./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4f9af400 extending candidate: java ['java'] extending candidate: /usr/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/oracle-jdk-bin-*/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/openjdk-*/bin/java ['java', '/usr/bin/java'] extending candidate: /usr/lib/jvm/java-*-openjdk-amd64/bin/java ['java', '/usr/bin/java', '/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java', '/usr/lib/jvm/java-17-openjdk-amd64/bin/java', '/usr/lib/jvm/java-11-openjdk-amd64/bin/java', '/usr/lib/jvm/java-1.17.0-openjdk-amd64/bin/java'] ['/root/.sdkman/candidates/java/21.0.5-tem/bin/java', '-Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config', '-Xmx15G', '-Xms4m', '-jar', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar', '-data', '@noDefault', '-ultimatedata', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data', '-tc', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml', '-i', '../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c', '-s', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf', '--cacsl2boogietranslator.entry.function', 'main', '--witnessprinter.witness.directory', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux', '--witnessprinter.witness.filename', 'witness', '--witnessprinter.write.witness.besides.input.file', 'false', '--witnessprinter.graph.data.specification', 'CHECK( init(main()), LTL(G ! call(reach_error())) )\n\n', '--witnessprinter.graph.data.producer', 'Automizer', '--witnessprinter.graph.data.architecture', '32bit', '--witnessprinter.graph.data.programhash', 'bda512f5ab4e84c08e80fd02a1c07c8fba5ca60aa45d55edfde2cc268dd1288e'] Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bda512f5ab4e84c08e80fd02a1c07c8fba5ca60aa45d55edfde2cc268dd1288e --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-06 22:56:38,480 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 22:56:38,569 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-06 22:56:38,574 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 22:56:38,575 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 22:56:38,606 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 22:56:38,609 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 22:56:38,609 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 22:56:38,609 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 22:56:38,610 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 22:56:38,610 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 22:56:38,610 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 22:56:38,610 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 22:56:38,611 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 22:56:38,611 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 22:56:38,611 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 22:56:38,611 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 22:56:38,611 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-06 22:56:38,613 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-06 22:56:38,613 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-06 22:56:38,613 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 22:56:38,613 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 22:56:38,613 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 22:56:38,613 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 22:56:38,613 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 22:56:38,614 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-06 22:56:38,614 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 22:56:38,614 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 22:56:38,614 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 22:56:38,614 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 22:56:38,614 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 22:56:38,614 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 22:56:38,614 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 22:56:38,615 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 22:56:38,615 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 22:56:38,615 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 22:56:38,615 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-06 22:56:38,616 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-06 22:56:38,616 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 22:56:38,616 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 22:56:38,616 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 22:56:38,616 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 22:56:38,616 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 -> bda512f5ab4e84c08e80fd02a1c07c8fba5ca60aa45d55edfde2cc268dd1288e [2024-11-06 22:56:38,899 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 22:56:38,910 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 22:56:38,912 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 22:56:38,913 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 22:56:38,913 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 22:56:38,914 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c [2024-11-06 22:56:40,169 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 22:56:40,410 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 22:56:40,413 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c [2024-11-06 22:56:40,420 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f0b5cd0ec/2ffc791c39204bb38d2a8a5340cba523/FLAG4cfdc58f9 [2024-11-06 22:56:40,438 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f0b5cd0ec/2ffc791c39204bb38d2a8a5340cba523 [2024-11-06 22:56:40,440 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 22:56:40,442 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-06 22:56:40,443 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 22:56:40,443 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 22:56:40,447 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 22:56:40,448 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:56:40" (1/1) ... [2024-11-06 22:56:40,448 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72d56d7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:40, skipping insertion in model container [2024-11-06 22:56:40,448 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:56:40" (1/1) ... [2024-11-06 22:56:40,462 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 22:56:40,596 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c[490,503] [2024-11-06 22:56:40,619 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 22:56:40,631 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 22:56:40,642 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c[490,503] [2024-11-06 22:56:40,651 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 22:56:40,666 INFO L204 MainTranslator]: Completed translation [2024-11-06 22:56:40,666 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:40 WrapperNode [2024-11-06 22:56:40,666 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 22:56:40,667 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 22:56:40,667 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 22:56:40,667 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 22:56:40,672 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:40" (1/1) ... [2024-11-06 22:56:40,676 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:40" (1/1) ... [2024-11-06 22:56:40,689 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 83 [2024-11-06 22:56:40,689 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 22:56:40,689 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 22:56:40,689 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 22:56:40,690 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 22:56:40,697 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:40" (1/1) ... [2024-11-06 22:56:40,697 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:40" (1/1) ... [2024-11-06 22:56:40,698 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:40" (1/1) ... [2024-11-06 22:56:40,706 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-06 22:56:40,706 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:40" (1/1) ... [2024-11-06 22:56:40,706 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:40" (1/1) ... [2024-11-06 22:56:40,709 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:40" (1/1) ... [2024-11-06 22:56:40,713 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:40" (1/1) ... [2024-11-06 22:56:40,714 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:40" (1/1) ... [2024-11-06 22:56:40,715 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:40" (1/1) ... [2024-11-06 22:56:40,716 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 22:56:40,717 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 22:56:40,717 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 22:56:40,717 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 22:56:40,718 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:40" (1/1) ... [2024-11-06 22:56:40,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 22:56:40,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:56:40,751 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-06 22:56:40,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-06 22:56:40,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 22:56:40,775 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-06 22:56:40,775 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-06 22:56:40,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-06 22:56:40,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 22:56:40,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 22:56:40,775 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-06 22:56:40,775 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-06 22:56:40,826 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 22:56:40,828 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 22:56:40,961 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-11-06 22:56:40,962 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 22:56:40,972 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 22:56:40,972 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-06 22:56:40,972 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:56:40 BoogieIcfgContainer [2024-11-06 22:56:40,972 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 22:56:40,976 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 22:56:40,976 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 22:56:40,981 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 22:56:40,982 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:56:40" (1/3) ... [2024-11-06 22:56:40,983 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e07c312 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:56:40, skipping insertion in model container [2024-11-06 22:56:40,983 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:40" (2/3) ... [2024-11-06 22:56:40,983 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e07c312 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:56:40, skipping insertion in model container [2024-11-06 22:56:40,984 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:56:40" (3/3) ... [2024-11-06 22:56:40,986 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd3-ll_valuebound2.c [2024-11-06 22:56:41,001 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 22:56:41,001 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-06 22:56:41,052 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 22:56:41,065 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;@7679e036, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 22:56:41,065 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-06 22:56:41,070 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-06 22:56:41,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-06 22:56:41,077 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:56:41,077 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:56:41,078 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:56:41,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:56:41,083 INFO L85 PathProgramCache]: Analyzing trace with hash 872320404, now seen corresponding path program 1 times [2024-11-06 22:56:41,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:56:41,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629171731] [2024-11-06 22:56:41,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:56:41,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:56:41,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:41,217 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 22:56:41,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:41,226 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 22:56:41,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:41,248 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-06 22:56:41,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:41,255 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-06 22:56:41,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:41,265 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-06 22:56:41,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:56:41,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629171731] [2024-11-06 22:56:41,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629171731] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 22:56:41,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 22:56:41,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 22:56:41,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998448826] [2024-11-06 22:56:41,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 22:56:41,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-06 22:56:41,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:56:41,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-06 22:56:41,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-06 22:56:41,292 INFO L87 Difference]: Start difference. First operand has 35 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 22:56:41,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:56:41,311 INFO L93 Difference]: Finished difference Result 67 states and 109 transitions. [2024-11-06 22:56:41,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-06 22:56:41,314 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2024-11-06 22:56:41,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:56:41,318 INFO L225 Difference]: With dead ends: 67 [2024-11-06 22:56:41,319 INFO L226 Difference]: Without dead ends: 31 [2024-11-06 22:56:41,322 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-06 22:56:41,326 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 22:56:41,327 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 22:56:41,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-06 22:56:41,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-11-06 22:56:41,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-06 22:56:41,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 40 transitions. [2024-11-06 22:56:41,363 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 40 transitions. Word has length 29 [2024-11-06 22:56:41,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:56:41,364 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 40 transitions. [2024-11-06 22:56:41,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 22:56:41,364 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 40 transitions. [2024-11-06 22:56:41,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-06 22:56:41,366 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:56:41,366 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:56:41,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-06 22:56:41,366 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:56:41,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:56:41,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1714405113, now seen corresponding path program 1 times [2024-11-06 22:56:41,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:56:41,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550035895] [2024-11-06 22:56:41,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:56:41,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:56:41,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:41,595 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 22:56:41,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:41,602 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 22:56:41,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:41,605 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-06 22:56:41,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:41,613 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-06 22:56:41,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:41,660 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-06 22:56:41,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:56:41,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550035895] [2024-11-06 22:56:41,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550035895] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 22:56:41,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 22:56:41,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-06 22:56:41,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058101874] [2024-11-06 22:56:41,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 22:56:41,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-06 22:56:41,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:56:41,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-06 22:56:41,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-06 22:56:41,663 INFO L87 Difference]: Start difference. First operand 31 states and 40 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 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 22:56:41,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:56:41,785 INFO L93 Difference]: Finished difference Result 50 states and 65 transitions. [2024-11-06 22:56:41,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-06 22:56:41,785 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 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 30 [2024-11-06 22:56:41,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:56:41,787 INFO L225 Difference]: With dead ends: 50 [2024-11-06 22:56:41,787 INFO L226 Difference]: Without dead ends: 43 [2024-11-06 22:56:41,787 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-06 22:56:41,788 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 28 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:56:41,790 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 102 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:56:41,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-06 22:56:41,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 33. [2024-11-06 22:56:41,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 22 states have internal predecessors, (25), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-06 22:56:41,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2024-11-06 22:56:41,800 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 30 [2024-11-06 22:56:41,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:56:41,803 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2024-11-06 22:56:41,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 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 22:56:41,803 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2024-11-06 22:56:41,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-06 22:56:41,805 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:56:41,805 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:56:41,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-06 22:56:41,806 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:56:41,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:56:41,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1825736765, now seen corresponding path program 1 times [2024-11-06 22:56:41,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:56:41,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587531091] [2024-11-06 22:56:41,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:56:41,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:56:41,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 22:56:41,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [150425935] [2024-11-06 22:56:41,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:56:41,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:56:41,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:56:41,846 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:56:41,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-06 22:56:41,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:41,914 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-06 22:56:41,921 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:56:42,059 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-06 22:56:42,060 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 22:56:42,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:56:42,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587531091] [2024-11-06 22:56:42,061 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 22:56:42,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150425935] [2024-11-06 22:56:42,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150425935] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 22:56:42,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 22:56:42,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-06 22:56:42,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67260004] [2024-11-06 22:56:42,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 22:56:42,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 22:56:42,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:56:42,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 22:56:42,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 22:56:42,065 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 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 22:56:42,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:56:42,122 INFO L93 Difference]: Finished difference Result 49 states and 63 transitions. [2024-11-06 22:56:42,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 22:56:42,122 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 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 33 [2024-11-06 22:56:42,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:56:42,123 INFO L225 Difference]: With dead ends: 49 [2024-11-06 22:56:42,123 INFO L226 Difference]: Without dead ends: 47 [2024-11-06 22:56:42,124 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-06 22:56:42,124 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 7 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 22:56:42,124 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 134 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 22:56:42,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-06 22:56:42,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2024-11-06 22:56:42,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 29 states have (on average 1.206896551724138) internal successors, (35), 30 states have internal predecessors, (35), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-06 22:56:42,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 60 transitions. [2024-11-06 22:56:42,144 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 60 transitions. Word has length 33 [2024-11-06 22:56:42,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:56:42,144 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 60 transitions. [2024-11-06 22:56:42,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 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 22:56:42,145 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 60 transitions. [2024-11-06 22:56:42,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-06 22:56:42,145 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:56:42,145 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:56:42,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-06 22:56:42,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:56:42,346 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:56:42,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:56:42,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1547103247, now seen corresponding path program 1 times [2024-11-06 22:56:42,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:56:42,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071431953] [2024-11-06 22:56:42,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:56:42,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:56:42,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:42,536 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 22:56:42,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:42,539 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 22:56:42,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:42,543 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-06 22:56:42,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:42,574 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-06 22:56:42,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:42,582 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-06 22:56:42,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:56:42,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071431953] [2024-11-06 22:56:42,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071431953] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:56:42,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217400228] [2024-11-06 22:56:42,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:56:42,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:56:42,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:56:42,588 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:56:42,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-06 22:56:42,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:42,638 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-06 22:56:42,640 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:56:42,694 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-06 22:56:42,694 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:56:42,812 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-06 22:56:42,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217400228] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:56:42,812 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:56:42,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2024-11-06 22:56:42,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336070106] [2024-11-06 22:56:42,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:56:42,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-06 22:56:42,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:56:42,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-06 22:56:42,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-11-06 22:56:42,814 INFO L87 Difference]: Start difference. First operand 46 states and 60 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 3 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 22:56:43,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:56:43,022 INFO L93 Difference]: Finished difference Result 99 states and 139 transitions. [2024-11-06 22:56:43,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-06 22:56:43,024 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 3 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 35 [2024-11-06 22:56:43,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:56:43,025 INFO L225 Difference]: With dead ends: 99 [2024-11-06 22:56:43,025 INFO L226 Difference]: Without dead ends: 92 [2024-11-06 22:56:43,025 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 69 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2024-11-06 22:56:43,026 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 67 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:56:43,026 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 234 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:56:43,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-06 22:56:43,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 67. [2024-11-06 22:56:43,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 46 states have (on average 1.2608695652173914) internal successors, (58), 47 states have internal predecessors, (58), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-06 22:56:43,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 91 transitions. [2024-11-06 22:56:43,040 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 91 transitions. Word has length 35 [2024-11-06 22:56:43,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:56:43,041 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 91 transitions. [2024-11-06 22:56:43,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 3 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 22:56:43,041 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 91 transitions. [2024-11-06 22:56:43,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-06 22:56:43,044 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:56:43,044 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2024-11-06 22:56:43,061 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-06 22:56:43,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:56:43,249 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:56:43,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:56:43,249 INFO L85 PathProgramCache]: Analyzing trace with hash -720434099, now seen corresponding path program 1 times [2024-11-06 22:56:43,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:56:43,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054206027] [2024-11-06 22:56:43,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:56:43,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:56:43,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 22:56:43,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [181431548] [2024-11-06 22:56:43,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:56:43,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:56:43,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:56:43,271 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:56:43,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-06 22:56:43,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:43,329 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-06 22:56:43,330 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:56:43,413 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-06 22:56:43,414 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 22:56:43,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:56:43,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054206027] [2024-11-06 22:56:43,414 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 22:56:43,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181431548] [2024-11-06 22:56:43,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181431548] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 22:56:43,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 22:56:43,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-06 22:56:43,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103248027] [2024-11-06 22:56:43,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 22:56:43,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 22:56:43,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:56:43,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 22:56:43,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 22:56:43,416 INFO L87 Difference]: Start difference. First operand 67 states and 91 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-06 22:56:43,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:56:43,475 INFO L93 Difference]: Finished difference Result 75 states and 98 transitions. [2024-11-06 22:56:43,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 22:56:43,475 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 38 [2024-11-06 22:56:43,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:56:43,476 INFO L225 Difference]: With dead ends: 75 [2024-11-06 22:56:43,476 INFO L226 Difference]: Without dead ends: 73 [2024-11-06 22:56:43,477 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-06 22:56:43,477 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 7 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 22:56:43,477 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 131 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 22:56:43,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-06 22:56:43,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2024-11-06 22:56:43,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 49 states have (on average 1.2448979591836735) internal successors, (61), 50 states have internal predecessors, (61), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-06 22:56:43,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 94 transitions. [2024-11-06 22:56:43,499 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 94 transitions. Word has length 38 [2024-11-06 22:56:43,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:56:43,499 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 94 transitions. [2024-11-06 22:56:43,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-06 22:56:43,500 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 94 transitions. [2024-11-06 22:56:43,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-06 22:56:43,501 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:56:43,501 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:56:43,517 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 22:56:43,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:56:43,705 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:56:43,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:56:43,705 INFO L85 PathProgramCache]: Analyzing trace with hash -376152117, now seen corresponding path program 1 times [2024-11-06 22:56:43,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:56:43,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912675231] [2024-11-06 22:56:43,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:56:43,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:56:43,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 22:56:43,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [334379029] [2024-11-06 22:56:43,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:56:43,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:56:43,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:56:43,731 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:56:43,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-06 22:56:43,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:43,788 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-06 22:56:43,790 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:56:43,943 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-06 22:56:43,944 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:56:44,039 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-06 22:56:44,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:56:44,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912675231] [2024-11-06 22:56:44,040 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 22:56:44,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334379029] [2024-11-06 22:56:44,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334379029] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:56:44,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 22:56:44,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2024-11-06 22:56:44,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317515785] [2024-11-06 22:56:44,040 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 22:56:44,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-06 22:56:44,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:56:44,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-06 22:56:44,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-06 22:56:44,042 INFO L87 Difference]: Start difference. First operand 71 states and 94 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-06 22:56:44,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:56:44,232 INFO L93 Difference]: Finished difference Result 107 states and 143 transitions. [2024-11-06 22:56:44,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-06 22:56:44,233 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 38 [2024-11-06 22:56:44,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:56:44,234 INFO L225 Difference]: With dead ends: 107 [2024-11-06 22:56:44,234 INFO L226 Difference]: Without dead ends: 105 [2024-11-06 22:56:44,234 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 65 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-06 22:56:44,235 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 30 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:56:44,235 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 235 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:56:44,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-06 22:56:44,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 101. [2024-11-06 22:56:44,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 70 states have (on average 1.2571428571428571) internal successors, (88), 71 states have internal predecessors, (88), 25 states have call successors, (25), 5 states have call predecessors, (25), 5 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-06 22:56:44,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 137 transitions. [2024-11-06 22:56:44,261 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 137 transitions. Word has length 38 [2024-11-06 22:56:44,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:56:44,262 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 137 transitions. [2024-11-06 22:56:44,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-06 22:56:44,262 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 137 transitions. [2024-11-06 22:56:44,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-06 22:56:44,263 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:56:44,263 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] [2024-11-06 22:56:44,279 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-06 22:56:44,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-06 22:56:44,464 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:56:44,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:56:44,464 INFO L85 PathProgramCache]: Analyzing trace with hash 279172547, now seen corresponding path program 1 times [2024-11-06 22:56:44,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:56:44,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059940109] [2024-11-06 22:56:44,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:56:44,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:56:44,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 22:56:44,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [303255073] [2024-11-06 22:56:44,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:56:44,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:56:44,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:56:44,480 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:56:44,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-06 22:56:44,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:44,526 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-06 22:56:44,527 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:56:44,571 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-06 22:56:44,572 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 22:56:44,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:56:44,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059940109] [2024-11-06 22:56:44,572 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 22:56:44,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303255073] [2024-11-06 22:56:44,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303255073] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 22:56:44,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 22:56:44,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-06 22:56:44,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651611192] [2024-11-06 22:56:44,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 22:56:44,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 22:56:44,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:56:44,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 22:56:44,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 22:56:44,576 INFO L87 Difference]: Start difference. First operand 101 states and 137 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-06 22:56:44,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:56:44,667 INFO L93 Difference]: Finished difference Result 147 states and 209 transitions. [2024-11-06 22:56:44,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 22:56:44,669 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 43 [2024-11-06 22:56:44,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:56:44,670 INFO L225 Difference]: With dead ends: 147 [2024-11-06 22:56:44,670 INFO L226 Difference]: Without dead ends: 145 [2024-11-06 22:56:44,670 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-06 22:56:44,671 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 6 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 22:56:44,671 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 124 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 22:56:44,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-11-06 22:56:44,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 139. [2024-11-06 22:56:44,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 87 states have (on average 1.2873563218390804) internal successors, (112), 88 states have internal predecessors, (112), 45 states have call successors, (45), 6 states have call predecessors, (45), 6 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-06 22:56:44,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 201 transitions. [2024-11-06 22:56:44,710 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 201 transitions. Word has length 43 [2024-11-06 22:56:44,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:56:44,711 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 201 transitions. [2024-11-06 22:56:44,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-06 22:56:44,711 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 201 transitions. [2024-11-06 22:56:44,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-06 22:56:44,712 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:56:44,713 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2024-11-06 22:56:44,729 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 22:56:44,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:56:44,913 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:56:44,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:56:44,914 INFO L85 PathProgramCache]: Analyzing trace with hash -2141198011, now seen corresponding path program 1 times [2024-11-06 22:56:44,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:56:44,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629111339] [2024-11-06 22:56:44,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:56:44,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:56:44,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 22:56:44,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1661699029] [2024-11-06 22:56:44,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:56:44,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:56:44,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:56:44,930 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:56:44,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-06 22:56:44,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:44,979 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-06 22:56:44,981 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:56:45,119 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-06 22:56:45,119 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:56:45,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:56:45,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629111339] [2024-11-06 22:56:45,173 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 22:56:45,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661699029] [2024-11-06 22:56:45,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661699029] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:56:45,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-06 22:56:45,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2024-11-06 22:56:45,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942981960] [2024-11-06 22:56:45,174 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-06 22:56:45,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-06 22:56:45,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:56:45,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-06 22:56:45,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-06 22:56:45,176 INFO L87 Difference]: Start difference. First operand 139 states and 201 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-06 22:56:45,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:56:45,348 INFO L93 Difference]: Finished difference Result 152 states and 212 transitions. [2024-11-06 22:56:45,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-06 22:56:45,350 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 43 [2024-11-06 22:56:45,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:56:45,351 INFO L225 Difference]: With dead ends: 152 [2024-11-06 22:56:45,352 INFO L226 Difference]: Without dead ends: 150 [2024-11-06 22:56:45,352 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-06 22:56:45,352 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 26 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:56:45,353 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 209 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:56:45,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-11-06 22:56:45,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 147. [2024-11-06 22:56:45,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 93 states have (on average 1.2688172043010753) internal successors, (118), 94 states have internal predecessors, (118), 45 states have call successors, (45), 8 states have call predecessors, (45), 8 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-06 22:56:45,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 207 transitions. [2024-11-06 22:56:45,384 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 207 transitions. Word has length 43 [2024-11-06 22:56:45,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:56:45,385 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 207 transitions. [2024-11-06 22:56:45,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-06 22:56:45,385 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 207 transitions. [2024-11-06 22:56:45,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-06 22:56:45,386 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:56:45,387 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:56:45,403 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-06 22:56:45,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-06 22:56:45,587 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:56:45,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:56:45,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1796916029, now seen corresponding path program 2 times [2024-11-06 22:56:45,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:56:45,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076647473] [2024-11-06 22:56:45,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:56:45,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:56:45,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:45,658 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 22:56:45,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:45,660 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 22:56:45,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:45,662 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-06 22:56:45,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:45,664 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-06 22:56:45,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:45,666 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-06 22:56:45,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:56:45,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076647473] [2024-11-06 22:56:45,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076647473] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 22:56:45,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 22:56:45,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-06 22:56:45,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206716954] [2024-11-06 22:56:45,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 22:56:45,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 22:56:45,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:56:45,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 22:56:45,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 22:56:45,667 INFO L87 Difference]: Start difference. First operand 147 states and 207 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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 22:56:45,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:56:45,758 INFO L93 Difference]: Finished difference Result 186 states and 259 transitions. [2024-11-06 22:56:45,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-06 22:56:45,759 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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 43 [2024-11-06 22:56:45,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:56:45,760 INFO L225 Difference]: With dead ends: 186 [2024-11-06 22:56:45,760 INFO L226 Difference]: Without dead ends: 130 [2024-11-06 22:56:45,761 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-06 22:56:45,761 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 18 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:56:45,762 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 160 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:56:45,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-11-06 22:56:45,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 122. [2024-11-06 22:56:45,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 76 states have (on average 1.2105263157894737) internal successors, (92), 77 states have internal predecessors, (92), 37 states have call successors, (37), 8 states have call predecessors, (37), 8 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-06 22:56:45,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 165 transitions. [2024-11-06 22:56:45,791 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 165 transitions. Word has length 43 [2024-11-06 22:56:45,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:56:45,792 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 165 transitions. [2024-11-06 22:56:45,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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 22:56:45,792 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 165 transitions. [2024-11-06 22:56:45,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-06 22:56:45,794 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:56:45,794 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 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] [2024-11-06 22:56:45,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-06 22:56:45,795 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:56:45,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:56:45,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1189241395, now seen corresponding path program 1 times [2024-11-06 22:56:45,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:56:45,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014845623] [2024-11-06 22:56:45,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:56:45,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:56:45,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 22:56:45,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [277590800] [2024-11-06 22:56:45,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:56:45,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:56:45,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:56:45,819 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:56:45,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-06 22:56:45,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:45,869 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-06 22:56:45,872 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:56:45,917 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-06 22:56:45,918 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 22:56:45,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:56:45,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014845623] [2024-11-06 22:56:45,918 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 22:56:45,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277590800] [2024-11-06 22:56:45,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277590800] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 22:56:45,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 22:56:45,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-06 22:56:45,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240767353] [2024-11-06 22:56:45,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 22:56:45,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 22:56:45,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:56:45,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 22:56:45,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 22:56:45,920 INFO L87 Difference]: Start difference. First operand 122 states and 165 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-06 22:56:46,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:56:46,001 INFO L93 Difference]: Finished difference Result 180 states and 262 transitions. [2024-11-06 22:56:46,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 22:56:46,002 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 48 [2024-11-06 22:56:46,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:56:46,004 INFO L225 Difference]: With dead ends: 180 [2024-11-06 22:56:46,004 INFO L226 Difference]: Without dead ends: 178 [2024-11-06 22:56:46,005 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-06 22:56:46,005 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 4 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 22:56:46,005 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 132 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 22:56:46,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-11-06 22:56:46,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 166. [2024-11-06 22:56:46,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 87 states have (on average 1.1839080459770115) internal successors, (103), 96 states have internal predecessors, (103), 69 states have call successors, (69), 9 states have call predecessors, (69), 9 states have return successors, (68), 60 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-06 22:56:46,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 240 transitions. [2024-11-06 22:56:46,047 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 240 transitions. Word has length 48 [2024-11-06 22:56:46,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:56:46,047 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 240 transitions. [2024-11-06 22:56:46,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-06 22:56:46,047 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 240 transitions. [2024-11-06 22:56:46,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-06 22:56:46,049 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:56:46,049 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 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] [2024-11-06 22:56:46,065 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-06 22:56:46,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:56:46,250 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:56:46,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:56:46,250 INFO L85 PathProgramCache]: Analyzing trace with hash -828341661, now seen corresponding path program 1 times [2024-11-06 22:56:46,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:56:46,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568221290] [2024-11-06 22:56:46,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:56:46,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:56:46,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 22:56:46,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [972412136] [2024-11-06 22:56:46,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:56:46,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:56:46,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:56:46,277 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:56:46,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-06 22:56:46,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:46,335 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-06 22:56:46,339 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:56:47,013 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-06 22:56:47,013 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:56:48,686 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-06 22:56:48,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:56:48,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568221290] [2024-11-06 22:56:48,687 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 22:56:48,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972412136] [2024-11-06 22:56:48,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972412136] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:56:48,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 22:56:48,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 23 [2024-11-06 22:56:48,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098802089] [2024-11-06 22:56:48,688 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 22:56:48,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-06 22:56:48,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:56:48,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-06 22:56:48,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2024-11-06 22:56:48,690 INFO L87 Difference]: Start difference. First operand 166 states and 240 transitions. Second operand has 23 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 20 states have internal predecessors, (43), 6 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-06 22:56:52,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:56:52,273 INFO L93 Difference]: Finished difference Result 445 states and 665 transitions. [2024-11-06 22:56:52,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-06 22:56:52,273 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 20 states have internal predecessors, (43), 6 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 60 [2024-11-06 22:56:52,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:56:52,277 INFO L225 Difference]: With dead ends: 445 [2024-11-06 22:56:52,277 INFO L226 Difference]: Without dead ends: 342 [2024-11-06 22:56:52,281 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=398, Invalid=1672, Unknown=0, NotChecked=0, Total=2070 [2024-11-06 22:56:52,281 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 167 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-06 22:56:52,282 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 391 Invalid, 741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-06 22:56:52,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2024-11-06 22:56:52,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 256. [2024-11-06 22:56:52,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 150 states have (on average 1.2066666666666668) internal successors, (181), 157 states have internal predecessors, (181), 93 states have call successors, (93), 12 states have call predecessors, (93), 12 states have return successors, (92), 86 states have call predecessors, (92), 92 states have call successors, (92) [2024-11-06 22:56:52,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 366 transitions. [2024-11-06 22:56:52,366 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 366 transitions. Word has length 60 [2024-11-06 22:56:52,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:56:52,367 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 366 transitions. [2024-11-06 22:56:52,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 20 states have internal predecessors, (43), 6 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-06 22:56:52,367 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 366 transitions. [2024-11-06 22:56:52,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-06 22:56:52,368 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:56:52,368 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 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] [2024-11-06 22:56:52,384 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-06 22:56:52,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:56:52,572 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:56:52,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:56:52,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1607561902, now seen corresponding path program 1 times [2024-11-06 22:56:52,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:56:52,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842993322] [2024-11-06 22:56:52,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:56:52,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:56:52,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 22:56:52,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1613543823] [2024-11-06 22:56:52,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:56:52,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:56:52,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:56:52,596 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:56:52,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-06 22:56:52,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:52,643 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-06 22:56:52,644 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:56:52,710 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2024-11-06 22:56:52,711 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:56:52,781 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-11-06 22:56:52,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:56:52,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842993322] [2024-11-06 22:56:52,781 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 22:56:52,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613543823] [2024-11-06 22:56:52,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613543823] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-06 22:56:52,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 22:56:52,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-11-06 22:56:52,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165168390] [2024-11-06 22:56:52,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 22:56:52,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 22:56:52,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:56:52,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 22:56:52,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-06 22:56:52,782 INFO L87 Difference]: Start difference. First operand 256 states and 366 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-06 22:56:52,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:56:52,897 INFO L93 Difference]: Finished difference Result 262 states and 371 transitions. [2024-11-06 22:56:52,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 22:56:52,898 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 70 [2024-11-06 22:56:52,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:56:52,900 INFO L225 Difference]: With dead ends: 262 [2024-11-06 22:56:52,900 INFO L226 Difference]: Without dead ends: 260 [2024-11-06 22:56:52,900 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 131 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-06 22:56:52,901 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 4 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 22:56:52,901 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 127 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 22:56:52,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2024-11-06 22:56:52,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 260. [2024-11-06 22:56:52,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 153 states have (on average 1.2026143790849673) internal successors, (184), 160 states have internal predecessors, (184), 93 states have call successors, (93), 13 states have call predecessors, (93), 13 states have return successors, (92), 86 states have call predecessors, (92), 92 states have call successors, (92) [2024-11-06 22:56:52,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 369 transitions. [2024-11-06 22:56:52,975 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 369 transitions. Word has length 70 [2024-11-06 22:56:52,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:56:52,976 INFO L471 AbstractCegarLoop]: Abstraction has 260 states and 369 transitions. [2024-11-06 22:56:52,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-06 22:56:52,976 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 369 transitions. [2024-11-06 22:56:52,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-06 22:56:52,977 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:56:52,977 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2024-11-06 22:56:52,989 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-06 22:56:53,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:56:53,178 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:56:53,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:56:53,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1439093215, now seen corresponding path program 1 times [2024-11-06 22:56:53,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:56:53,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389774423] [2024-11-06 22:56:53,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:56:53,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:56:53,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:53,428 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 22:56:53,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:53,432 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 22:56:53,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:53,459 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-06 22:56:53,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:53,464 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-06 22:56:53,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:53,469 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-06 22:56:53,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:53,475 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-06 22:56:53,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:53,485 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-06 22:56:53,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:53,496 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-06 22:56:53,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:53,504 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-06 22:56:53,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:56:53,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389774423] [2024-11-06 22:56:53,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389774423] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:56:53,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084964403] [2024-11-06 22:56:53,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:56:53,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:56:53,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:56:53,507 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:56:53,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-06 22:56:53,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:53,566 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-06 22:56:53,567 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:56:53,697 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 30 proven. 6 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-06 22:56:53,697 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:56:53,845 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-06 22:56:53,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084964403] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:56:53,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:56:53,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2024-11-06 22:56:53,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064775260] [2024-11-06 22:56:53,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:56:53,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-06 22:56:53,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:56:53,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-06 22:56:53,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2024-11-06 22:56:53,847 INFO L87 Difference]: Start difference. First operand 260 states and 369 transitions. Second operand has 21 states, 21 states have (on average 2.761904761904762) internal successors, (58), 19 states have internal predecessors, (58), 7 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 6 states have call predecessors, (19), 6 states have call successors, (19) [2024-11-06 22:56:54,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:56:54,264 INFO L93 Difference]: Finished difference Result 383 states and 541 transitions. [2024-11-06 22:56:54,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-06 22:56:54,265 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.761904761904762) internal successors, (58), 19 states have internal predecessors, (58), 7 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 6 states have call predecessors, (19), 6 states have call successors, (19) Word has length 68 [2024-11-06 22:56:54,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:56:54,268 INFO L225 Difference]: With dead ends: 383 [2024-11-06 22:56:54,268 INFO L226 Difference]: Without dead ends: 247 [2024-11-06 22:56:54,269 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=126, Invalid=524, Unknown=0, NotChecked=0, Total=650 [2024-11-06 22:56:54,269 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 51 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 22:56:54,269 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 426 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 22:56:54,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2024-11-06 22:56:54,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 232. [2024-11-06 22:56:54,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 129 states have (on average 1.1705426356589148) internal successors, (151), 135 states have internal predecessors, (151), 89 states have call successors, (89), 13 states have call predecessors, (89), 13 states have return successors, (88), 83 states have call predecessors, (88), 88 states have call successors, (88) [2024-11-06 22:56:54,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 328 transitions. [2024-11-06 22:56:54,367 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 328 transitions. Word has length 68 [2024-11-06 22:56:54,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:56:54,368 INFO L471 AbstractCegarLoop]: Abstraction has 232 states and 328 transitions. [2024-11-06 22:56:54,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.761904761904762) internal successors, (58), 19 states have internal predecessors, (58), 7 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 6 states have call predecessors, (19), 6 states have call successors, (19) [2024-11-06 22:56:54,368 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 328 transitions. [2024-11-06 22:56:54,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-06 22:56:54,369 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:56:54,369 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 4, 4, 4, 3, 3, 2, 2, 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] [2024-11-06 22:56:54,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-06 22:56:54,569 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,SelfDestructingSolverStorable12 [2024-11-06 22:56:54,570 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:56:54,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:56:54,570 INFO L85 PathProgramCache]: Analyzing trace with hash 160585404, now seen corresponding path program 1 times [2024-11-06 22:56:54,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:56:54,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904935280] [2024-11-06 22:56:54,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:56:54,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:56:54,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 22:56:54,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1146008114] [2024-11-06 22:56:54,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:56:54,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:56:54,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:56:54,589 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:56:54,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-06 22:56:54,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:54,654 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-11-06 22:56:54,656 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:56:55,810 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 36 proven. 32 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2024-11-06 22:56:55,810 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:57:02,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:57:02,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904935280] [2024-11-06 22:57:02,071 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 22:57:02,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146008114] [2024-11-06 22:57:02,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146008114] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:57:02,072 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-06 22:57:02,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2024-11-06 22:57:02,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178622448] [2024-11-06 22:57:02,072 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-06 22:57:02,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-06 22:57:02,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:57:02,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-06 22:57:02,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=1013, Unknown=0, NotChecked=0, Total=1190 [2024-11-06 22:57:02,073 INFO L87 Difference]: Start difference. First operand 232 states and 328 transitions. Second operand has 21 states, 20 states have (on average 1.9) internal successors, (38), 18 states have internal predecessors, (38), 7 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-06 22:57:03,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:57:03,062 INFO L93 Difference]: Finished difference Result 311 states and 437 transitions. [2024-11-06 22:57:03,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-06 22:57:03,063 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 18 states have internal predecessors, (38), 7 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 87 [2024-11-06 22:57:03,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:57:03,065 INFO L225 Difference]: With dead ends: 311 [2024-11-06 22:57:03,065 INFO L226 Difference]: Without dead ends: 308 [2024-11-06 22:57:03,065 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=288, Invalid=1518, Unknown=0, NotChecked=0, Total=1806 [2024-11-06 22:57:03,066 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 89 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-06 22:57:03,069 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 428 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 726 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-06 22:57:03,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2024-11-06 22:57:03,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 303. [2024-11-06 22:57:03,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 167 states have (on average 1.1676646706586826) internal successors, (195), 175 states have internal predecessors, (195), 117 states have call successors, (117), 18 states have call predecessors, (117), 18 states have return successors, (116), 109 states have call predecessors, (116), 116 states have call successors, (116) [2024-11-06 22:57:03,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 428 transitions. [2024-11-06 22:57:03,189 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 428 transitions. Word has length 87 [2024-11-06 22:57:03,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:57:03,189 INFO L471 AbstractCegarLoop]: Abstraction has 303 states and 428 transitions. [2024-11-06 22:57:03,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 18 states have internal predecessors, (38), 7 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-06 22:57:03,189 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 428 transitions. [2024-11-06 22:57:03,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-06 22:57:03,190 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:57:03,191 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:57:03,205 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 22:57:03,391 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,SelfDestructingSolverStorable13 [2024-11-06 22:57:03,391 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:57:03,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:57:03,392 INFO L85 PathProgramCache]: Analyzing trace with hash -275231594, now seen corresponding path program 1 times [2024-11-06 22:57:03,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:57:03,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960494093] [2024-11-06 22:57:03,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:57:03,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:57:03,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:03,591 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 22:57:03,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:03,623 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 22:57:03,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:03,627 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-06 22:57:03,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:03,630 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-06 22:57:03,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:03,632 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-06 22:57:03,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:03,636 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-06 22:57:03,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:03,643 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-06 22:57:03,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:03,648 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-06 22:57:03,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:03,653 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-06 22:57:03,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:03,658 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-11-06 22:57:03,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:03,663 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-06 22:57:03,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:03,667 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-06 22:57:03,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:03,671 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-06 22:57:03,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:03,673 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-11-06 22:57:03,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:03,675 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 28 proven. 17 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2024-11-06 22:57:03,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:57:03,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960494093] [2024-11-06 22:57:03,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960494093] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:57:03,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367048459] [2024-11-06 22:57:03,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:57:03,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:57:03,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:57:03,678 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 22:57:03,680 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 22:57:03,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:03,736 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-06 22:57:03,738 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:57:03,888 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 90 proven. 15 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-11-06 22:57:03,889 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:57:04,119 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 28 proven. 17 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2024-11-06 22:57:04,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367048459] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:57:04,119 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:57:04,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2024-11-06 22:57:04,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638149817] [2024-11-06 22:57:04,119 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:57:04,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-06 22:57:04,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:57:04,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-06 22:57:04,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=463, Unknown=0, NotChecked=0, Total=552 [2024-11-06 22:57:04,120 INFO L87 Difference]: Start difference. First operand 303 states and 428 transitions. Second operand has 24 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 24 states have internal predecessors, (56), 10 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (36), 9 states have call predecessors, (36), 10 states have call successors, (36) [2024-11-06 22:57:04,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:57:04,565 INFO L93 Difference]: Finished difference Result 478 states and 674 transitions. [2024-11-06 22:57:04,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-06 22:57:04,566 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 24 states have internal predecessors, (56), 10 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (36), 9 states have call predecessors, (36), 10 states have call successors, (36) Word has length 90 [2024-11-06 22:57:04,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:57:04,569 INFO L225 Difference]: With dead ends: 478 [2024-11-06 22:57:04,569 INFO L226 Difference]: Without dead ends: 313 [2024-11-06 22:57:04,571 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=212, Invalid=844, Unknown=0, NotChecked=0, Total=1056 [2024-11-06 22:57:04,571 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 60 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 22:57:04,572 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 396 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 22:57:04,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2024-11-06 22:57:04,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 301. [2024-11-06 22:57:04,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 173 states have (on average 1.1791907514450868) internal successors, (204), 174 states have internal predecessors, (204), 109 states have call successors, (109), 18 states have call predecessors, (109), 18 states have return successors, (108), 108 states have call predecessors, (108), 108 states have call successors, (108) [2024-11-06 22:57:04,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 421 transitions. [2024-11-06 22:57:04,674 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 421 transitions. Word has length 90 [2024-11-06 22:57:04,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:57:04,674 INFO L471 AbstractCegarLoop]: Abstraction has 301 states and 421 transitions. [2024-11-06 22:57:04,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 24 states have internal predecessors, (56), 10 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (36), 9 states have call predecessors, (36), 10 states have call successors, (36) [2024-11-06 22:57:04,674 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 421 transitions. [2024-11-06 22:57:04,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-06 22:57:04,675 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:57:04,675 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 4, 4, 4, 3, 3, 3, 3, 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] [2024-11-06 22:57:04,690 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 22:57:04,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:57:04,879 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:57:04,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:57:04,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1599365144, now seen corresponding path program 1 times [2024-11-06 22:57:04,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:57:04,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048182738] [2024-11-06 22:57:04,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:57:04,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:57:04,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:05,111 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 22:57:05,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:05,141 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 22:57:05,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:05,143 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-06 22:57:05,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:05,145 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-06 22:57:05,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:05,147 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-06 22:57:05,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:05,150 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-06 22:57:05,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:05,152 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-06 22:57:05,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:05,154 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-06 22:57:05,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:05,157 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-06 22:57:05,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:05,160 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-11-06 22:57:05,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:05,163 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-06 22:57:05,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:05,166 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-06 22:57:05,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:05,169 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-11-06 22:57:05,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:05,171 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 28 proven. 19 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2024-11-06 22:57:05,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:57:05,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048182738] [2024-11-06 22:57:05,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048182738] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:57:05,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698889624] [2024-11-06 22:57:05,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:57:05,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:57:05,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:57:05,173 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 22:57:05,175 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 22:57:05,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:05,232 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-06 22:57:05,234 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:57:05,452 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 58 proven. 19 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2024-11-06 22:57:05,453 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:57:05,693 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 28 proven. 19 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2024-11-06 22:57:05,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698889624] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:57:05,693 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:57:05,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 22 [2024-11-06 22:57:05,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364429417] [2024-11-06 22:57:05,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:57:05,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-06 22:57:05,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:57:05,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-06 22:57:05,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2024-11-06 22:57:05,695 INFO L87 Difference]: Start difference. First operand 301 states and 421 transitions. Second operand has 22 states, 22 states have (on average 2.6363636363636362) internal successors, (58), 22 states have internal predecessors, (58), 11 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (38), 10 states have call predecessors, (38), 11 states have call successors, (38) [2024-11-06 22:57:06,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:57:06,306 INFO L93 Difference]: Finished difference Result 359 states and 495 transitions. [2024-11-06 22:57:06,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-06 22:57:06,307 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.6363636363636362) internal successors, (58), 22 states have internal predecessors, (58), 11 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (38), 10 states have call predecessors, (38), 11 states have call successors, (38) Word has length 90 [2024-11-06 22:57:06,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:57:06,309 INFO L225 Difference]: With dead ends: 359 [2024-11-06 22:57:06,309 INFO L226 Difference]: Without dead ends: 223 [2024-11-06 22:57:06,309 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=259, Invalid=1001, Unknown=0, NotChecked=0, Total=1260 [2024-11-06 22:57:06,310 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 72 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 22:57:06,311 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 462 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 22:57:06,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2024-11-06 22:57:06,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2024-11-06 22:57:06,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 129 states have (on average 1.1550387596899225) internal successors, (149), 130 states have internal predecessors, (149), 77 states have call successors, (77), 16 states have call predecessors, (77), 16 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2024-11-06 22:57:06,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 302 transitions. [2024-11-06 22:57:06,388 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 302 transitions. Word has length 90 [2024-11-06 22:57:06,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:57:06,388 INFO L471 AbstractCegarLoop]: Abstraction has 223 states and 302 transitions. [2024-11-06 22:57:06,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.6363636363636362) internal successors, (58), 22 states have internal predecessors, (58), 11 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (38), 10 states have call predecessors, (38), 11 states have call successors, (38) [2024-11-06 22:57:06,388 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 302 transitions. [2024-11-06 22:57:06,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-06 22:57:06,389 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:57:06,389 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-06 22:57:06,405 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 22:57:06,590 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 22:57:06,590 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:57:06,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:57:06,590 INFO L85 PathProgramCache]: Analyzing trace with hash -733012594, now seen corresponding path program 2 times [2024-11-06 22:57:06,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:57:06,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692310677] [2024-11-06 22:57:06,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:57:06,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:57:06,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:06,831 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 22:57:06,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:06,833 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 22:57:06,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:06,856 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-06 22:57:06,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:06,859 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-06 22:57:06,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:06,861 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-06 22:57:06,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:06,865 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-06 22:57:06,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:06,869 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-06 22:57:06,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:06,873 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-06 22:57:06,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:06,876 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-11-06 22:57:06,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:06,879 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-06 22:57:06,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:06,883 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-06 22:57:06,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:06,887 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-06 22:57:06,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:06,896 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-11-06 22:57:06,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:06,898 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-11-06 22:57:06,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:06,903 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 31 proven. 20 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2024-11-06 22:57:06,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:57:06,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692310677] [2024-11-06 22:57:06,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692310677] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:57:06,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924546165] [2024-11-06 22:57:06,903 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 22:57:06,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:57:06,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:57:06,906 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 22:57:06,908 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 22:57:06,970 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 22:57:06,970 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:57:06,971 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-06 22:57:06,973 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:57:07,145 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 93 proven. 18 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-11-06 22:57:07,146 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:57:07,424 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 31 proven. 20 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2024-11-06 22:57:07,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924546165] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:57:07,425 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:57:07,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 26 [2024-11-06 22:57:07,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648454490] [2024-11-06 22:57:07,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:57:07,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-06 22:57:07,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:57:07,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-06 22:57:07,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=554, Unknown=0, NotChecked=0, Total=650 [2024-11-06 22:57:07,427 INFO L87 Difference]: Start difference. First operand 223 states and 302 transitions. Second operand has 26 states, 26 states have (on average 2.5) internal successors, (65), 24 states have internal predecessors, (65), 10 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (35), 10 states have call predecessors, (35), 10 states have call successors, (35) [2024-11-06 22:57:07,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:57:07,834 INFO L93 Difference]: Finished difference Result 280 states and 365 transitions. [2024-11-06 22:57:07,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-06 22:57:07,835 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.5) internal successors, (65), 24 states have internal predecessors, (65), 10 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (35), 10 states have call predecessors, (35), 10 states have call successors, (35) Word has length 95 [2024-11-06 22:57:07,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:57:07,836 INFO L225 Difference]: With dead ends: 280 [2024-11-06 22:57:07,836 INFO L226 Difference]: Without dead ends: 164 [2024-11-06 22:57:07,836 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 201 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=212, Invalid=910, Unknown=0, NotChecked=0, Total=1122 [2024-11-06 22:57:07,837 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 49 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 22:57:07,837 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 448 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 22:57:07,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2024-11-06 22:57:07,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 158. [2024-11-06 22:57:07,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 98 states have (on average 1.0816326530612246) internal successors, (106), 99 states have internal predecessors, (106), 45 states have call successors, (45), 14 states have call predecessors, (45), 14 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-06 22:57:07,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 195 transitions. [2024-11-06 22:57:07,890 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 195 transitions. Word has length 95 [2024-11-06 22:57:07,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:57:07,891 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 195 transitions. [2024-11-06 22:57:07,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.5) internal successors, (65), 24 states have internal predecessors, (65), 10 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (35), 10 states have call predecessors, (35), 10 states have call successors, (35) [2024-11-06 22:57:07,891 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 195 transitions. [2024-11-06 22:57:07,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-06 22:57:07,895 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:57:07,895 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2024-11-06 22:57:07,912 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 22:57:08,096 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,SelfDestructingSolverStorable16 [2024-11-06 22:57:08,096 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:57:08,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:57:08,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1141584144, now seen corresponding path program 3 times [2024-11-06 22:57:08,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:57:08,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75286572] [2024-11-06 22:57:08,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:57:08,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:57:08,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:08,269 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 22:57:08,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:08,271 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 22:57:08,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:08,297 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-06 22:57:08,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:08,300 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-06 22:57:08,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:08,301 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-06 22:57:08,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:08,303 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-06 22:57:08,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:08,306 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-06 22:57:08,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:08,308 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-06 22:57:08,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:08,310 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-11-06 22:57:08,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:08,313 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-06 22:57:08,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:08,315 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-06 22:57:08,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:08,318 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-06 22:57:08,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:08,320 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-11-06 22:57:08,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:08,321 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 43 proven. 15 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2024-11-06 22:57:08,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:57:08,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75286572] [2024-11-06 22:57:08,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75286572] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:57:08,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224438554] [2024-11-06 22:57:08,322 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-06 22:57:08,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:57:08,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:57:08,324 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 22:57:08,325 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 22:57:08,387 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-06 22:57:08,387 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:57:08,389 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-06 22:57:08,390 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:57:08,588 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 71 proven. 17 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2024-11-06 22:57:08,588 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:57:08,883 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 41 proven. 17 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2024-11-06 22:57:08,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224438554] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:57:08,883 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:57:08,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 15] total 28 [2024-11-06 22:57:08,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407575133] [2024-11-06 22:57:08,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:57:08,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-06 22:57:08,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:57:08,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-06 22:57:08,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=647, Unknown=0, NotChecked=0, Total=756 [2024-11-06 22:57:08,884 INFO L87 Difference]: Start difference. First operand 158 states and 195 transitions. Second operand has 28 states, 28 states have (on average 2.607142857142857) internal successors, (73), 26 states have internal predecessors, (73), 10 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (33), 10 states have call predecessors, (33), 10 states have call successors, (33) [2024-11-06 22:57:09,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:57:09,462 INFO L93 Difference]: Finished difference Result 188 states and 228 transitions. [2024-11-06 22:57:09,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-06 22:57:09,462 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.607142857142857) internal successors, (73), 26 states have internal predecessors, (73), 10 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (33), 10 states have call predecessors, (33), 10 states have call successors, (33) Word has length 95 [2024-11-06 22:57:09,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:57:09,463 INFO L225 Difference]: With dead ends: 188 [2024-11-06 22:57:09,463 INFO L226 Difference]: Without dead ends: 120 [2024-11-06 22:57:09,464 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 199 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=412, Invalid=1568, Unknown=0, NotChecked=0, Total=1980 [2024-11-06 22:57:09,465 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 65 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-06 22:57:09,465 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 592 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-06 22:57:09,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-11-06 22:57:09,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 114. [2024-11-06 22:57:09,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 69 states have (on average 1.0434782608695652) internal successors, (72), 69 states have internal predecessors, (72), 33 states have call successors, (33), 12 states have call predecessors, (33), 11 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-11-06 22:57:09,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 137 transitions. [2024-11-06 22:57:09,499 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 137 transitions. Word has length 95 [2024-11-06 22:57:09,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:57:09,499 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 137 transitions. [2024-11-06 22:57:09,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.607142857142857) internal successors, (73), 26 states have internal predecessors, (73), 10 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (33), 10 states have call predecessors, (33), 10 states have call successors, (33) [2024-11-06 22:57:09,499 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 137 transitions. [2024-11-06 22:57:09,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-06 22:57:09,500 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:57:09,500 INFO L215 NwaCegarLoop]: trace histogram [13, 12, 12, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-06 22:57:09,515 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 22:57:09,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-06 22:57:09,704 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:57:09,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:57:09,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1084123749, now seen corresponding path program 2 times [2024-11-06 22:57:09,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:57:09,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713719653] [2024-11-06 22:57:09,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:57:09,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:57:09,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:09,895 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 22:57:09,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:09,920 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 22:57:09,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:09,923 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-06 22:57:09,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:09,925 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-06 22:57:09,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:09,927 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-06 22:57:09,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:09,930 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-06 22:57:09,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:09,933 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-06 22:57:09,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:09,936 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-06 22:57:09,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:09,939 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-06 22:57:09,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:09,941 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-11-06 22:57:09,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:09,945 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-06 22:57:09,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:09,948 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-06 22:57:09,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:09,951 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-11-06 22:57:09,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:09,954 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-06 22:57:09,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:09,957 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-11-06 22:57:09,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:09,960 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-11-06 22:57:09,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:09,964 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 26 proven. 29 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2024-11-06 22:57:09,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:57:09,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713719653] [2024-11-06 22:57:09,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713719653] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:57:09,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266874969] [2024-11-06 22:57:09,965 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 22:57:09,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:57:09,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:57:09,971 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 22:57:09,972 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 22:57:10,074 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 22:57:10,075 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:57:10,076 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-06 22:57:10,078 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:57:10,303 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 26 proven. 29 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2024-11-06 22:57:10,303 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:57:10,648 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 26 proven. 29 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2024-11-06 22:57:10,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266874969] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:57:10,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:57:10,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2024-11-06 22:57:10,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028603564] [2024-11-06 22:57:10,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:57:10,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-06 22:57:10,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:57:10,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-06 22:57:10,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=513, Unknown=0, NotChecked=0, Total=600 [2024-11-06 22:57:10,650 INFO L87 Difference]: Start difference. First operand 114 states and 137 transitions. Second operand has 25 states, 25 states have (on average 2.52) internal successors, (63), 25 states have internal predecessors, (63), 13 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 11 states have call predecessors, (44), 12 states have call successors, (44) [2024-11-06 22:57:11,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:57:11,025 INFO L93 Difference]: Finished difference Result 125 states and 147 transitions. [2024-11-06 22:57:11,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-06 22:57:11,026 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.52) internal successors, (63), 25 states have internal predecessors, (63), 13 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 11 states have call predecessors, (44), 12 states have call successors, (44) Word has length 104 [2024-11-06 22:57:11,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:57:11,027 INFO L225 Difference]: With dead ends: 125 [2024-11-06 22:57:11,027 INFO L226 Difference]: Without dead ends: 80 [2024-11-06 22:57:11,027 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=199, Invalid=793, Unknown=0, NotChecked=0, Total=992 [2024-11-06 22:57:11,028 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 44 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 22:57:11,028 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 550 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 22:57:11,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-06 22:57:11,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2024-11-06 22:57:11,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 51 states have (on average 1.0196078431372548) internal successors, (52), 51 states have internal predecessors, (52), 21 states have call successors, (21), 8 states have call predecessors, (21), 7 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-06 22:57:11,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 93 transitions. [2024-11-06 22:57:11,053 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 93 transitions. Word has length 104 [2024-11-06 22:57:11,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:57:11,053 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 93 transitions. [2024-11-06 22:57:11,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.52) internal successors, (63), 25 states have internal predecessors, (63), 13 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 11 states have call predecessors, (44), 12 states have call successors, (44) [2024-11-06 22:57:11,053 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 93 transitions. [2024-11-06 22:57:11,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-06 22:57:11,055 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:57:11,055 INFO L215 NwaCegarLoop]: trace histogram [17, 16, 16, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:57:11,061 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 22:57:11,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:57:11,259 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:57:11,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:57:11,259 INFO L85 PathProgramCache]: Analyzing trace with hash 2030427454, now seen corresponding path program 3 times [2024-11-06 22:57:11,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:57:11,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637884398] [2024-11-06 22:57:11,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:57:11,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:57:11,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:11,525 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 22:57:11,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:11,529 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 22:57:11,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:11,553 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-06 22:57:11,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:11,556 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-06 22:57:11,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:11,559 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-06 22:57:11,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:11,564 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-06 22:57:11,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:11,567 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-06 22:57:11,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:11,570 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-06 22:57:11,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:11,572 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-11-06 22:57:11,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:11,575 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-06 22:57:11,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:11,578 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-06 22:57:11,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:11,580 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-06 22:57:11,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:11,583 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-06 22:57:11,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:11,586 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-11-06 22:57:11,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:11,589 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-11-06 22:57:11,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:11,593 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-11-06 22:57:11,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:11,596 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-11-06 22:57:11,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:11,599 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-11-06 22:57:11,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:11,601 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-11-06 22:57:11,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:11,604 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-11-06 22:57:11,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:57:11,608 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 40 proven. 50 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2024-11-06 22:57:11,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:57:11,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637884398] [2024-11-06 22:57:11,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637884398] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:57:11,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657860003] [2024-11-06 22:57:11,608 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-06 22:57:11,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:57:11,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:57:11,611 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 22:57:11,612 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 22:57:11,714 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-06 22:57:11,714 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:57:11,717 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 75 conjuncts are in the unsatisfiable core [2024-11-06 22:57:11,719 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:57:14,094 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 103 proven. 17 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2024-11-06 22:57:14,095 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:57:16,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657860003] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:57:16,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 22:57:16,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 21] total 29 [2024-11-06 22:57:16,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234448410] [2024-11-06 22:57:16,337 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 22:57:16,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-06 22:57:16,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:57:16,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-06 22:57:16,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=1222, Unknown=0, NotChecked=0, Total=1406 [2024-11-06 22:57:16,339 INFO L87 Difference]: Start difference. First operand 80 states and 93 transitions. Second operand has 29 states, 28 states have (on average 2.3214285714285716) internal successors, (65), 26 states have internal predecessors, (65), 10 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (29), 10 states have call predecessors, (29), 8 states have call successors, (29) [2024-11-06 22:57:17,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:57:17,307 INFO L93 Difference]: Finished difference Result 84 states and 96 transitions. [2024-11-06 22:57:17,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-06 22:57:17,307 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.3214285714285716) internal successors, (65), 26 states have internal predecessors, (65), 10 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (29), 10 states have call predecessors, (29), 8 states have call successors, (29) Word has length 131 [2024-11-06 22:57:17,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:57:17,309 INFO L225 Difference]: With dead ends: 84 [2024-11-06 22:57:17,310 INFO L226 Difference]: Without dead ends: 0 [2024-11-06 22:57:17,310 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 474 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=392, Invalid=1960, Unknown=0, NotChecked=0, Total=2352 [2024-11-06 22:57:17,311 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 37 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-06 22:57:17,311 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 273 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-06 22:57:17,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-06 22:57:17,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-06 22:57:17,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:57:17,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-06 22:57:17,312 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 131 [2024-11-06 22:57:17,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:57:17,312 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-06 22:57:17,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.3214285714285716) internal successors, (65), 26 states have internal predecessors, (65), 10 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (29), 10 states have call predecessors, (29), 8 states have call successors, (29) [2024-11-06 22:57:17,312 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-06 22:57:17,312 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-06 22:57:17,315 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-06 22:57:17,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-06 22:57:17,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:57:17,522 INFO L407 BasicCegarLoop]: Path program histogram: [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:57:17,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-06 22:57:20,090 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-06 22:57:20,122 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:57:20 BoogieIcfgContainer [2024-11-06 22:57:20,122 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-06 22:57:20,122 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-06 22:57:20,122 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-06 22:57:20,123 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-06 22:57:20,123 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:56:40" (3/4) ... [2024-11-06 22:57:20,125 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-06 22:57:20,130 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-11-06 22:57:20,130 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-06 22:57:20,133 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-11-06 22:57:20,134 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-06 22:57:20,134 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-06 22:57:20,135 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-06 22:57:20,208 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-06 22:57:20,209 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-06 22:57:20,209 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-06 22:57:20,210 INFO L158 Benchmark]: Toolchain (without parser) took 39767.75ms. Allocated memory was 100.7MB in the beginning and 310.4MB in the end (delta: 209.7MB). Free memory was 77.1MB in the beginning and 225.5MB in the end (delta: -148.4MB). Peak memory consumption was 57.0MB. Max. memory is 16.1GB. [2024-11-06 22:57:20,210 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 83.9MB. Free memory is still 47.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-06 22:57:20,210 INFO L158 Benchmark]: CACSL2BoogieTranslator took 223.45ms. Allocated memory is still 100.7MB. Free memory was 77.0MB in the beginning and 65.6MB in the end (delta: 11.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-06 22:57:20,210 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.90ms. Allocated memory is still 100.7MB. Free memory was 65.4MB in the beginning and 64.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-06 22:57:20,211 INFO L158 Benchmark]: Boogie Preprocessor took 26.59ms. Allocated memory is still 100.7MB. Free memory was 64.2MB in the beginning and 62.9MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-06 22:57:20,211 INFO L158 Benchmark]: RCFGBuilder took 255.58ms. Allocated memory is still 100.7MB. Free memory was 62.9MB in the beginning and 52.0MB in the end (delta: 10.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-06 22:57:20,211 INFO L158 Benchmark]: TraceAbstraction took 39146.33ms. Allocated memory was 100.7MB in the beginning and 310.4MB in the end (delta: 209.7MB). Free memory was 51.4MB in the beginning and 230.6MB in the end (delta: -179.2MB). Peak memory consumption was 108.7MB. Max. memory is 16.1GB. [2024-11-06 22:57:20,211 INFO L158 Benchmark]: Witness Printer took 86.66ms. Allocated memory is still 310.4MB. Free memory was 230.6MB in the beginning and 225.5MB in the end (delta: 5.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-06 22:57:20,214 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 83.9MB. Free memory is still 47.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 223.45ms. Allocated memory is still 100.7MB. Free memory was 77.0MB in the beginning and 65.6MB in the end (delta: 11.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.90ms. Allocated memory is still 100.7MB. Free memory was 65.4MB in the beginning and 64.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 26.59ms. Allocated memory is still 100.7MB. Free memory was 64.2MB in the beginning and 62.9MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 255.58ms. Allocated memory is still 100.7MB. Free memory was 62.9MB in the beginning and 52.0MB in the end (delta: 10.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 39146.33ms. Allocated memory was 100.7MB in the beginning and 310.4MB in the end (delta: 209.7MB). Free memory was 51.4MB in the beginning and 230.6MB in the end (delta: -179.2MB). Peak memory consumption was 108.7MB. Max. memory is 16.1GB. * Witness Printer took 86.66ms. Allocated memory is still 310.4MB. Free memory was 230.6MB in the beginning and 225.5MB in the end (delta: 5.1MB). There was no memory consumed. 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: 13]: 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, 35 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 36.5s, OverallIterations: 20, TraceHistogramMax: 17, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 9.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 912 SdHoareTripleChecker+Valid, 4.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 831 mSDsluCounter, 5598 SdHoareTripleChecker+Invalid, 4.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4796 mSDsCounter, 607 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4437 IncrementalHoareTripleChecker+Invalid, 5044 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 607 mSolverCounterUnsat, 802 mSDtfsCounter, 4437 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2434 GetRequests, 2033 SyntacticMatches, 14 SemanticMatches, 387 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2631 ImplicationChecksByTransitivity, 15.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=303occurred in iteration=14, InterpolantAutomatonStates: 233, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 20 MinimizatonAttempts, 201 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 20.7s InterpolantComputationTime, 2438 NumberOfCodeBlocks, 2344 NumberOfCodeBlocksAsserted, 45 NumberOfCheckSat, 2685 ConstructedInterpolants, 0 QuantifiedInterpolants, 11716 SizeOfPredicates, 55 NumberOfNonLiveVariables, 2729 ConjunctsInSsa, 384 ConjunctsInUnsatCore, 38 InterpolantComputations, 8 PerfectInterpolantSequences, 5580/6048 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: 42]: Loop Invariant Derived loop invariant: (((((((((((((((c == 0) && (b == 1)) && (p == 1)) && (r == 0)) && (q == 0)) && (y == 1)) && (1 <= x)) && (k == x)) && (a == x)) && (x <= 2)) && (s == 1)) || ((((((((((c == 0) && (b == 1)) && (p == 0)) && (2 == y)) && (x == 1)) && (q == 1)) && (s == 0)) && (r == 1)) && (2 == a)) && (2 == k))) || (((((((((((c == 0) && (k == 1)) && (p == 1)) && (b == y)) && (b == x)) && (r == 0)) && (q == 0)) && (1 <= x)) && (a == x)) && (x <= 2)) && (s == 1))) || ((((((((((b == 1) && (p == 0)) && (2 == y)) && (x == 1)) && (q == 1)) && (k == 0)) && (s == 0)) && (r == 1)) && (2 == a)) && (2 == c))) || ((((((((((((p == 1) && (1 <= y)) && (a == c)) && (b == y)) && (b <= 2)) && (r == 0)) && (q == 0)) && (k == 0)) && (1 <= x)) && (a == x)) && (x <= 2)) && (s == 1))) - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: ((((((((((((((((d == 1) && (b == 1)) && (p == 0)) && (v == 1)) && (2 == y)) && (x == 1)) && (q == 1)) && (k == 0)) && (s == 0)) && (r == 1)) && (2 == a)) && (2 == c)) || ((((((((((((b == 1) && (p == 0)) && (2 == v)) && (2 == y)) && (x == 1)) && (q == 1)) && (k == 0)) && (s == 0)) && (r == 1)) && (2 == a)) && (2 == c)) && (2 == d))) || (((((((((((((b == 1) && (p == 0)) && (v <= 1)) && (2 == y)) && (x == 1)) && (q == 1)) && (d == v)) && (k == 0)) && (s == 0)) && (r == 1)) && (2 == a)) && (2 == c)) && (((d >= 0) ? (d % 2) : ((d % 2) + 2)) == 0))) || (((((((((((((p == 1) && ((y + ((__int128) d * y)) == ((__int128) b + x))) && (((__int128) b * d) == v)) && (b == y)) && (v <= c)) && (r == 0)) && (q == 0)) && (k == 0)) && (1 <= x)) && (c <= 2)) && (((__int128) 2 * b) == v)) && (a == x)) && (s == 1))) || (((((((((((((d == 1) && (p == 1)) && (1 <= y)) && (a == c)) && (b == y)) && (b == v)) && (r == 0)) && (q == 0)) && (k == 0)) && (b <= c)) && (a == x)) && (x <= 2)) && (s == 1))) - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (((((((((((b == 1) && (p == 0)) && (2 == y)) && (x == 1)) && (q == 1)) && (s == 0)) && (r == 1)) && (2 == a)) || ((((((((((1 <= p) && ((s + ((__int128) 2 * r)) == 1)) && (y <= 2)) && (b == 0)) && (0 <= r)) && (1 <= a)) && (1 <= x)) && ((q + ((__int128) 2 * p)) == 0)) && ((((__int128) r * y) + ((__int128) p * x)) == a)) && (((__int128) a + 1) <= y))) || (((((((((y == ((a + ((__int128) s * y)) + ((__int128) q * x))) && (p == 0)) && (a == y)) && (a <= 2)) && (b == 0)) && (1 <= a)) && (1 <= x)) && (r == 1)) && (x <= 2))) || ((((((((((p == 1) && (b == y)) && (b <= 2)) && (1 <= b)) && (r == 0)) && (q == 0)) && (1 <= x)) && (a == x)) && (x <= 2)) && (s == 1))) - ProcedureContractResult [Line: 7]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (cond != 0) - ProcedureContractResult [Line: 10]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= cond) Ensures: (1 <= cond) RESULT: Ultimate proved your program to be correct! [2024-11-06 22:57:20,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE