-11-06 22:49:19,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-06 22:49:19,652 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-06 22:49:19,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:49:19,656 INFO L225 Difference]: With dead ends: 51 [2024-11-06 22:49:19,656 INFO L226 Difference]: Without dead ends: 23 [2024-11-06 22:49:19,659 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-06 22:49:19,663 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 22:49:19,663 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 22:49:19,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-06 22:49:19,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-11-06 22:49:19,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-06 22:49:19,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 33 transitions. [2024-11-06 22:49:19,685 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 33 transitions. Word has length 9 [2024-11-06 22:49:19,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:49:19,685 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 33 transitions. [2024-11-06 22:49:19,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:49:19,686 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 33 transitions. [2024-11-06 22:49:19,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-06 22:49:19,686 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:49:19,686 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:49:19,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-06 22:49:19,687 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:49:19,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:49:19,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1187604804, now seen corresponding path program 1 times [2024-11-06 22:49:19,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:49:19,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816409542] [2024-11-06 22:49:19,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:49:19,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:49:19,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:49:19,860 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 22:49:19,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:49:19,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816409542] [2024-11-06 22:49:19,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816409542] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 22:49:19,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 22:49:19,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-06 22:49:19,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945147451] [2024-11-06 22:49:19,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 22:49:19,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 22:49:19,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:49:19,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 22:49:19,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 22:49:19,861 INFO L87 Difference]: Start difference. First operand 23 states and 33 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:49:19,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:49:19,988 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2024-11-06 22:49:19,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 22:49:19,989 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-06 22:49:19,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:49:19,989 INFO L225 Difference]: With dead ends: 29 [2024-11-06 22:49:19,989 INFO L226 Difference]: Without dead ends: 27 [2024-11-06 22:49:19,990 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-06 22:49:19,990 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 4 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:49:19,990 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 86 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:49:19,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-06 22:49:20,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-06 22:49:20,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-06 22:49:20,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2024-11-06 22:49:20,003 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 9 [2024-11-06 22:49:20,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:49:20,003 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2024-11-06 22:49:20,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:49:20,003 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2024-11-06 22:49:20,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-06 22:49:20,003 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:49:20,004 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:49:20,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-06 22:49:20,004 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:49:20,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:49:20,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1137950087, now seen corresponding path program 1 times [2024-11-06 22:49:20,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:49:20,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62522246] [2024-11-06 22:49:20,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:49:20,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:49:20,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 22:49:20,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [341724804] [2024-11-06 22:49:20,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:49:20,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:49:20,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:49:20,023 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 22:49:20,024 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 22:49:20,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:49:20,071 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-06 22:49:20,074 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:49:20,143 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:49:20,145 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 22:49:20,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:49:20,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62522246] [2024-11-06 22:49:20,145 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 22:49:20,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341724804] [2024-11-06 22:49:20,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341724804] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 22:49:20,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 22:49:20,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-06 22:49:20,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940271211] [2024-11-06 22:49:20,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 22:49:20,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 22:49:20,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:49:20,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 22:49:20,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 22:49:20,147 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-06 22:49:20,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:49:20,230 INFO L93 Difference]: Finished difference Result 46 states and 65 transitions. [2024-11-06 22:49:20,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 22:49:20,231 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2024-11-06 22:49:20,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:49:20,232 INFO L225 Difference]: With dead ends: 46 [2024-11-06 22:49:20,232 INFO L226 Difference]: Without dead ends: 44 [2024-11-06 22:49:20,232 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-06 22:49:20,233 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 4 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:49:20,234 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 107 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:49:20,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-06 22:49:20,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 34. [2024-11-06 22:49:20,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 19 states have internal predecessors, (19), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-06 22:49:20,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 44 transitions. [2024-11-06 22:49:20,248 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 44 transitions. Word has length 14 [2024-11-06 22:49:20,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:49:20,248 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 44 transitions. [2024-11-06 22:49:20,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-06 22:49:20,248 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 44 transitions. [2024-11-06 22:49:20,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-06 22:49:20,249 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:49:20,249 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:49:20,262 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-06 22:49:20,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:49:20,450 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:49:20,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:49:20,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1500531996, now seen corresponding path program 1 times [2024-11-06 22:49:20,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:49:20,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145715191] [2024-11-06 22:49:20,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:49:20,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:49:20,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 22:49:20,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1651054587] [2024-11-06 22:49:20,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:49:20,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:49:20,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:49:20,472 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 22:49:20,474 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 22:49:20,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:49:20,525 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-06 22:49:20,525 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:49:20,598 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 22:49:20,599 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 22:49:20,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:49:20,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145715191] [2024-11-06 22:49:20,599 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 22:49:20,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651054587] [2024-11-06 22:49:20,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651054587] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 22:49:20,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 22:49:20,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-06 22:49:20,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640379448] [2024-11-06 22:49:20,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 22:49:20,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 22:49:20,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:49:20,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 22:49:20,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 22:49:20,601 INFO L87 Difference]: Start difference. First operand 34 states and 44 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-06 22:49:20,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:49:20,664 INFO L93 Difference]: Finished difference Result 50 states and 68 transitions. [2024-11-06 22:49:20,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 22:49:20,665 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2024-11-06 22:49:20,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:49:20,666 INFO L225 Difference]: With dead ends: 50 [2024-11-06 22:49:20,666 INFO L226 Difference]: Without dead ends: 48 [2024-11-06 22:49:20,667 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-06 22:49:20,668 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 4 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 22:49:20,669 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 104 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 22:49:20,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-06 22:49:20,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2024-11-06 22:49:20,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 23 states have internal predecessors, (24), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-06 22:49:20,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 59 transitions. [2024-11-06 22:49:20,683 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 59 transitions. Word has length 19 [2024-11-06 22:49:20,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:49:20,683 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 59 transitions. [2024-11-06 22:49:20,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-06 22:49:20,684 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 59 transitions. [2024-11-06 22:49:20,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-06 22:49:20,684 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:49:20,684 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:49:20,696 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-06 22:49:20,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:49:20,889 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:49:20,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:49:20,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1926539111, now seen corresponding path program 1 times [2024-11-06 22:49:20,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:49:20,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073235009] [2024-11-06 22:49:20,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:49:20,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:49:20,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 22:49:20,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1035982191] [2024-11-06 22:49:20,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:49:20,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:49:20,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:49:20,906 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 22:49:20,907 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 22:49:20,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:49:20,947 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-06 22:49:20,948 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:49:21,005 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-06 22:49:21,006 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 22:49:21,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:49:21,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073235009] [2024-11-06 22:49:21,007 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 22:49:21,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035982191] [2024-11-06 22:49:21,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035982191] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 22:49:21,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 22:49:21,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-06 22:49:21,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315076382] [2024-11-06 22:49:21,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 22:49:21,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 22:49:21,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:49:21,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 22:49:21,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 22:49:21,008 INFO L87 Difference]: Start difference. First operand 44 states and 59 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-06 22:49:21,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:49:21,075 INFO L93 Difference]: Finished difference Result 58 states and 74 transitions. [2024-11-06 22:49:21,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 22:49:21,076 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2024-11-06 22:49:21,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:49:21,077 INFO L225 Difference]: With dead ends: 58 [2024-11-06 22:49:21,077 INFO L226 Difference]: Without dead ends: 46 [2024-11-06 22:49:21,078 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-06 22:49:21,078 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 4 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:49:21,078 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 96 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:49:21,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-06 22:49:21,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-11-06 22:49:21,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 25 states have internal predecessors, (26), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-06 22:49:21,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 57 transitions. [2024-11-06 22:49:21,087 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 57 transitions. Word has length 24 [2024-11-06 22:49:21,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:49:21,087 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 57 transitions. [2024-11-06 22:49:21,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-06 22:49:21,087 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 57 transitions. [2024-11-06 22:49:21,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-06 22:49:21,090 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:49:21,090 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:49:21,102 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 22:49:21,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:49:21,291 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:49:21,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:49:21,291 INFO L85 PathProgramCache]: Analyzing trace with hash -492592860, now seen corresponding path program 1 times [2024-11-06 22:49:21,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:49:21,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514712988] [2024-11-06 22:49:21,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:49:21,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:49:21,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 22:49:21,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [428020130] [2024-11-06 22:49:21,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:49:21,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:49:21,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:49:21,319 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 22:49:21,320 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 22:49:21,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:49:21,358 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-06 22:49:21,359 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:49:21,469 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 11 proven. 19 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-06 22:49:21,470 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:49:21,590 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 13 proven. 17 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-06 22:49:21,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:49:21,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514712988] [2024-11-06 22:49:21,591 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 22:49:21,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428020130] [2024-11-06 22:49:21,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428020130] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:49:21,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 22:49:21,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2024-11-06 22:49:21,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011586268] [2024-11-06 22:49:21,591 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 22:49:21,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-06 22:49:21,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:49:21,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-06 22:49:21,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-11-06 22:49:21,592 INFO L87 Difference]: Start difference. First operand 46 states and 57 transitions. Second operand has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 11 states have internal predecessors, (24), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2024-11-06 22:49:21,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:49:21,778 INFO L93 Difference]: Finished difference Result 69 states and 89 transitions. [2024-11-06 22:49:21,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-06 22:49:21,778 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 11 states have internal predecessors, (24), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) Word has length 41 [2024-11-06 22:49:21,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:49:21,779 INFO L225 Difference]: With dead ends: 69 [2024-11-06 22:49:21,779 INFO L226 Difference]: Without dead ends: 67 [2024-11-06 22:49:21,779 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2024-11-06 22:49:21,780 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 10 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:49:21,780 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 153 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:49:21,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-06 22:49:21,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 54. [2024-11-06 22:49:21,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 31 states have internal predecessors, (32), 16 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-06 22:49:21,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2024-11-06 22:49:21,795 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 41 [2024-11-06 22:49:21,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:49:21,795 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2024-11-06 22:49:21,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 11 states have internal predecessors, (24), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2024-11-06 22:49:21,795 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2024-11-06 22:49:21,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-06 22:49:21,796 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:49:21,796 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:49:21,810 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-06 22:49:22,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-06 22:49:22,003 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:49:22,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:49:22,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1495173479, now seen corresponding path program 2 times [2024-11-06 22:49:22,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:49:22,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821723770] [2024-11-06 22:49:22,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:49:22,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:49:22,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 22:49:22,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1360212285] [2024-11-06 22:49:22,031 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 22:49:22,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:49:22,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:49:22,037 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 22:49:22,038 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 22:49:22,078 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 22:49:22,078 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:49:22,079 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-06 22:49:22,080 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:49:22,175 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-06 22:49:22,175 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:49:22,293 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-06 22:49:22,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:49:22,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821723770] [2024-11-06 22:49:22,294 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 22:49:22,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360212285] [2024-11-06 22:49:22,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360212285] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:49:22,294 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 22:49:22,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2024-11-06 22:49:22,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047645024] [2024-11-06 22:49:22,294 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 22:49:22,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-06 22:49:22,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:49:22,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-06 22:49:22,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-06 22:49:22,296 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 11 states have internal predecessors, (24), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) [2024-11-06 22:49:26,210 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.72s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-06 22:49:26,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:49:26,300 INFO L93 Difference]: Finished difference Result 81 states and 98 transitions. [2024-11-06 22:49:26,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-06 22:49:26,301 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 11 states have internal predecessors, (24), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) Word has length 46 [2024-11-06 22:49:26,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:49:26,302 INFO L225 Difference]: With dead ends: 81 [2024-11-06 22:49:26,302 INFO L226 Difference]: Without dead ends: 79 [2024-11-06 22:49:26,302 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2024-11-06 22:49:26,302 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 10 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-06 22:49:26,303 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 127 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-06 22:49:26,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-06 22:49:26,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2024-11-06 22:49:26,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 41 states have (on average 1.0731707317073171) internal successors, (44), 43 states have internal predecessors, (44), 25 states have call successors, (25), 10 states have call predecessors, (25), 10 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-06 22:49:26,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 93 transitions. [2024-11-06 22:49:26,326 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 93 transitions. Word has length 46 [2024-11-06 22:49:26,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:49:26,326 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 93 transitions. [2024-11-06 22:49:26,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 11 states have internal predecessors, (24), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) [2024-11-06 22:49:26,326 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 93 transitions. [2024-11-06 22:49:26,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-06 22:49:26,327 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:49:26,327 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:49:26,341 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 22:49:26,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:49:26,529 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:49:26,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:49:26,529 INFO L85 PathProgramCache]: Analyzing trace with hash 900098756, now seen corresponding path program 3 times [2024-11-06 22:49:26,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:49:26,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869489128] [2024-11-06 22:49:26,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:49:26,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:49:26,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 22:49:26,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [991747676] [2024-11-06 22:49:26,555 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-06 22:49:26,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:49:26,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:49:26,558 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 22:49:26,559 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 22:49:26,595 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-06 22:49:26,595 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:49:26,596 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-06 22:49:26,597 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:49:26,671 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-06 22:49:26,671 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:49:26,783 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-06 22:49:26,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:49:26,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869489128] [2024-11-06 22:49:26,783 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 22:49:26,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991747676] [2024-11-06 22:49:26,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991747676] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:49:26,783 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 22:49:26,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-11-06 22:49:26,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750374101] [2024-11-06 22:49:26,783 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 22:49:26,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-06 22:49:26,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:49:26,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-06 22:49:26,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-06 22:49:26,784 INFO L87 Difference]: Start difference. First operand 77 states and 93 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 4 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-06 22:49:26,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:49:26,964 INFO L93 Difference]: Finished difference Result 89 states and 104 transitions. [2024-11-06 22:49:26,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-06 22:49:26,964 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 4 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 51 [2024-11-06 22:49:26,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:49:26,965 INFO L225 Difference]: With dead ends: 89 [2024-11-06 22:49:26,965 INFO L226 Difference]: Without dead ends: 77 [2024-11-06 22:49:26,965 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-06 22:49:26,965 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 11 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:49:26,966 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 204 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:49:26,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-06 22:49:26,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 67. [2024-11-06 22:49:26,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 42 states have (on average 1.0476190476190477) internal successors, (44), 43 states have internal predecessors, (44), 13 states have call successors, (13), 11 states have call predecessors, (13), 11 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-06 22:49:26,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 69 transitions. [2024-11-06 22:49:26,977 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 69 transitions. Word has length 51 [2024-11-06 22:49:26,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:49:26,977 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 69 transitions. [2024-11-06 22:49:26,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 4 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-06 22:49:26,977 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 69 transitions. [2024-11-06 22:49:26,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-06 22:49:26,979 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:49:26,979 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:49:26,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-06 22:49:27,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-06 22:49:27,180 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:49:27,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:49:27,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1061977627, now seen corresponding path program 1 times [2024-11-06 22:49:27,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:49:27,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273320130] [2024-11-06 22:49:27,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:49:27,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:49:27,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 22:49:27,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [242983525] [2024-11-06 22:49:27,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:49:27,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:49:27,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:49:27,198 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 22:49:27,200 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 22:49:27,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:49:27,246 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-06 22:49:27,248 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:49:27,374 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-06 22:49:27,374 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:49:27,669 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-06 22:49:27,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:49:27,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273320130] [2024-11-06 22:49:27,669 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 22:49:27,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242983525] [2024-11-06 22:49:27,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242983525] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:49:27,670 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 22:49:27,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2024-11-06 22:49:27,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221678714] [2024-11-06 22:49:27,670 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 22:49:27,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-06 22:49:27,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:49:27,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-06 22:49:27,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-06 22:49:27,671 INFO L87 Difference]: Start difference. First operand 67 states and 69 transitions. Second operand has 10 states, 8 states have (on average 2.375) internal successors, (19), 9 states have internal predecessors, (19), 6 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2024-11-06 22:49:27,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:49:27,954 INFO L93 Difference]: Finished difference Result 97 states and 113 transitions. [2024-11-06 22:49:27,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-06 22:49:27,954 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.375) internal successors, (19), 9 states have internal predecessors, (19), 6 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) Word has length 67 [2024-11-06 22:49:27,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:49:27,955 INFO L225 Difference]: With dead ends: 97 [2024-11-06 22:49:27,955 INFO L226 Difference]: Without dead ends: 95 [2024-11-06 22:49:27,955 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 122 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-11-06 22:49:27,956 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 5 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 22:49:27,956 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 117 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 22:49:27,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-06 22:49:27,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 91. [2024-11-06 22:49:27,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 52 states have (on average 1.0769230769230769) internal successors, (56), 54 states have internal predecessors, (56), 25 states have call successors, (25), 13 states have call predecessors, (25), 13 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-06 22:49:27,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 105 transitions. [2024-11-06 22:49:27,985 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 105 transitions. Word has length 67 [2024-11-06 22:49:27,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:49:27,986 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 105 transitions. [2024-11-06 22:49:27,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.375) internal successors, (19), 9 states have internal predecessors, (19), 6 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2024-11-06 22:49:27,986 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 105 transitions. [2024-11-06 22:49:27,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-06 22:49:27,987 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:49:27,987 INFO L215 NwaCegarLoop]: trace histogram [13, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:49:27,999 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-06 22:49:28,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:49:28,188 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:49:28,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:49:28,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1246911088, now seen corresponding path program 1 times [2024-11-06 22:49:28,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:49:28,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194460354] [2024-11-06 22:49:28,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:49:28,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:49:28,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 22:49:28,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1708096557] [2024-11-06 22:49:28,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:49:28,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:49:28,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:49:28,214 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 22:49:28,215 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 22:49:28,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:49:28,257 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-06 22:49:28,258 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:49:28,467 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-06 22:49:28,467 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:49:28,679 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-06 22:49:28,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:49:28,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194460354] [2024-11-06 22:49:28,679 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 22:49:28,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708096557] [2024-11-06 22:49:28,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708096557] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:49:28,679 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 22:49:28,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14 [2024-11-06 22:49:28,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118699699] [2024-11-06 22:49:28,679 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 22:49:28,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-06 22:49:28,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:49:28,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-06 22:49:28,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-11-06 22:49:28,680 INFO L87 Difference]: Start difference. First operand 91 states and 105 transitions. Second operand has 14 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 6 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) [2024-11-06 22:49:28,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:49:28,969 INFO L93 Difference]: Finished difference Result 109 states and 122 transitions. [2024-11-06 22:49:28,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-06 22:49:28,970 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 6 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) Word has length 72 [2024-11-06 22:49:28,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:49:28,971 INFO L225 Difference]: With dead ends: 109 [2024-11-06 22:49:28,971 INFO L226 Difference]: Without dead ends: 89 [2024-11-06 22:49:28,971 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2024-11-06 22:49:28,971 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 15 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 22:49:28,971 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 173 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 22:49:28,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-06 22:49:28,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2024-11-06 22:49:28,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 52 states have (on average 1.0384615384615385) internal successors, (54), 53 states have internal predecessors, (54), 23 states have call successors, (23), 13 states have call predecessors, (23), 13 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-06 22:49:28,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 99 transitions. [2024-11-06 22:49:28,997 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 99 transitions. Word has length 72 [2024-11-06 22:49:28,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:49:28,997 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 99 transitions. [2024-11-06 22:49:28,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 6 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) [2024-11-06 22:49:28,997 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 99 transitions. [2024-11-06 22:49:28,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-06 22:49:28,998 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:49:28,998 INFO L215 NwaCegarLoop]: trace histogram [22, 21, 21, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:49:29,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-06 22:49:29,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:49:29,202 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:49:29,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:49:29,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1837317061, now seen corresponding path program 2 times [2024-11-06 22:49:29,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:49:29,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302782810] [2024-11-06 22:49:29,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:49:29,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:49:29,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 22:49:29,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [856974092] [2024-11-06 22:49:29,240 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 22:49:29,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:49:29,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:49:29,242 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 22:49:29,243 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 22:49:29,304 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 22:49:29,304 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:49:29,306 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-06 22:49:29,308 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:49:29,555 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 86 proven. 58 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2024-11-06 22:49:29,555 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:49:30,242 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 107 proven. 16 refuted. 0 times theorem prover too weak. 801 trivial. 0 not checked. [2024-11-06 22:49:30,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:49:30,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302782810] [2024-11-06 22:49:30,243 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 22:49:30,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856974092] [2024-11-06 22:49:30,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856974092] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:49:30,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 22:49:30,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 16 [2024-11-06 22:49:30,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722204153] [2024-11-06 22:49:30,244 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 22:49:30,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-06 22:49:30,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:49:30,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-06 22:49:30,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2024-11-06 22:49:30,245 INFO L87 Difference]: Start difference. First operand 89 states and 99 transitions. Second operand has 16 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 9 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (32), 8 states have call predecessors, (32), 9 states have call successors, (32) [2024-11-06 22:49:30,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:49:30,649 INFO L93 Difference]: Finished difference Result 111 states and 128 transitions. [2024-11-06 22:49:30,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-06 22:49:30,650 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 9 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (32), 8 states have call predecessors, (32), 9 states have call successors, (32) Word has length 121 [2024-11-06 22:49:30,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:49:30,651 INFO L225 Difference]: With dead ends: 111 [2024-11-06 22:49:30,651 INFO L226 Difference]: Without dead ends: 107 [2024-11-06 22:49:30,652 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2024-11-06 22:49:30,652 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 10 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-06 22:49:30,652 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 265 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-06 22:49:30,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-11-06 22:49:30,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 103. [2024-11-06 22:49:30,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 59 states have (on average 1.0338983050847457) internal successors, (61), 60 states have internal predecessors, (61), 29 states have call successors, (29), 15 states have call predecessors, (29), 14 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-06 22:49:30,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 118 transitions. [2024-11-06 22:49:30,679 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 118 transitions. Word has length 121 [2024-11-06 22:49:30,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:49:30,680 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 118 transitions. [2024-11-06 22:49:30,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 9 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (32), 8 states have call predecessors, (32), 9 states have call successors, (32) [2024-11-06 22:49:30,681 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 118 transitions. [2024-11-06 22:49:30,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-06 22:49:30,684 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:49:30,684 INFO L215 NwaCegarLoop]: trace histogram [23, 22, 22, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:49:30,696 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 22:49:30,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:49:30,884 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:49:30,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:49:30,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1974193296, now seen corresponding path program 2 times [2024-11-06 22:49:30,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:49:30,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989411532] [2024-11-06 22:49:30,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:49:30,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:49:30,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 22:49:30,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [522420066] [2024-11-06 22:49:30,916 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 22:49:30,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:49:30,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:49:30,921 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 22:49:30,923 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 22:49:30,977 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 22:49:30,977 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:49:30,978 INFO L255 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-06 22:49:30,981 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:49:31,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 44 proven. 42 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-11-06 22:49:31,403 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:49:31,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 44 proven. 42 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-11-06 22:49:31,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:49:31,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989411532] [2024-11-06 22:49:31,722 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 22:49:31,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522420066] [2024-11-06 22:49:31,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522420066] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:49:31,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 22:49:31,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 15 [2024-11-06 22:49:31,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108703254] [2024-11-06 22:49:31,723 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 22:49:31,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-06 22:49:31,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:49:31,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-06 22:49:31,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2024-11-06 22:49:31,724 INFO L87 Difference]: Start difference. First operand 103 states and 118 transitions. Second operand has 15 states, 13 states have (on average 2.230769230769231) internal successors, (29), 14 states have internal predecessors, (29), 10 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (44), 10 states have call predecessors, (44), 10 states have call successors, (44) [2024-11-06 22:49:32,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:49:32,209 INFO L93 Difference]: Finished difference Result 152 states and 190 transitions. [2024-11-06 22:49:32,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-06 22:49:32,210 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 2.230769230769231) internal successors, (29), 14 states have internal predecessors, (29), 10 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (44), 10 states have call predecessors, (44), 10 states have call successors, (44) Word has length 126 [2024-11-06 22:49:32,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:49:32,211 INFO L225 Difference]: With dead ends: 152 [2024-11-06 22:49:32,211 INFO L226 Difference]: Without dead ends: 138 [2024-11-06 22:49:32,211 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 235 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=158, Invalid=442, Unknown=0, NotChecked=0, Total=600 [2024-11-06 22:49:32,212 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 28 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 22:49:32,212 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 262 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 22:49:32,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-11-06 22:49:32,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2024-11-06 22:49:32,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 73 states have (on average 1.0136986301369864) internal successors, (74), 73 states have internal predecessors, (74), 48 states have call successors, (48), 17 states have call predecessors, (48), 16 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-11-06 22:49:32,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 169 transitions. [2024-11-06 22:49:32,262 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 169 transitions. Word has length 126 [2024-11-06 22:49:32,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:49:32,262 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 169 transitions. [2024-11-06 22:49:32,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 2.230769230769231) internal successors, (29), 14 states have internal predecessors, (29), 10 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (44), 10 states have call predecessors, (44), 10 states have call successors, (44) [2024-11-06 22:49:32,262 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 169 transitions. [2024-11-06 22:49:32,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2024-11-06 22:49:32,264 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:49:32,264 INFO L215 NwaCegarLoop]: trace histogram [48, 47, 47, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:49:32,276 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 22:49:32,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-06 22:49:32,469 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:49:32,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:49:32,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1106912589, now seen corresponding path program 3 times [2024-11-06 22:49:32,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:49:32,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205629891] [2024-11-06 22:49:32,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:49:32,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:49:32,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:49:32,904 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-06 22:49:32,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:49:32,909 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-06 22:49:32,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:49:32,913 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-06 22:49:32,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:49:32,917 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-06 22:49:32,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:49:32,920 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-06 22:49:32,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:49:32,923 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-06 22:49:32,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:49:32,924 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-06 22:49:32,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:49:32,928 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-06 22:49:32,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:49:32,931 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-06 22:49:32,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:49:32,933 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-06 22:49:32,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:49:32,937 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-06 22:49:32,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:49:32,939 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-06 22:49:32,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:49:32,941 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-06 22:49:32,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:49:32,943 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-11-06 22:49:32,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:49:32,945 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-11-06 22:49:32,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:49:32,947 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-11-06 22:49:32,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:49:32,949 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-11-06 22:49:32,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:49:32,961 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-11-06 22:49:32,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:49:32,967 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-11-06 22:49:32,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:49:32,970 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-11-06 22:49:32,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:49:32,972 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-11-06 22:49:32,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:49:32,974 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-11-06 22:49:32,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:49:32,976 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-11-06 22:49:32,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:49:32,977 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-11-06 22:49:32,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:49:32,979 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-11-06 22:49:32,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:49:32,981 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-11-06 22:49:32,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:49:32,983 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-11-06 22:49:32,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:49:32,985 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-11-06 22:49:32,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:49:32,987 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-11-06 22:49:32,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:49:32,989 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-11-06 22:49:32,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:49:32,991 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-11-06 22:49:32,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:49:32,993 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-11-06 22:49:32,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:49:32,996 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-11-06 22:49:32,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:49:32,997 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-11-06 22:49:32,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:49:33,001 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-11-06 22:49:33,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:49:33,004 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-11-06 22:49:33,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:49:33,006 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-11-06 22:49:33,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:49:33,008 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-11-06 22:49:33,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:49:33,014 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-11-06 22:49:33,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:49:33,016 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-11-06 22:49:33,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:49:33,018 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-11-06 22:49:33,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:49:33,020 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-11-06 22:49:33,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:49:33,021 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-11-06 22:49:33,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:49:33,022 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2024-11-06 22:49:33,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:49:33,023 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-11-06 22:49:33,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:49:33,024 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-11-06 22:49:33,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:49:33,025 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2024-11-06 22:49:33,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:49:33,027 INFO L134 CoverageAnalysis]: Checked inductivity of 4670 backedges. 297 proven. 49 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-11-06 22:49:33,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:49:33,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205629891] [2024-11-06 22:49:33,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205629891] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:49:33,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839469635] [2024-11-06 22:49:33,027 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-06 22:49:33,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:49:33,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:49:33,029 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 22:49:33,030 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 22:49:33,087 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-06 22:49:33,087 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:49:33,088 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-06 22:49:33,091 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:49:33,436 INFO L134 CoverageAnalysis]: Checked inductivity of 4670 backedges. 520 proven. 33 refuted. 0 times theorem prover too weak. 4117 trivial. 0 not checked. [2024-11-06 22:49:33,436 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:49:34,343 INFO L134 CoverageAnalysis]: Checked inductivity of 4670 backedges. 388 proven. 39 refuted. 0 times theorem prover too weak. 4243 trivial. 0 not checked. [2024-11-06 22:49:34,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839469635] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:49:34,344 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:49:34,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 9] total 28 [2024-11-06 22:49:34,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541767272] [2024-11-06 22:49:34,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:49:34,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-06 22:49:34,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:49:34,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-06 22:49:34,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=642, Unknown=0, NotChecked=0, Total=756 [2024-11-06 22:49:34,347 INFO L87 Difference]: Start difference. First operand 138 states and 169 transitions. Second operand has 28 states, 26 states have (on average 2.0384615384615383) internal successors, (53), 23 states have internal predecessors, (53), 17 states have call successors, (74), 4 states have call predecessors, (74), 2 states have return successors, (73), 17 states have call predecessors, (73), 17 states have call successors, (73) [2024-11-06 22:49:34,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:49:34,623 INFO L93 Difference]: Finished difference Result 146 states and 175 transitions. [2024-11-06 22:49:34,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-06 22:49:34,623 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 2.0384615384615383) internal successors, (53), 23 states have internal predecessors, (53), 17 states have call successors, (74), 4 states have call predecessors, (74), 2 states have return successors, (73), 17 states have call predecessors, (73), 17 states have call successors, (73) Word has length 261 [2024-11-06 22:49:34,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:49:34,624 INFO L225 Difference]: With dead ends: 146 [2024-11-06 22:49:34,624 INFO L226 Difference]: Without dead ends: 0 [2024-11-06 22:49:34,625 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 631 GetRequests, 599 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=179, Invalid=877, Unknown=0, NotChecked=0, Total=1056 [2024-11-06 22:49:34,625 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 8 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 22:49:34,625 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 318 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 22:49:34,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-06 22:49:34,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-06 22:49:34,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:49:34,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-06 22:49:34,625 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 261 [2024-11-06 22:49:34,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:49:34,625 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-06 22:49:34,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 2.0384615384615383) internal successors, (53), 23 states have internal predecessors, (53), 17 states have call successors, (74), 4 states have call predecessors, (74), 2 states have return successors, (73), 17 states have call predecessors, (73), 17 states have call successors, (73) [2024-11-06 22:49:34,626 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-06 22:49:34,626 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-06 22:49:34,627 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-06 22:49:34,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-06 22:49:34,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-06 22:49:34,833 INFO L407 BasicCegarLoop]: Path program histogram: [3, 3, 2, 1, 1, 1, 1, 1] [2024-11-06 22:49:34,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-06 22:49:36,073 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-06 22:49:36,088 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:49:36 BoogieIcfgContainer [2024-11-06 22:49:36,088 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-06 22:49:36,089 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-06 22:49:36,089 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-06 22:49:36,089 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-06 22:49:36,090 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:49:19" (3/4) ... [2024-11-06 22:49:36,091 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-06 22:49:36,095 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-06 22:49:36,098 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-11-06 22:49:36,098 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-06 22:49:36,098 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-06 22:49:36,098 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-06 22:49:36,142 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-06 22:49:36,142 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-06 22:49:36,142 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-06 22:49:36,142 INFO L158 Benchmark]: Toolchain (without parser) took 17130.61ms. Allocated memory was 100.7MB in the beginning and 184.5MB in the end (delta: 83.9MB). Free memory was 76.7MB in the beginning and 146.9MB in the end (delta: -70.2MB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. [2024-11-06 22:49:36,143 INFO L158 Benchmark]: CDTParser took 0.56ms. Allocated memory is still 83.9MB. Free memory is still 47.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-06 22:49:36,143 INFO L158 Benchmark]: CACSL2BoogieTranslator took 150.71ms. Allocated memory is still 100.7MB. Free memory was 76.6MB in the beginning and 65.2MB in the end (delta: 11.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-06 22:49:36,143 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.50ms. Allocated memory is still 100.7MB. Free memory was 65.2MB in the beginning and 63.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-06 22:49:36,143 INFO L158 Benchmark]: Boogie Preprocessor took 32.38ms. Allocated memory is still 100.7MB. Free memory was 63.9MB in the beginning and 62.7MB in the end (delta: 1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-06 22:49:36,144 INFO L158 Benchmark]: RCFGBuilder took 201.30ms. Allocated memory is still 100.7MB. Free memory was 62.7MB in the beginning and 51.8MB in the end (delta: 10.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-06 22:49:36,144 INFO L158 Benchmark]: TraceAbstraction took 16666.24ms. Allocated memory was 100.7MB in the beginning and 184.5MB in the end (delta: 83.9MB). Free memory was 51.1MB in the beginning and 151.1MB in the end (delta: -99.9MB). Peak memory consumption was 82.0MB. Max. memory is 16.1GB. [2024-11-06 22:49:36,144 INFO L158 Benchmark]: Witness Printer took 53.11ms. Allocated memory is still 184.5MB. Free memory was 151.1MB in the beginning and 146.9MB in the end (delta: 4.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-06 22:49:36,148 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56ms. Allocated memory is still 83.9MB. Free memory is still 47.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 150.71ms. Allocated memory is still 100.7MB. Free memory was 76.6MB in the beginning and 65.2MB in the end (delta: 11.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.50ms. Allocated memory is still 100.7MB. Free memory was 65.2MB in the beginning and 63.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 32.38ms. Allocated memory is still 100.7MB. Free memory was 63.9MB in the beginning and 62.7MB in the end (delta: 1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 201.30ms. Allocated memory is still 100.7MB. Free memory was 62.7MB in the beginning and 51.8MB in the end (delta: 10.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 16666.24ms. Allocated memory was 100.7MB in the beginning and 184.5MB in the end (delta: 83.9MB). Free memory was 51.1MB in the beginning and 151.1MB in the end (delta: -99.9MB). Peak memory consumption was 82.0MB. Max. memory is 16.1GB. * Witness Printer took 53.11ms. Allocated memory is still 184.5MB. Free memory was 151.1MB in the beginning and 146.9MB in the end (delta: 4.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 15.4s, OverallIterations: 13, TraceHistogramMax: 48, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 6.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 166 SdHoareTripleChecker+Valid, 5.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 113 mSDsluCounter, 2049 SdHoareTripleChecker+Invalid, 5.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1653 mSDsCounter, 333 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1639 IncrementalHoareTripleChecker+Invalid, 1972 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 333 mSolverCounterUnsat, 396 mSDtfsCounter, 1639 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1763 GetRequests, 1601 SyntacticMatches, 5 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 508 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=138occurred in iteration=12, InterpolantAutomatonStates: 111, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 47 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.3s InterpolantComputationTime, 1702 NumberOfCodeBlocks, 1465 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 1884 ConstructedInterpolants, 0 QuantifiedInterpolants, 7089 SizeOfPredicates, 27 NumberOfNonLiveVariables, 1496 ConjunctsInSsa, 239 ConjunctsInUnsatCore, 22 InterpolantComputations, 5 PerfectInterpolantSequences, 19215/19614 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: ((((((((z == 24) && (3 == n)) && (2 == a)) && (y == 37)) && (x == 27)) || ((((((a <= 2) && (7 == y)) && (z == 12)) && (x == 1)) && (n == 1)) && (0 <= a))) || ((((((2 == n) && (a <= 2)) && (1 <= a)) && (x == 8)) && (19 == y)) && (z == 18))) || ((((((a <= 2) && (y == 1)) && (n == 0)) && (0 <= a)) && (x == 0)) && (6 == z))) - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (cond != 0) Ensures: (cond != 0) RESULT: Ultimate proved your program to be correct! [2024-11-06 22:49:36,162 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE