./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.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/bitvector/soft_float_5a.c.cil.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', 'f6c91769726962c1478685c30d57ac239987d5f8a5f6832d1d60b9c031f35855'] 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/bitvector/soft_float_5a.c.cil.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 f6c91769726962c1478685c30d57ac239987d5f8a5f6832d1d60b9c031f35855 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-06 18:50:18,898 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 18:50:18,973 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-06 18:50:18,978 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 18:50:18,979 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 18:50:18,997 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 18:50:18,999 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 18:50:18,999 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 18:50:19,000 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 18:50:19,000 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 18:50:19,000 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 18:50:19,000 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 18:50:19,000 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 18:50:19,001 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 18:50:19,001 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 18:50:19,001 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 18:50:19,001 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 18:50:19,001 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-06 18:50:19,001 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-06 18:50:19,001 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-06 18:50:19,001 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 18:50:19,001 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 18:50:19,001 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 18:50:19,001 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 18:50:19,002 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 18:50:19,002 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-06 18:50:19,002 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 18:50:19,002 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 18:50:19,002 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 18:50:19,002 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 18:50:19,002 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 18:50:19,002 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 18:50:19,002 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 18:50:19,002 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 18:50:19,002 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 18:50:19,003 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 18:50:19,003 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-06 18:50:19,003 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-06 18:50:19,003 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 18:50:19,003 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 18:50:19,003 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 18:50:19,003 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 18:50:19,003 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 -> f6c91769726962c1478685c30d57ac239987d5f8a5f6832d1d60b9c031f35855 [2024-11-06 18:50:19,191 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 18:50:19,198 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 18:50:19,201 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 18:50:19,202 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 18:50:19,202 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 18:50:19,203 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2024-11-06 18:50:20,304 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 18:50:20,475 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 18:50:20,475 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2024-11-06 18:50:20,480 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b20db24b3/842be33ba2d64c928ed2944d656f7e22/FLAG0d00f4a90 [2024-11-06 18:50:20,875 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b20db24b3/842be33ba2d64c928ed2944d656f7e22 [2024-11-06 18:50:20,877 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 18:50:20,878 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-06 18:50:20,878 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 18:50:20,879 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 18:50:20,881 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 18:50:20,882 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:50:20" (1/1) ... [2024-11-06 18:50:20,882 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11cf099c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:50:20, skipping insertion in model container [2024-11-06 18:50:20,883 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:50:20" (1/1) ... [2024-11-06 18:50:20,896 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 18:50:20,979 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/bitvector/soft_float_5a.c.cil.c[728,741] [2024-11-06 18:50:21,010 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 18:50:21,016 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 18:50:21,023 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/bitvector/soft_float_5a.c.cil.c[728,741] [2024-11-06 18:50:21,051 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 18:50:21,060 INFO L204 MainTranslator]: Completed translation [2024-11-06 18:50:21,061 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:50:21 WrapperNode [2024-11-06 18:50:21,061 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 18:50:21,062 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 18:50:21,062 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 18:50:21,062 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 18:50:21,066 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:50:21" (1/1) ... [2024-11-06 18:50:21,074 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:50:21" (1/1) ... [2024-11-06 18:50:21,098 INFO L138 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 147 [2024-11-06 18:50:21,098 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 18:50:21,099 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 18:50:21,099 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 18:50:21,099 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 18:50:21,105 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:50:21" (1/1) ... [2024-11-06 18:50:21,106 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:50:21" (1/1) ... [2024-11-06 18:50:21,107 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:50:21" (1/1) ... [2024-11-06 18:50:21,120 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 18:50:21,124 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:50:21" (1/1) ... [2024-11-06 18:50:21,124 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:50:21" (1/1) ... [2024-11-06 18:50:21,127 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:50:21" (1/1) ... [2024-11-06 18:50:21,134 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:50:21" (1/1) ... [2024-11-06 18:50:21,135 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:50:21" (1/1) ... [2024-11-06 18:50:21,135 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:50:21" (1/1) ... [2024-11-06 18:50:21,136 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 18:50:21,140 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 18:50:21,141 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 18:50:21,141 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 18:50:21,141 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:50:21" (1/1) ... [2024-11-06 18:50:21,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 18:50:21,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:50:21,166 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-06 18:50:21,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-06 18:50:21,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 18:50:21,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-06 18:50:21,187 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2024-11-06 18:50:21,187 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2024-11-06 18:50:21,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 18:50:21,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 18:50:21,187 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-06 18:50:21,187 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-06 18:50:21,249 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 18:50:21,251 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 18:50:21,535 INFO L? ?]: Removed 62 outVars from TransFormulas that were not future-live. [2024-11-06 18:50:21,535 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 18:50:21,542 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 18:50:21,542 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-06 18:50:21,543 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:50:21 BoogieIcfgContainer [2024-11-06 18:50:21,543 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 18:50:21,544 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 18:50:21,544 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 18:50:21,548 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 18:50:21,548 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 06:50:20" (1/3) ... [2024-11-06 18:50:21,549 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2828f12d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:50:21, skipping insertion in model container [2024-11-06 18:50:21,549 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:50:21" (2/3) ... [2024-11-06 18:50:21,549 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2828f12d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:50:21, skipping insertion in model container [2024-11-06 18:50:21,549 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:50:21" (3/3) ... [2024-11-06 18:50:21,550 INFO L112 eAbstractionObserver]: Analyzing ICFG soft_float_5a.c.cil.c [2024-11-06 18:50:21,559 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 18:50:21,559 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-06 18:50:21,591 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 18:50:21,598 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;@4b018583, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 18:50:21,599 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-06 18:50:21,602 INFO L276 IsEmpty]: Start isEmpty. Operand has 75 states, 66 states have (on average 1.5454545454545454) internal successors, (102), 68 states have internal predecessors, (102), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-06 18:50:21,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-06 18:50:21,607 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:21,608 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:21,608 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:21,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:21,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1280901460, now seen corresponding path program 1 times [2024-11-06 18:50:21,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:21,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500263886] [2024-11-06 18:50:21,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:21,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:21,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:21,781 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:21,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:21,789 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:21,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:21,795 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-06 18:50:21,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:21,799 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-06 18:50:21,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:21,805 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-06 18:50:21,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:21,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500263886] [2024-11-06 18:50:21,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500263886] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:50:21,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:50:21,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 18:50:21,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140507989] [2024-11-06 18:50:21,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:50:21,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:50:21,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:21,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:50:21,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 18:50:21,824 INFO L87 Difference]: Start difference. First operand has 75 states, 66 states have (on average 1.5454545454545454) internal successors, (102), 68 states have internal predecessors, (102), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-06 18:50:21,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:21,857 INFO L93 Difference]: Finished difference Result 175 states and 269 transitions. [2024-11-06 18:50:21,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:50:21,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 42 [2024-11-06 18:50:21,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:21,862 INFO L225 Difference]: With dead ends: 175 [2024-11-06 18:50:21,862 INFO L226 Difference]: Without dead ends: 69 [2024-11-06 18:50:21,865 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 18:50:21,867 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 35 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:21,868 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 203 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 18:50:21,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-06 18:50:21,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2024-11-06 18:50:21,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 62 states have (on average 1.4193548387096775) internal successors, (88), 62 states have internal predecessors, (88), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-06 18:50:21,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 97 transitions. [2024-11-06 18:50:21,892 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 97 transitions. Word has length 42 [2024-11-06 18:50:21,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:21,893 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 97 transitions. [2024-11-06 18:50:21,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-06 18:50:21,894 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 97 transitions. [2024-11-06 18:50:21,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-06 18:50:21,895 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:21,895 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:21,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-06 18:50:21,895 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:21,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:21,896 INFO L85 PathProgramCache]: Analyzing trace with hash 2080463270, now seen corresponding path program 1 times [2024-11-06 18:50:21,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:21,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914150766] [2024-11-06 18:50:21,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:21,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:21,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:22,004 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:22,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:22,010 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:22,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:22,013 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-06 18:50:22,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:22,015 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-06 18:50:22,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:22,018 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-06 18:50:22,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:22,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914150766] [2024-11-06 18:50:22,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914150766] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:50:22,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:50:22,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-06 18:50:22,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842318370] [2024-11-06 18:50:22,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:50:22,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 18:50:22,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:22,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 18:50:22,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-06 18:50:22,020 INFO L87 Difference]: Start difference. First operand 69 states and 97 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-06 18:50:22,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:22,041 INFO L93 Difference]: Finished difference Result 106 states and 148 transitions. [2024-11-06 18:50:22,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 18:50:22,042 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 44 [2024-11-06 18:50:22,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:22,044 INFO L225 Difference]: With dead ends: 106 [2024-11-06 18:50:22,044 INFO L226 Difference]: Without dead ends: 69 [2024-11-06 18:50:22,044 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-06 18:50:22,045 INFO L432 NwaCegarLoop]: 96 mSDtfsCounter, 35 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:22,045 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 283 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 18:50:22,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-06 18:50:22,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2024-11-06 18:50:22,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 62 states have (on average 1.403225806451613) internal successors, (87), 62 states have internal predecessors, (87), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-06 18:50:22,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 96 transitions. [2024-11-06 18:50:22,052 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 96 transitions. Word has length 44 [2024-11-06 18:50:22,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:22,052 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 96 transitions. [2024-11-06 18:50:22,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-06 18:50:22,052 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 96 transitions. [2024-11-06 18:50:22,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-06 18:50:22,053 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:22,053 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:22,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-06 18:50:22,053 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:22,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:22,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1493657256, now seen corresponding path program 1 times [2024-11-06 18:50:22,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:22,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063243989] [2024-11-06 18:50:22,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:22,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:22,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:22,133 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:22,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:22,136 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:22,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:22,165 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-06 18:50:22,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:22,170 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-06 18:50:22,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:22,177 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-06 18:50:22,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:22,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063243989] [2024-11-06 18:50:22,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063243989] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:50:22,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520252211] [2024-11-06 18:50:22,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:22,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:22,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:50:22,181 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:50:22,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-06 18:50:22,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:22,253 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-06 18:50:22,256 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:50:22,307 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-06 18:50:22,307 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 18:50:22,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520252211] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:50:22,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 18:50:22,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-06 18:50:22,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617363269] [2024-11-06 18:50:22,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:50:22,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 18:50:22,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:22,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 18:50:22,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-06 18:50:22,309 INFO L87 Difference]: Start difference. First operand 69 states and 96 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:50:22,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:22,399 INFO L93 Difference]: Finished difference Result 156 states and 222 transitions. [2024-11-06 18:50:22,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 18:50:22,399 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 44 [2024-11-06 18:50:22,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:22,401 INFO L225 Difference]: With dead ends: 156 [2024-11-06 18:50:22,401 INFO L226 Difference]: Without dead ends: 90 [2024-11-06 18:50:22,401 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-06 18:50:22,402 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 21 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:22,402 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 222 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:50:22,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-06 18:50:22,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 82. [2024-11-06 18:50:22,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 74 states have (on average 1.3918918918918919) internal successors, (103), 74 states have internal predecessors, (103), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-06 18:50:22,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 114 transitions. [2024-11-06 18:50:22,412 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 114 transitions. Word has length 44 [2024-11-06 18:50:22,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:22,412 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 114 transitions. [2024-11-06 18:50:22,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:50:22,412 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 114 transitions. [2024-11-06 18:50:22,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-06 18:50:22,413 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:22,413 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:22,426 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-06 18:50:22,617 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 18:50:22,618 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:22,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:22,618 INFO L85 PathProgramCache]: Analyzing trace with hash 417180924, now seen corresponding path program 1 times [2024-11-06 18:50:22,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:22,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196035968] [2024-11-06 18:50:22,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:22,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:22,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:22,668 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:22,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:22,671 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:22,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:22,697 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-06 18:50:22,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:22,701 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-06 18:50:22,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:22,704 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-06 18:50:22,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:22,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196035968] [2024-11-06 18:50:22,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196035968] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:50:22,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793443168] [2024-11-06 18:50:22,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:22,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:22,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:50:22,708 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:50:22,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-06 18:50:22,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:22,760 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-06 18:50:22,761 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:50:22,791 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-06 18:50:22,792 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 18:50:22,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793443168] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:50:22,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 18:50:22,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-06 18:50:22,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823231294] [2024-11-06 18:50:22,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:50:22,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 18:50:22,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:22,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 18:50:22,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-06 18:50:22,793 INFO L87 Difference]: Start difference. First operand 82 states and 114 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:50:22,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:22,845 INFO L93 Difference]: Finished difference Result 172 states and 242 transitions. [2024-11-06 18:50:22,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 18:50:22,846 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 47 [2024-11-06 18:50:22,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:22,847 INFO L225 Difference]: With dead ends: 172 [2024-11-06 18:50:22,847 INFO L226 Difference]: Without dead ends: 97 [2024-11-06 18:50:22,847 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-06 18:50:22,848 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 15 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:22,848 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 238 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 18:50:22,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-06 18:50:22,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 87. [2024-11-06 18:50:22,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 78 states have (on average 1.3846153846153846) internal successors, (108), 79 states have internal predecessors, (108), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-06 18:50:22,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 121 transitions. [2024-11-06 18:50:22,855 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 121 transitions. Word has length 47 [2024-11-06 18:50:22,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:22,856 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 121 transitions. [2024-11-06 18:50:22,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:50:22,856 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 121 transitions. [2024-11-06 18:50:22,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-06 18:50:22,859 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:22,859 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:22,871 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-06 18:50:23,060 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 18:50:23,060 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:23,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:23,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1524103143, now seen corresponding path program 1 times [2024-11-06 18:50:23,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:23,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240031287] [2024-11-06 18:50:23,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:23,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:23,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:23,088 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:23,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:23,091 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:23,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:23,112 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-06 18:50:23,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:23,114 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-06 18:50:23,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:23,118 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-06 18:50:23,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:23,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240031287] [2024-11-06 18:50:23,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240031287] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:50:23,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186377666] [2024-11-06 18:50:23,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:23,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:23,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:50:23,122 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:50:23,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-06 18:50:23,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:23,172 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-06 18:50:23,173 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:50:23,195 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-06 18:50:23,199 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 18:50:23,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186377666] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:50:23,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 18:50:23,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-06 18:50:23,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809386704] [2024-11-06 18:50:23,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:50:23,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 18:50:23,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:23,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 18:50:23,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-06 18:50:23,200 INFO L87 Difference]: Start difference. First operand 87 states and 121 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:50:23,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:23,245 INFO L93 Difference]: Finished difference Result 178 states and 251 transitions. [2024-11-06 18:50:23,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 18:50:23,246 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 48 [2024-11-06 18:50:23,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:23,247 INFO L225 Difference]: With dead ends: 178 [2024-11-06 18:50:23,248 INFO L226 Difference]: Without dead ends: 98 [2024-11-06 18:50:23,248 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-06 18:50:23,250 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 16 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:23,251 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 240 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 18:50:23,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-06 18:50:23,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 88. [2024-11-06 18:50:23,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 79 states have (on average 1.3924050632911393) internal successors, (110), 80 states have internal predecessors, (110), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-06 18:50:23,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 123 transitions. [2024-11-06 18:50:23,261 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 123 transitions. Word has length 48 [2024-11-06 18:50:23,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:23,261 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 123 transitions. [2024-11-06 18:50:23,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:50:23,261 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 123 transitions. [2024-11-06 18:50:23,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-06 18:50:23,262 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:23,262 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:23,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-06 18:50:23,462 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 18:50:23,463 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:23,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:23,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1669508678, now seen corresponding path program 1 times [2024-11-06 18:50:23,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:23,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101910652] [2024-11-06 18:50:23,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:23,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:23,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:23,495 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:23,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:23,498 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:23,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:23,536 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-06 18:50:23,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:23,538 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-06 18:50:23,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:23,540 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-06 18:50:23,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:23,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101910652] [2024-11-06 18:50:23,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101910652] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:50:23,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275740470] [2024-11-06 18:50:23,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:23,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:23,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:50:23,542 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:50:23,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-06 18:50:23,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:23,591 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-06 18:50:23,592 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:50:23,622 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-06 18:50:23,622 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:50:23,707 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-06 18:50:23,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275740470] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:50:23,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:50:23,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-06 18:50:23,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537228715] [2024-11-06 18:50:23,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:50:23,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-06 18:50:23,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:23,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-06 18:50:23,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-06 18:50:23,709 INFO L87 Difference]: Start difference. First operand 88 states and 123 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-06 18:50:23,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:23,819 INFO L93 Difference]: Finished difference Result 229 states and 330 transitions. [2024-11-06 18:50:23,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-06 18:50:23,820 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 50 [2024-11-06 18:50:23,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:23,820 INFO L225 Difference]: With dead ends: 229 [2024-11-06 18:50:23,821 INFO L226 Difference]: Without dead ends: 148 [2024-11-06 18:50:23,821 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-11-06 18:50:23,825 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 116 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:23,826 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 375 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:50:23,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2024-11-06 18:50:23,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 102. [2024-11-06 18:50:23,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 93 states have (on average 1.4301075268817205) internal successors, (133), 94 states have internal predecessors, (133), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-06 18:50:23,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 146 transitions. [2024-11-06 18:50:23,833 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 146 transitions. Word has length 50 [2024-11-06 18:50:23,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:23,833 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 146 transitions. [2024-11-06 18:50:23,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-06 18:50:23,833 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 146 transitions. [2024-11-06 18:50:23,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-06 18:50:23,834 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:23,834 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:23,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-06 18:50:24,035 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 18:50:24,035 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:24,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:24,035 INFO L85 PathProgramCache]: Analyzing trace with hash 376667408, now seen corresponding path program 1 times [2024-11-06 18:50:24,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:24,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981521632] [2024-11-06 18:50:24,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:24,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:24,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:24,081 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:24,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:24,083 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:24,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:24,112 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-06 18:50:24,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:24,115 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-06 18:50:24,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:24,117 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-06 18:50:24,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:24,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981521632] [2024-11-06 18:50:24,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981521632] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:50:24,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463619415] [2024-11-06 18:50:24,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:24,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:24,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:50:24,119 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:50:24,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-06 18:50:24,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:24,168 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-06 18:50:24,169 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:50:24,203 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-06 18:50:24,204 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:50:24,278 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-06 18:50:24,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463619415] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:50:24,279 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:50:24,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-06 18:50:24,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285268048] [2024-11-06 18:50:24,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:50:24,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-06 18:50:24,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:24,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-06 18:50:24,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-06 18:50:24,280 INFO L87 Difference]: Start difference. First operand 102 states and 146 transitions. Second operand has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-06 18:50:24,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:24,398 INFO L93 Difference]: Finished difference Result 248 states and 362 transitions. [2024-11-06 18:50:24,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-06 18:50:24,399 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 51 [2024-11-06 18:50:24,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:24,400 INFO L225 Difference]: With dead ends: 248 [2024-11-06 18:50:24,400 INFO L226 Difference]: Without dead ends: 153 [2024-11-06 18:50:24,400 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-11-06 18:50:24,401 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 132 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:24,401 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 481 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:50:24,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2024-11-06 18:50:24,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 111. [2024-11-06 18:50:24,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 102 states have (on average 1.4509803921568627) internal successors, (148), 103 states have internal predecessors, (148), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-06 18:50:24,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 161 transitions. [2024-11-06 18:50:24,412 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 161 transitions. Word has length 51 [2024-11-06 18:50:24,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:24,412 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 161 transitions. [2024-11-06 18:50:24,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-06 18:50:24,412 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 161 transitions. [2024-11-06 18:50:24,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-06 18:50:24,413 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:24,413 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:24,425 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-06 18:50:24,613 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 18:50:24,613 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:24,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:24,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1690184016, now seen corresponding path program 1 times [2024-11-06 18:50:24,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:24,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581308417] [2024-11-06 18:50:24,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:24,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:24,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:24,646 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:24,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:24,651 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:24,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:24,670 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-06 18:50:24,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:24,672 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-06 18:50:24,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:24,674 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-06 18:50:24,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:24,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581308417] [2024-11-06 18:50:24,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581308417] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:50:24,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22295920] [2024-11-06 18:50:24,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:24,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:24,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:50:24,676 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:50:24,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-06 18:50:24,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:24,748 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-06 18:50:24,749 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:50:24,758 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-06 18:50:24,758 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 18:50:24,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22295920] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:50:24,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 18:50:24,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 3 [2024-11-06 18:50:24,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234335619] [2024-11-06 18:50:24,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:50:24,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:50:24,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:24,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:50:24,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 18:50:24,759 INFO L87 Difference]: Start difference. First operand 111 states and 161 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:50:24,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:24,790 INFO L93 Difference]: Finished difference Result 224 states and 332 transitions. [2024-11-06 18:50:24,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:50:24,792 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 52 [2024-11-06 18:50:24,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:24,793 INFO L225 Difference]: With dead ends: 224 [2024-11-06 18:50:24,794 INFO L226 Difference]: Without dead ends: 120 [2024-11-06 18:50:24,794 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 18:50:24,794 INFO L432 NwaCegarLoop]: 96 mSDtfsCounter, 5 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:24,794 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 172 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 18:50:24,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-11-06 18:50:24,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 113. [2024-11-06 18:50:24,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 104 states have (on average 1.4423076923076923) internal successors, (150), 105 states have internal predecessors, (150), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-06 18:50:24,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 163 transitions. [2024-11-06 18:50:24,804 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 163 transitions. Word has length 52 [2024-11-06 18:50:24,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:24,804 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 163 transitions. [2024-11-06 18:50:24,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:50:24,804 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 163 transitions. [2024-11-06 18:50:24,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-06 18:50:24,805 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:24,805 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:24,818 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-06 18:50:25,009 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 18:50:25,010 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:25,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:25,011 INFO L85 PathProgramCache]: Analyzing trace with hash -2138286388, now seen corresponding path program 1 times [2024-11-06 18:50:25,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:25,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873406653] [2024-11-06 18:50:25,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:25,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:25,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:25,035 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:25,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:25,037 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:25,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:25,052 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-06 18:50:25,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:25,055 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-06 18:50:25,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:25,057 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-06 18:50:25,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:25,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873406653] [2024-11-06 18:50:25,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873406653] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:50:25,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092439095] [2024-11-06 18:50:25,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:25,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:25,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:50:25,060 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:50:25,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-06 18:50:25,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:25,110 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-06 18:50:25,111 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:50:25,116 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-06 18:50:25,116 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 18:50:25,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092439095] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:50:25,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 18:50:25,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 3 [2024-11-06 18:50:25,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391023022] [2024-11-06 18:50:25,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:50:25,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:50:25,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:25,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:50:25,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 18:50:25,117 INFO L87 Difference]: Start difference. First operand 113 states and 163 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:50:25,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:25,148 INFO L93 Difference]: Finished difference Result 222 states and 326 transitions. [2024-11-06 18:50:25,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:50:25,151 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 52 [2024-11-06 18:50:25,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:25,152 INFO L225 Difference]: With dead ends: 222 [2024-11-06 18:50:25,152 INFO L226 Difference]: Without dead ends: 116 [2024-11-06 18:50:25,152 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 18:50:25,153 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 8 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:25,154 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 171 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 18:50:25,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-06 18:50:25,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 109. [2024-11-06 18:50:25,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 100 states have (on average 1.42) internal successors, (142), 101 states have internal predecessors, (142), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-06 18:50:25,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 155 transitions. [2024-11-06 18:50:25,162 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 155 transitions. Word has length 52 [2024-11-06 18:50:25,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:25,162 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 155 transitions. [2024-11-06 18:50:25,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:50:25,162 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 155 transitions. [2024-11-06 18:50:25,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-06 18:50:25,163 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:25,163 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:25,175 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-06 18:50:25,364 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 18:50:25,364 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:25,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:25,366 INFO L85 PathProgramCache]: Analyzing trace with hash -574027671, now seen corresponding path program 1 times [2024-11-06 18:50:25,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:25,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047203969] [2024-11-06 18:50:25,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:25,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:25,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:25,399 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:25,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:25,401 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:25,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:25,440 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-06 18:50:25,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:25,442 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-06 18:50:25,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:25,443 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-06 18:50:25,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:25,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047203969] [2024-11-06 18:50:25,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047203969] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:50:25,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80124934] [2024-11-06 18:50:25,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:25,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:25,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:50:25,446 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:50:25,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-06 18:50:25,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:25,495 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-06 18:50:25,496 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:50:25,554 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-06 18:50:25,555 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 18:50:25,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80124934] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:50:25,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 18:50:25,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2024-11-06 18:50:25,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178573699] [2024-11-06 18:50:25,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:50:25,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-06 18:50:25,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:25,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-06 18:50:25,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-06 18:50:25,556 INFO L87 Difference]: Start difference. First operand 109 states and 155 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-06 18:50:25,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:25,600 INFO L93 Difference]: Finished difference Result 154 states and 217 transitions. [2024-11-06 18:50:25,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-06 18:50:25,600 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 53 [2024-11-06 18:50:25,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:25,601 INFO L225 Difference]: With dead ends: 154 [2024-11-06 18:50:25,601 INFO L226 Difference]: Without dead ends: 149 [2024-11-06 18:50:25,601 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-06 18:50:25,601 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 39 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:25,602 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 525 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 18:50:25,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-11-06 18:50:25,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 148. [2024-11-06 18:50:25,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 137 states have (on average 1.4014598540145986) internal successors, (192), 139 states have internal predecessors, (192), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-06 18:50:25,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 210 transitions. [2024-11-06 18:50:25,612 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 210 transitions. Word has length 53 [2024-11-06 18:50:25,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:25,612 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 210 transitions. [2024-11-06 18:50:25,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-06 18:50:25,612 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 210 transitions. [2024-11-06 18:50:25,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-06 18:50:25,612 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:25,612 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:25,624 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 18:50:25,813 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 18:50:25,813 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:25,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:25,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1063288433, now seen corresponding path program 1 times [2024-11-06 18:50:25,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:25,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262477193] [2024-11-06 18:50:25,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:25,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:25,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:25,845 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:25,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:25,847 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:25,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:25,897 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-06 18:50:25,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:25,900 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-06 18:50:25,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:25,902 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-06 18:50:25,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:25,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262477193] [2024-11-06 18:50:25,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262477193] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:50:25,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597129119] [2024-11-06 18:50:25,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:25,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:25,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:50:25,904 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:50:25,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-06 18:50:25,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:25,955 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-06 18:50:25,957 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:50:26,033 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-06 18:50:26,033 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 18:50:26,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597129119] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:50:26,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 18:50:26,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [5] total 12 [2024-11-06 18:50:26,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702372321] [2024-11-06 18:50:26,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:50:26,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-06 18:50:26,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:26,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-06 18:50:26,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-06 18:50:26,034 INFO L87 Difference]: Start difference. First operand 148 states and 210 transitions. Second operand has 9 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:50:26,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:26,084 INFO L93 Difference]: Finished difference Result 196 states and 277 transitions. [2024-11-06 18:50:26,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-06 18:50:26,085 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 55 [2024-11-06 18:50:26,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:26,086 INFO L225 Difference]: With dead ends: 196 [2024-11-06 18:50:26,086 INFO L226 Difference]: Without dead ends: 162 [2024-11-06 18:50:26,086 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-06 18:50:26,086 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 5 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:26,086 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 700 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 18:50:26,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-11-06 18:50:26,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 157. [2024-11-06 18:50:26,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 145 states have (on average 1.3793103448275863) internal successors, (200), 146 states have internal predecessors, (200), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (18), 7 states have call predecessors, (18), 5 states have call successors, (18) [2024-11-06 18:50:26,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 224 transitions. [2024-11-06 18:50:26,093 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 224 transitions. Word has length 55 [2024-11-06 18:50:26,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:26,093 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 224 transitions. [2024-11-06 18:50:26,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:50:26,094 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 224 transitions. [2024-11-06 18:50:26,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-06 18:50:26,094 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:26,095 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:26,107 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 18:50:26,295 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 18:50:26,296 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:26,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:26,296 INFO L85 PathProgramCache]: Analyzing trace with hash -805122995, now seen corresponding path program 1 times [2024-11-06 18:50:26,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:26,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135460916] [2024-11-06 18:50:26,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:26,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:26,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:26,349 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:26,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:26,351 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:26,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:26,395 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-06 18:50:26,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:26,397 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-06 18:50:26,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:26,399 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-06 18:50:26,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:26,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135460916] [2024-11-06 18:50:26,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135460916] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:50:26,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343584622] [2024-11-06 18:50:26,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:26,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:26,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:50:26,401 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:50:26,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-06 18:50:26,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:26,450 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-06 18:50:26,451 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:50:26,505 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-06 18:50:26,506 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 18:50:26,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343584622] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:50:26,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 18:50:26,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-06 18:50:26,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806620727] [2024-11-06 18:50:26,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:50:26,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 18:50:26,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:26,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 18:50:26,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-06 18:50:26,507 INFO L87 Difference]: Start difference. First operand 157 states and 224 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:50:26,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:26,569 INFO L93 Difference]: Finished difference Result 321 states and 461 transitions. [2024-11-06 18:50:26,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-06 18:50:26,569 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 55 [2024-11-06 18:50:26,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:26,570 INFO L225 Difference]: With dead ends: 321 [2024-11-06 18:50:26,570 INFO L226 Difference]: Without dead ends: 171 [2024-11-06 18:50:26,571 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-11-06 18:50:26,571 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 21 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:26,571 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 256 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 18:50:26,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-11-06 18:50:26,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 158. [2024-11-06 18:50:26,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 146 states have (on average 1.3767123287671232) internal successors, (201), 147 states have internal predecessors, (201), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (18), 7 states have call predecessors, (18), 5 states have call successors, (18) [2024-11-06 18:50:26,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 225 transitions. [2024-11-06 18:50:26,578 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 225 transitions. Word has length 55 [2024-11-06 18:50:26,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:26,578 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 225 transitions. [2024-11-06 18:50:26,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:50:26,578 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 225 transitions. [2024-11-06 18:50:26,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-06 18:50:26,579 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:26,579 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:26,591 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-06 18:50:26,779 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 18:50:26,779 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:26,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:26,780 INFO L85 PathProgramCache]: Analyzing trace with hash -2067975980, now seen corresponding path program 1 times [2024-11-06 18:50:26,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:26,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423959391] [2024-11-06 18:50:26,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:26,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:26,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:26,806 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:26,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:26,807 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:26,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:26,833 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-06 18:50:26,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:26,835 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-06 18:50:26,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:26,836 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-06 18:50:26,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:26,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423959391] [2024-11-06 18:50:26,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423959391] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:50:26,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106804129] [2024-11-06 18:50:26,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:26,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:26,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:50:26,838 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:50:26,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-06 18:50:26,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:26,885 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-06 18:50:26,886 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:50:26,931 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-06 18:50:26,932 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 18:50:26,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106804129] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:50:26,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 18:50:26,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-06 18:50:26,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20919721] [2024-11-06 18:50:26,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:50:26,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:50:26,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:26,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:50:26,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 18:50:26,932 INFO L87 Difference]: Start difference. First operand 158 states and 225 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:50:26,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:26,962 INFO L93 Difference]: Finished difference Result 313 states and 450 transitions. [2024-11-06 18:50:26,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:50:26,963 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 55 [2024-11-06 18:50:26,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:26,964 INFO L225 Difference]: With dead ends: 313 [2024-11-06 18:50:26,964 INFO L226 Difference]: Without dead ends: 162 [2024-11-06 18:50:26,965 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 18:50:26,965 INFO L432 NwaCegarLoop]: 100 mSDtfsCounter, 6 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:26,965 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 178 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 18:50:26,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-11-06 18:50:26,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 157. [2024-11-06 18:50:26,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 145 states have (on average 1.3724137931034484) internal successors, (199), 146 states have internal predecessors, (199), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (18), 7 states have call predecessors, (18), 5 states have call successors, (18) [2024-11-06 18:50:26,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 223 transitions. [2024-11-06 18:50:26,974 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 223 transitions. Word has length 55 [2024-11-06 18:50:26,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:26,974 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 223 transitions. [2024-11-06 18:50:26,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:50:26,974 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 223 transitions. [2024-11-06 18:50:26,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-06 18:50:26,975 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:26,975 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:26,987 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-06 18:50:27,175 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 18:50:27,176 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:27,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:27,176 INFO L85 PathProgramCache]: Analyzing trace with hash 2085857113, now seen corresponding path program 1 times [2024-11-06 18:50:27,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:27,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633663210] [2024-11-06 18:50:27,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:27,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:27,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:27,206 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:27,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:27,208 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:27,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:27,240 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-06 18:50:27,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:27,242 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-06 18:50:27,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:27,244 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-06 18:50:27,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:27,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633663210] [2024-11-06 18:50:27,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633663210] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:50:27,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358520619] [2024-11-06 18:50:27,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:27,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:27,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:50:27,246 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:50:27,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-06 18:50:27,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:27,297 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-06 18:50:27,298 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:50:27,314 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-06 18:50:27,314 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 18:50:27,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358520619] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:50:27,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 18:50:27,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-06 18:50:27,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656568227] [2024-11-06 18:50:27,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:50:27,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 18:50:27,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:27,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 18:50:27,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-06 18:50:27,316 INFO L87 Difference]: Start difference. First operand 157 states and 223 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-06 18:50:27,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:27,338 INFO L93 Difference]: Finished difference Result 172 states and 239 transitions. [2024-11-06 18:50:27,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 18:50:27,339 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 56 [2024-11-06 18:50:27,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:27,340 INFO L225 Difference]: With dead ends: 172 [2024-11-06 18:50:27,340 INFO L226 Difference]: Without dead ends: 166 [2024-11-06 18:50:27,340 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-06 18:50:27,340 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 0 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:27,340 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 350 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 18:50:27,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-11-06 18:50:27,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2024-11-06 18:50:27,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 154 states have (on average 1.3571428571428572) internal successors, (209), 155 states have internal predecessors, (209), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (18), 7 states have call predecessors, (18), 5 states have call successors, (18) [2024-11-06 18:50:27,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 233 transitions. [2024-11-06 18:50:27,346 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 233 transitions. Word has length 56 [2024-11-06 18:50:27,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:27,347 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 233 transitions. [2024-11-06 18:50:27,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-06 18:50:27,347 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 233 transitions. [2024-11-06 18:50:27,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-06 18:50:27,348 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:27,348 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:27,360 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-06 18:50:27,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:27,549 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:27,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:27,549 INFO L85 PathProgramCache]: Analyzing trace with hash 2143115415, now seen corresponding path program 1 times [2024-11-06 18:50:27,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:27,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743688418] [2024-11-06 18:50:27,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:27,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:27,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:27,609 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:27,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:27,610 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:27,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:27,614 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-06 18:50:27,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:27,615 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-06 18:50:27,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:27,616 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-06 18:50:27,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:27,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743688418] [2024-11-06 18:50:27,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743688418] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:50:27,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:50:27,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-06 18:50:27,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577023529] [2024-11-06 18:50:27,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:50:27,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-06 18:50:27,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:27,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-06 18:50:27,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-06 18:50:27,618 INFO L87 Difference]: Start difference. First operand 166 states and 233 transitions. Second operand has 6 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-06 18:50:27,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:27,637 INFO L93 Difference]: Finished difference Result 172 states and 238 transitions. [2024-11-06 18:50:27,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-06 18:50:27,637 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 56 [2024-11-06 18:50:27,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:27,638 INFO L225 Difference]: With dead ends: 172 [2024-11-06 18:50:27,638 INFO L226 Difference]: Without dead ends: 154 [2024-11-06 18:50:27,638 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-06 18:50:27,638 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 1 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:27,639 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 458 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 18:50:27,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2024-11-06 18:50:27,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2024-11-06 18:50:27,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 142 states have (on average 1.3591549295774648) internal successors, (193), 144 states have internal predecessors, (193), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2024-11-06 18:50:27,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 214 transitions. [2024-11-06 18:50:27,646 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 214 transitions. Word has length 56 [2024-11-06 18:50:27,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:27,646 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 214 transitions. [2024-11-06 18:50:27,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-06 18:50:27,647 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 214 transitions. [2024-11-06 18:50:27,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-06 18:50:27,648 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:27,648 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:27,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-06 18:50:27,648 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:27,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:27,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1741950426, now seen corresponding path program 1 times [2024-11-06 18:50:27,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:27,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066105955] [2024-11-06 18:50:27,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:27,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:27,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:27,687 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:27,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:27,688 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:27,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:27,724 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-06 18:50:27,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:27,726 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-06 18:50:27,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:27,728 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-06 18:50:27,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:27,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066105955] [2024-11-06 18:50:27,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066105955] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:50:27,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892267323] [2024-11-06 18:50:27,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:27,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:27,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:50:27,730 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:50:27,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-06 18:50:27,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:27,779 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-06 18:50:27,780 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:50:27,848 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-06 18:50:27,848 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:50:28,036 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-06 18:50:28,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892267323] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:50:28,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:50:28,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10, 11] total 22 [2024-11-06 18:50:28,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546162421] [2024-11-06 18:50:28,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:50:28,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-06 18:50:28,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:28,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-06 18:50:28,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=404, Unknown=0, NotChecked=0, Total=462 [2024-11-06 18:50:28,037 INFO L87 Difference]: Start difference. First operand 154 states and 214 transitions. Second operand has 22 states, 22 states have (on average 3.272727272727273) internal successors, (72), 18 states have internal predecessors, (72), 4 states have call successors, (11), 2 states have call predecessors, (11), 6 states have return successors, (12), 8 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-06 18:50:28,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:28,349 INFO L93 Difference]: Finished difference Result 326 states and 456 transitions. [2024-11-06 18:50:28,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-06 18:50:28,350 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.272727272727273) internal successors, (72), 18 states have internal predecessors, (72), 4 states have call successors, (11), 2 states have call predecessors, (11), 6 states have return successors, (12), 8 states have call predecessors, (12), 4 states have call successors, (12) Word has length 58 [2024-11-06 18:50:28,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:28,351 INFO L225 Difference]: With dead ends: 326 [2024-11-06 18:50:28,351 INFO L226 Difference]: Without dead ends: 172 [2024-11-06 18:50:28,352 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=104, Invalid=766, Unknown=0, NotChecked=0, Total=870 [2024-11-06 18:50:28,352 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 126 mSDsluCounter, 990 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 1064 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:28,352 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 1064 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 18:50:28,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-11-06 18:50:28,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 110. [2024-11-06 18:50:28,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 97 states have (on average 1.309278350515464) internal successors, (127), 101 states have internal predecessors, (127), 6 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-06 18:50:28,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 149 transitions. [2024-11-06 18:50:28,365 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 149 transitions. Word has length 58 [2024-11-06 18:50:28,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:28,366 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 149 transitions. [2024-11-06 18:50:28,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.272727272727273) internal successors, (72), 18 states have internal predecessors, (72), 4 states have call successors, (11), 2 states have call predecessors, (11), 6 states have return successors, (12), 8 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-06 18:50:28,366 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 149 transitions. [2024-11-06 18:50:28,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-06 18:50:28,367 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:28,367 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:28,381 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-06 18:50:28,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:28,568 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:28,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:28,568 INFO L85 PathProgramCache]: Analyzing trace with hash 508824728, now seen corresponding path program 1 times [2024-11-06 18:50:28,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:28,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060141781] [2024-11-06 18:50:28,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:28,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:28,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:28,643 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:28,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:28,645 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:28,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:28,648 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-06 18:50:28,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:28,650 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-06 18:50:28,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:28,664 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-06 18:50:28,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:28,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060141781] [2024-11-06 18:50:28,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060141781] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:50:28,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:50:28,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-06 18:50:28,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791297523] [2024-11-06 18:50:28,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:50:28,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-06 18:50:28,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:28,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-06 18:50:28,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-06 18:50:28,666 INFO L87 Difference]: Start difference. First operand 110 states and 149 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-06 18:50:28,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:28,714 INFO L93 Difference]: Finished difference Result 151 states and 200 transitions. [2024-11-06 18:50:28,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-06 18:50:28,714 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 65 [2024-11-06 18:50:28,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:28,715 INFO L225 Difference]: With dead ends: 151 [2024-11-06 18:50:28,715 INFO L226 Difference]: Without dead ends: 110 [2024-11-06 18:50:28,715 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-06 18:50:28,716 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 1 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:28,716 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 505 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 18:50:28,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-06 18:50:28,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 105. [2024-11-06 18:50:28,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 94 states have (on average 1.3191489361702127) internal successors, (124), 97 states have internal predecessors, (124), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-06 18:50:28,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 139 transitions. [2024-11-06 18:50:28,725 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 139 transitions. Word has length 65 [2024-11-06 18:50:28,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:28,725 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 139 transitions. [2024-11-06 18:50:28,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-06 18:50:28,727 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 139 transitions. [2024-11-06 18:50:28,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-06 18:50:28,727 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:28,727 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:28,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-06 18:50:28,728 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:28,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:28,728 INFO L85 PathProgramCache]: Analyzing trace with hash -359796564, now seen corresponding path program 1 times [2024-11-06 18:50:28,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:28,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031004473] [2024-11-06 18:50:28,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:28,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:28,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:28,832 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:28,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:28,834 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:28,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:28,837 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-06 18:50:28,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:28,851 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-06 18:50:28,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:28,856 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-06 18:50:28,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:28,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031004473] [2024-11-06 18:50:28,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031004473] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:50:28,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454219566] [2024-11-06 18:50:28,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:28,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:28,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:50:28,858 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:50:28,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-06 18:50:28,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:28,919 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-06 18:50:28,920 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:50:28,936 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-06 18:50:28,937 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:50:29,020 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-06 18:50:29,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454219566] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:50:29,021 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:50:29,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-11-06 18:50:29,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994355119] [2024-11-06 18:50:29,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:50:29,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-06 18:50:29,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:29,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-06 18:50:29,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-06 18:50:29,023 INFO L87 Difference]: Start difference. First operand 105 states and 139 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 12 states have internal predecessors, (58), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-06 18:50:29,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:29,078 INFO L93 Difference]: Finished difference Result 151 states and 197 transitions. [2024-11-06 18:50:29,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-06 18:50:29,078 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 12 states have internal predecessors, (58), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 70 [2024-11-06 18:50:29,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:29,079 INFO L225 Difference]: With dead ends: 151 [2024-11-06 18:50:29,079 INFO L226 Difference]: Without dead ends: 105 [2024-11-06 18:50:29,080 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-11-06 18:50:29,080 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 2 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 938 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:29,080 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 938 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 18:50:29,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-06 18:50:29,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2024-11-06 18:50:29,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 94 states have (on average 1.2765957446808511) internal successors, (120), 97 states have internal predecessors, (120), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-06 18:50:29,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 133 transitions. [2024-11-06 18:50:29,106 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 133 transitions. Word has length 70 [2024-11-06 18:50:29,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:29,106 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 133 transitions. [2024-11-06 18:50:29,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 12 states have internal predecessors, (58), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-06 18:50:29,107 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 133 transitions. [2024-11-06 18:50:29,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-06 18:50:29,107 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:29,107 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:29,120 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-06 18:50:29,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-06 18:50:29,308 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:29,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:29,308 INFO L85 PathProgramCache]: Analyzing trace with hash -606537125, now seen corresponding path program 1 times [2024-11-06 18:50:29,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:29,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512246983] [2024-11-06 18:50:29,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:29,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:29,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:29,377 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:29,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:29,378 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:29,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:29,416 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-06 18:50:29,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:29,418 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-06 18:50:29,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:29,422 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-06 18:50:29,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:29,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512246983] [2024-11-06 18:50:29,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512246983] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:50:29,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231876415] [2024-11-06 18:50:29,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:29,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:29,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:50:29,424 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:50:29,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-06 18:50:29,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:29,481 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-06 18:50:29,483 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:50:29,516 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-06 18:50:29,516 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:50:29,651 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-06 18:50:29,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231876415] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:50:29,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:50:29,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 8] total 16 [2024-11-06 18:50:29,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609344102] [2024-11-06 18:50:29,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:50:29,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-06 18:50:29,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:29,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-06 18:50:29,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2024-11-06 18:50:29,653 INFO L87 Difference]: Start difference. First operand 105 states and 133 transitions. Second operand has 16 states, 16 states have (on average 5.125) internal successors, (82), 14 states have internal predecessors, (82), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-06 18:50:29,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:29,872 INFO L93 Difference]: Finished difference Result 229 states and 291 transitions. [2024-11-06 18:50:29,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-06 18:50:29,872 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 14 states have internal predecessors, (82), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) Word has length 74 [2024-11-06 18:50:29,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:29,873 INFO L225 Difference]: With dead ends: 229 [2024-11-06 18:50:29,873 INFO L226 Difference]: Without dead ends: 131 [2024-11-06 18:50:29,874 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2024-11-06 18:50:29,874 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 30 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:29,874 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 677 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:50:29,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-06 18:50:29,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 113. [2024-11-06 18:50:29,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 101 states have (on average 1.2574257425742574) internal successors, (127), 103 states have internal predecessors, (127), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2024-11-06 18:50:29,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 143 transitions. [2024-11-06 18:50:29,883 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 143 transitions. Word has length 74 [2024-11-06 18:50:29,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:29,883 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 143 transitions. [2024-11-06 18:50:29,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 14 states have internal predecessors, (82), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-06 18:50:29,883 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 143 transitions. [2024-11-06 18:50:29,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-06 18:50:29,883 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:29,883 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:29,895 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-06 18:50:30,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:30,087 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:30,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:30,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1376389855, now seen corresponding path program 1 times [2024-11-06 18:50:30,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:30,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4762259] [2024-11-06 18:50:30,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:30,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:30,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:30,152 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:30,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:30,153 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:30,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:30,210 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-06 18:50:30,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:30,212 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-06 18:50:30,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:30,215 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 19 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-06 18:50:30,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:30,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4762259] [2024-11-06 18:50:30,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4762259] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:50:30,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150775845] [2024-11-06 18:50:30,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:30,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:30,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:50:30,217 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:50:30,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-06 18:50:30,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:30,295 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-06 18:50:30,296 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:50:30,341 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-06 18:50:30,341 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:50:30,455 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-06 18:50:30,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150775845] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:50:30,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:50:30,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 18 [2024-11-06 18:50:30,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087332730] [2024-11-06 18:50:30,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:50:30,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-06 18:50:30,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:30,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-06 18:50:30,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2024-11-06 18:50:30,457 INFO L87 Difference]: Start difference. First operand 113 states and 143 transitions. Second operand has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 16 states have internal predecessors, (89), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-06 18:50:30,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:30,712 INFO L93 Difference]: Finished difference Result 241 states and 305 transitions. [2024-11-06 18:50:30,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-06 18:50:30,713 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 16 states have internal predecessors, (89), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) Word has length 77 [2024-11-06 18:50:30,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:30,713 INFO L225 Difference]: With dead ends: 241 [2024-11-06 18:50:30,713 INFO L226 Difference]: Without dead ends: 135 [2024-11-06 18:50:30,714 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2024-11-06 18:50:30,714 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 53 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:30,715 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 816 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 18:50:30,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-11-06 18:50:30,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 115. [2024-11-06 18:50:30,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 103 states have (on average 1.2524271844660195) internal successors, (129), 105 states have internal predecessors, (129), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2024-11-06 18:50:30,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 145 transitions. [2024-11-06 18:50:30,720 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 145 transitions. Word has length 77 [2024-11-06 18:50:30,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:30,720 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 145 transitions. [2024-11-06 18:50:30,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 16 states have internal predecessors, (89), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-06 18:50:30,721 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 145 transitions. [2024-11-06 18:50:30,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-06 18:50:30,721 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:30,721 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:30,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-06 18:50:30,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:30,922 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:30,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:30,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1710737197, now seen corresponding path program 1 times [2024-11-06 18:50:30,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:30,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914418792] [2024-11-06 18:50:30,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:30,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:30,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:30,963 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:30,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:30,965 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:30,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:31,012 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-06 18:50:31,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:31,014 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-06 18:50:31,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:31,017 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-06 18:50:31,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:31,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914418792] [2024-11-06 18:50:31,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914418792] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:50:31,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344966100] [2024-11-06 18:50:31,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:31,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:31,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:50:31,019 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:50:31,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-06 18:50:31,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:31,092 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-06 18:50:31,094 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:50:31,145 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 26 proven. 26 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-06 18:50:31,146 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:50:31,279 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-06 18:50:31,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344966100] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:50:31,279 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:50:31,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2024-11-06 18:50:31,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893354726] [2024-11-06 18:50:31,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:50:31,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-06 18:50:31,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:31,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-06 18:50:31,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=244, Unknown=0, NotChecked=0, Total=380 [2024-11-06 18:50:31,281 INFO L87 Difference]: Start difference. First operand 115 states and 145 transitions. Second operand has 20 states, 20 states have (on average 5.8) internal successors, (116), 20 states have internal predecessors, (116), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-06 18:50:31,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:31,379 INFO L93 Difference]: Finished difference Result 324 states and 416 transitions. [2024-11-06 18:50:31,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-06 18:50:31,379 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.8) internal successors, (116), 20 states have internal predecessors, (116), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 81 [2024-11-06 18:50:31,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:31,380 INFO L225 Difference]: With dead ends: 324 [2024-11-06 18:50:31,380 INFO L226 Difference]: Without dead ends: 210 [2024-11-06 18:50:31,381 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=267, Unknown=0, NotChecked=0, Total=420 [2024-11-06 18:50:31,381 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 240 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:31,381 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 412 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:50:31,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2024-11-06 18:50:31,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 133. [2024-11-06 18:50:31,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 121 states have (on average 1.2644628099173554) internal successors, (153), 123 states have internal predecessors, (153), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2024-11-06 18:50:31,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 169 transitions. [2024-11-06 18:50:31,390 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 169 transitions. Word has length 81 [2024-11-06 18:50:31,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:31,390 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 169 transitions. [2024-11-06 18:50:31,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.8) internal successors, (116), 20 states have internal predecessors, (116), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-06 18:50:31,391 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 169 transitions. [2024-11-06 18:50:31,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-06 18:50:31,392 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:50:31,392 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:31,404 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-06 18:50:31,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:31,593 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:50:31,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:50:31,593 INFO L85 PathProgramCache]: Analyzing trace with hash 522519232, now seen corresponding path program 1 times [2024-11-06 18:50:31,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:50:31,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113571035] [2024-11-06 18:50:31,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:31,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:50:31,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:31,681 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:50:31,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:31,682 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-06 18:50:31,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:31,787 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-06 18:50:31,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:31,789 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-06 18:50:31,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:31,792 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 4 proven. 25 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-06 18:50:31,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:50:31,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113571035] [2024-11-06 18:50:31,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113571035] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:50:31,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186267896] [2024-11-06 18:50:31,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:50:31,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:31,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:50:31,794 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:50:31,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-06 18:50:31,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:50:31,983 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-06 18:50:31,984 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:50:32,047 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-06 18:50:32,047 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:50:32,171 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-06 18:50:32,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186267896] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:50:32,171 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:50:32,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 19 [2024-11-06 18:50:32,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461116598] [2024-11-06 18:50:32,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:50:32,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-06 18:50:32,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:50:32,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-06 18:50:32,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2024-11-06 18:50:32,173 INFO L87 Difference]: Start difference. First operand 133 states and 169 transitions. Second operand has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 17 states have internal predecessors, (91), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-06 18:50:32,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:50:32,445 INFO L93 Difference]: Finished difference Result 243 states and 309 transitions. [2024-11-06 18:50:32,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-06 18:50:32,446 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 17 states have internal predecessors, (91), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) Word has length 82 [2024-11-06 18:50:32,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:50:32,446 INFO L225 Difference]: With dead ends: 243 [2024-11-06 18:50:32,446 INFO L226 Difference]: Without dead ends: 0 [2024-11-06 18:50:32,447 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 159 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2024-11-06 18:50:32,448 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 70 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 18:50:32,448 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 278 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 18:50:32,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-06 18:50:32,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-06 18:50:32,448 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 18:50:32,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-06 18:50:32,448 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 82 [2024-11-06 18:50:32,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:50:32,448 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-06 18:50:32,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 17 states have internal predecessors, (91), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-06 18:50:32,448 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-06 18:50:32,448 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-06 18:50:32,450 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-06 18:50:32,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-06 18:50:32,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:50:32,653 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:50:32,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-06 18:50:36,088 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-06 18:50:36,100 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 06:50:36 BoogieIcfgContainer [2024-11-06 18:50:36,100 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-06 18:50:36,101 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-06 18:50:36,101 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-06 18:50:36,101 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-06 18:50:36,101 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:50:21" (3/4) ... [2024-11-06 18:50:36,102 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-06 18:50:36,106 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure base2flt [2024-11-06 18:50:36,106 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-06 18:50:36,109 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2024-11-06 18:50:36,109 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2024-11-06 18:50:36,109 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-06 18:50:36,110 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-06 18:50:36,124 WARN L216 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((0 < \old(m)) && ((((e == \old(e)) && (m == \old(m))) && (m <= 33554431)) || (((((e <= \old(e)) && ((m % 2) == 0)) && ((m / 2) <= 4294967295)) && (0 <= (m / 2))) && (m <= 33554431)))) [2024-11-06 18:50:36,124 WARN L216 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((0 < \old(m)) && ((((\old(e) <= e) && (0 <= 0)) && (\old(m) != 1)) || (((e == \old(e)) && (m == \old(m))) && (16777216 <= m)))) [2024-11-06 18:50:36,133 WARN L140 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((0 < \old(m)) && ((((\old(e) <= e) && (0 <= 0)) && (\old(m) != 1)) || (((e == \old(e)) && (m == \old(m))) && (16777216 <= m)))) [2024-11-06 18:50:36,133 WARN L140 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((0 < \old(m)) && ((((e == \old(e)) && (m == \old(m))) && (m <= 33554431)) || (((((e <= \old(e)) && ((m % 2) == 0)) && ((m / 2) <= 4294967295)) && (0 <= (m / 2))) && (m <= 33554431)))) [2024-11-06 18:50:36,157 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-06 18:50:36,157 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-06 18:50:36,157 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-06 18:50:36,159 INFO L158 Benchmark]: Toolchain (without parser) took 15280.30ms. Allocated memory was 142.6MB in the beginning and 478.2MB in the end (delta: 335.5MB). Free memory was 116.5MB in the beginning and 337.0MB in the end (delta: -220.5MB). Peak memory consumption was 114.5MB. Max. memory is 16.1GB. [2024-11-06 18:50:36,159 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 117.4MB. Free memory is still 81.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-06 18:50:36,159 INFO L158 Benchmark]: CACSL2BoogieTranslator took 183.24ms. Allocated memory is still 142.6MB. Free memory was 116.3MB in the beginning and 102.9MB in the end (delta: 13.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-06 18:50:36,159 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.09ms. Allocated memory is still 142.6MB. Free memory was 102.9MB in the beginning and 101.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-06 18:50:36,159 INFO L158 Benchmark]: Boogie Preprocessor took 41.51ms. Allocated memory is still 142.6MB. Free memory was 101.2MB in the beginning and 99.5MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-06 18:50:36,159 INFO L158 Benchmark]: RCFGBuilder took 402.24ms. Allocated memory is still 142.6MB. Free memory was 99.5MB in the beginning and 79.5MB in the end (delta: 20.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-06 18:50:36,159 INFO L158 Benchmark]: TraceAbstraction took 14556.00ms. Allocated memory was 142.6MB in the beginning and 478.2MB in the end (delta: 335.5MB). Free memory was 79.0MB in the beginning and 345.2MB in the end (delta: -266.1MB). Peak memory consumption was 250.7MB. Max. memory is 16.1GB. [2024-11-06 18:50:36,159 INFO L158 Benchmark]: Witness Printer took 56.99ms. Allocated memory is still 478.2MB. Free memory was 345.2MB in the beginning and 337.0MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-06 18:50:36,162 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 117.4MB. Free memory is still 81.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 183.24ms. Allocated memory is still 142.6MB. Free memory was 116.3MB in the beginning and 102.9MB in the end (delta: 13.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.09ms. Allocated memory is still 142.6MB. Free memory was 102.9MB in the beginning and 101.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 41.51ms. Allocated memory is still 142.6MB. Free memory was 101.2MB in the beginning and 99.5MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 402.24ms. Allocated memory is still 142.6MB. Free memory was 99.5MB in the beginning and 79.5MB in the end (delta: 20.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 14556.00ms. Allocated memory was 142.6MB in the beginning and 478.2MB in the end (delta: 335.5MB). Free memory was 79.0MB in the beginning and 345.2MB in the end (delta: -266.1MB). Peak memory consumption was 250.7MB. Max. memory is 16.1GB. * Witness Printer took 56.99ms. Allocated memory is still 478.2MB. Free memory was 345.2MB in the beginning and 337.0MB in the end (delta: 8.2MB). 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 3 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 11.1s, OverallIterations: 22, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 982 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 977 mSDsluCounter, 9542 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7669 mSDsCounter, 103 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2299 IncrementalHoareTripleChecker+Invalid, 2402 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 103 mSolverCounterUnsat, 1873 mSDtfsCounter, 2299 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1903 GetRequests, 1690 SyntacticMatches, 3 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=166occurred in iteration=14, InterpolantAutomatonStates: 184, 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, 22 MinimizatonAttempts, 336 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 2327 NumberOfCodeBlocks, 2327 NumberOfCodeBlocksAsserted, 40 NumberOfCheckSat, 2822 ConstructedInterpolants, 0 QuantifiedInterpolants, 5144 SizeOfPredicates, 6 NumberOfNonLiveVariables, 3190 ConjunctsInSsa, 171 ConjunctsInUnsatCore, 48 InterpolantComputations, 14 PerfectInterpolantSequences, 1381/1735 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: 37]: Loop Invariant Derived loop invariant: ((0 < \old(m)) && ((((e == \old(e)) && (m == \old(m))) && (m <= 33554431)) || (((((e <= \old(e)) && ((m % 2) == 0)) && ((m / 2) <= 4294967295)) && (0 <= (m / 2))) && (m <= 33554431)))) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: ((0 < \old(m)) && ((((\old(e) <= e) && (0 <= 0)) && (\old(m) != 1)) || (((e == \old(e)) && (m == \old(m))) && (16777216 <= m)))) - ProcedureContractResult [Line: 24]: Procedure Contract for base2flt Derived contract for procedure base2flt. Ensures: ((\result == 0) || (0 < m)) - ProcedureContractResult [Line: 15]: 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 18:50:36,182 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