./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound1.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_valuebound1.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', '40c004ecbeb3948e318f4c5fc8011bd289b059bb9dbb2959c45853a9680cf20f'] 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_valuebound1.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 40c004ecbeb3948e318f4c5fc8011bd289b059bb9dbb2959c45853a9680cf20f --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-06 22:56:19,600 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 22:56:19,680 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-06 22:56:19,684 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 22:56:19,685 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 22:56:19,715 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 22:56:19,718 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 22:56:19,718 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 22:56:19,719 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 22:56:19,719 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 22:56:19,719 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 22:56:19,719 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 22:56:19,719 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 22:56:19,719 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 22:56:19,719 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 22:56:19,719 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 22:56:19,720 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 22:56:19,720 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-06 22:56:19,720 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-06 22:56:19,720 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-06 22:56:19,720 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 22:56:19,720 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 22:56:19,720 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 22:56:19,720 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 22:56:19,720 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 22:56:19,720 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-06 22:56:19,720 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 22:56:19,720 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 22:56:19,720 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 22:56:19,720 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 22:56:19,721 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 22:56:19,721 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 22:56:19,721 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 22:56:19,721 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 22:56:19,721 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 22:56:19,721 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 22:56:19,723 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-06 22:56:19,723 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-06 22:56:19,723 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 22:56:19,724 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 22:56:19,724 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 22:56:19,724 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 22:56:19,724 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 -> 40c004ecbeb3948e318f4c5fc8011bd289b059bb9dbb2959c45853a9680cf20f [2024-11-06 22:56:19,977 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 22:56:19,988 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 22:56:19,990 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 22:56:19,991 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 22:56:19,991 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 22:56:19,993 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound1.c [2024-11-06 22:56:21,231 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 22:56:21,493 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 22:56:21,497 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound1.c [2024-11-06 22:56:21,505 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/51a6dd9d4/948a580c7bd24f2f9090d9fca9193b82/FLAG78a08ff6e [2024-11-06 22:56:21,820 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/51a6dd9d4/948a580c7bd24f2f9090d9fca9193b82 [2024-11-06 22:56:21,822 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 22:56:21,823 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-06 22:56:21,824 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 22:56:21,824 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 22:56:21,827 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 22:56:21,827 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:56:21" (1/1) ... [2024-11-06 22:56:21,828 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d9e11e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:21, skipping insertion in model container [2024-11-06 22:56:21,828 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:56:21" (1/1) ... [2024-11-06 22:56:21,838 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 22:56:21,960 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_valuebound1.c[490,503] [2024-11-06 22:56:21,982 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 22:56:21,992 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 22:56:22,001 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_valuebound1.c[490,503] [2024-11-06 22:56:22,008 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 22:56:22,020 INFO L204 MainTranslator]: Completed translation [2024-11-06 22:56:22,020 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:22 WrapperNode [2024-11-06 22:56:22,021 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 22:56:22,021 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 22:56:22,023 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 22:56:22,023 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 22:56:22,028 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:22" (1/1) ... [2024-11-06 22:56:22,033 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:22" (1/1) ... [2024-11-06 22:56:22,048 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 83 [2024-11-06 22:56:22,049 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 22:56:22,050 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 22:56:22,050 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 22:56:22,050 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 22:56:22,059 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:22" (1/1) ... [2024-11-06 22:56:22,059 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:22" (1/1) ... [2024-11-06 22:56:22,065 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:22" (1/1) ... [2024-11-06 22:56:22,082 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 22:56:22,082 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:22" (1/1) ... [2024-11-06 22:56:22,083 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:22" (1/1) ... [2024-11-06 22:56:22,087 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:22" (1/1) ... [2024-11-06 22:56:22,092 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:22" (1/1) ... [2024-11-06 22:56:22,097 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:22" (1/1) ... [2024-11-06 22:56:22,097 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:22" (1/1) ... [2024-11-06 22:56:22,098 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 22:56:22,099 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 22:56:22,103 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 22:56:22,103 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 22:56:22,104 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:22" (1/1) ... [2024-11-06 22:56:22,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 22:56:22,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:56:22,136 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 22:56:22,139 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 22:56:22,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 22:56:22,163 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-06 22:56:22,163 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-06 22:56:22,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-06 22:56:22,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 22:56:22,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 22:56:22,164 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-06 22:56:22,164 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-06 22:56:22,216 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 22:56:22,218 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 22:56:22,328 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-11-06 22:56:22,329 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 22:56:22,338 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 22:56:22,338 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-06 22:56:22,338 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:56:22 BoogieIcfgContainer [2024-11-06 22:56:22,339 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 22:56:22,341 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 22:56:22,341 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 22:56:22,346 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 22:56:22,346 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:56:21" (1/3) ... [2024-11-06 22:56:22,346 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@df037bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:56:22, skipping insertion in model container [2024-11-06 22:56:22,347 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:22" (2/3) ... [2024-11-06 22:56:22,347 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@df037bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:56:22, skipping insertion in model container [2024-11-06 22:56:22,347 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:56:22" (3/3) ... [2024-11-06 22:56:22,348 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd3-ll_valuebound1.c [2024-11-06 22:56:22,362 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 22:56:22,362 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-06 22:56:22,407 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 22:56:22,416 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;@2ff58a0e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 22:56:22,416 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-06 22:56:22,422 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 22:56:22,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-06 22:56:22,427 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:56:22,428 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 22:56:22,428 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:56:22,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:56:22,431 INFO L85 PathProgramCache]: Analyzing trace with hash 872320404, now seen corresponding path program 1 times [2024-11-06 22:56:22,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:56:22,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261435289] [2024-11-06 22:56:22,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:56:22,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:56:22,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:22,564 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 22:56:22,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:22,573 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 22:56:22,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:22,586 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-06 22:56:22,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:22,591 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-06 22:56:22,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:22,603 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 22:56:22,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:56:22,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261435289] [2024-11-06 22:56:22,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261435289] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 22:56:22,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 22:56:22,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 22:56:22,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804090856] [2024-11-06 22:56:22,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 22:56:22,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-06 22:56:22,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:56:22,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-06 22:56:22,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-06 22:56:22,634 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 22:56:22,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:56:22,655 INFO L93 Difference]: Finished difference Result 67 states and 109 transitions. [2024-11-06 22:56:22,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-06 22:56:22,657 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 22:56:22,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:56:22,664 INFO L225 Difference]: With dead ends: 67 [2024-11-06 22:56:22,664 INFO L226 Difference]: Without dead ends: 31 [2024-11-06 22:56:22,667 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 22:56:22,669 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 22:56:22,670 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 22:56:22,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-06 22:56:22,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-11-06 22:56:22,699 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 22:56:22,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 40 transitions. [2024-11-06 22:56:22,706 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 40 transitions. Word has length 29 [2024-11-06 22:56:22,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:56:22,707 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 40 transitions. [2024-11-06 22:56:22,707 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 22:56:22,708 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 40 transitions. [2024-11-06 22:56:22,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-06 22:56:22,709 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:56:22,710 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 22:56:22,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-06 22:56:22,710 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:56:22,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:56:22,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1714405113, now seen corresponding path program 1 times [2024-11-06 22:56:22,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:56:22,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181494661] [2024-11-06 22:56:22,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:56:22,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:56:22,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:22,970 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 22:56:22,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:22,980 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 22:56:22,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:22,988 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-06 22:56:22,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:22,992 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-06 22:56:22,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:23,042 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 22:56:23,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:56:23,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181494661] [2024-11-06 22:56:23,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181494661] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 22:56:23,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 22:56:23,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-06 22:56:23,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770107915] [2024-11-06 22:56:23,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 22:56:23,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-06 22:56:23,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:56:23,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-06 22:56:23,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-06 22:56:23,047 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 22:56:23,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:56:23,145 INFO L93 Difference]: Finished difference Result 50 states and 65 transitions. [2024-11-06 22:56:23,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-06 22:56:23,146 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 22:56:23,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:56:23,147 INFO L225 Difference]: With dead ends: 50 [2024-11-06 22:56:23,147 INFO L226 Difference]: Without dead ends: 43 [2024-11-06 22:56:23,147 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 22:56:23,148 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 22:56:23,148 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 22:56:23,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-06 22:56:23,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 33. [2024-11-06 22:56:23,156 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 22:56:23,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2024-11-06 22:56:23,157 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 30 [2024-11-06 22:56:23,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:56:23,158 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2024-11-06 22:56:23,158 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 22:56:23,158 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2024-11-06 22:56:23,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-06 22:56:23,159 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:56:23,159 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 22:56:23,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-06 22:56:23,159 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:56:23,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:56:23,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1825736765, now seen corresponding path program 1 times [2024-11-06 22:56:23,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:56:23,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63676224] [2024-11-06 22:56:23,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:56:23,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:56:23,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 22:56:23,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1671474404] [2024-11-06 22:56:23,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:56:23,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:56:23,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:56:23,201 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 22:56:23,202 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 22:56:23,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:23,269 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-06 22:56:23,273 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:56:23,405 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 22:56:23,406 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 22:56:23,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:56:23,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63676224] [2024-11-06 22:56:23,407 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 22:56:23,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671474404] [2024-11-06 22:56:23,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671474404] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 22:56:23,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 22:56:23,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-06 22:56:23,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826148916] [2024-11-06 22:56:23,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 22:56:23,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 22:56:23,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:56:23,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 22:56:23,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 22:56:23,408 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 22:56:23,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:56:23,463 INFO L93 Difference]: Finished difference Result 49 states and 63 transitions. [2024-11-06 22:56:23,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 22:56:23,463 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 22:56:23,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:56:23,464 INFO L225 Difference]: With dead ends: 49 [2024-11-06 22:56:23,464 INFO L226 Difference]: Without dead ends: 47 [2024-11-06 22:56:23,464 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 22:56:23,465 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 22:56:23,465 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 22:56:23,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-06 22:56:23,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2024-11-06 22:56:23,479 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 22:56:23,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 60 transitions. [2024-11-06 22:56:23,482 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 60 transitions. Word has length 33 [2024-11-06 22:56:23,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:56:23,483 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 60 transitions. [2024-11-06 22:56:23,483 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 22:56:23,483 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 60 transitions. [2024-11-06 22:56:23,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-06 22:56:23,485 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:56:23,485 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 22:56:23,502 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-06 22:56:23,685 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 22:56:23,686 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:56:23,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:56:23,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1547103247, now seen corresponding path program 1 times [2024-11-06 22:56:23,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:56:23,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289592519] [2024-11-06 22:56:23,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:56:23,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:56:23,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:23,853 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 22:56:23,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:23,857 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 22:56:23,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:23,861 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-06 22:56:23,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:23,898 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-06 22:56:23,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:23,902 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 22:56:23,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:56:23,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289592519] [2024-11-06 22:56:23,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289592519] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:56:23,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54119927] [2024-11-06 22:56:23,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:56:23,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:56:23,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:56:23,905 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 22:56:23,907 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 22:56:23,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:23,961 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-06 22:56:23,962 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:56:24,026 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 22:56:24,026 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:56:24,132 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 22:56:24,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54119927] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:56:24,132 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:56:24,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2024-11-06 22:56:24,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686181065] [2024-11-06 22:56:24,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:56:24,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-06 22:56:24,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:56:24,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-06 22:56:24,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-11-06 22:56:24,133 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 22:56:24,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:56:24,332 INFO L93 Difference]: Finished difference Result 99 states and 139 transitions. [2024-11-06 22:56:24,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-06 22:56:24,333 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 22:56:24,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:56:24,334 INFO L225 Difference]: With dead ends: 99 [2024-11-06 22:56:24,336 INFO L226 Difference]: Without dead ends: 92 [2024-11-06 22:56:24,336 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 22:56:24,337 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 22:56:24,337 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 22:56:24,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-06 22:56:24,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 67. [2024-11-06 22:56:24,369 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 22:56:24,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 91 transitions. [2024-11-06 22:56:24,374 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 91 transitions. Word has length 35 [2024-11-06 22:56:24,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:56:24,374 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 91 transitions. [2024-11-06 22:56:24,374 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 22:56:24,374 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 91 transitions. [2024-11-06 22:56:24,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-06 22:56:24,375 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:56:24,375 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 22:56:24,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-06 22:56:24,575 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 22:56:24,576 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:56:24,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:56:24,576 INFO L85 PathProgramCache]: Analyzing trace with hash -720434099, now seen corresponding path program 1 times [2024-11-06 22:56:24,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:56:24,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416992396] [2024-11-06 22:56:24,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:56:24,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:56:24,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 22:56:24,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [982483465] [2024-11-06 22:56:24,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:56:24,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:56:24,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:56:24,597 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 22:56:24,599 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 22:56:24,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:24,650 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-06 22:56:24,652 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:56:24,729 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 22:56:24,732 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 22:56:24,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:56:24,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416992396] [2024-11-06 22:56:24,732 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 22:56:24,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982483465] [2024-11-06 22:56:24,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982483465] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 22:56:24,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 22:56:24,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-06 22:56:24,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067900926] [2024-11-06 22:56:24,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 22:56:24,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 22:56:24,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:56:24,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 22:56:24,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 22:56:24,733 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 22:56:24,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:56:24,791 INFO L93 Difference]: Finished difference Result 75 states and 98 transitions. [2024-11-06 22:56:24,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 22:56:24,792 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 22:56:24,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:56:24,793 INFO L225 Difference]: With dead ends: 75 [2024-11-06 22:56:24,793 INFO L226 Difference]: Without dead ends: 73 [2024-11-06 22:56:24,793 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 22:56:24,794 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 22:56:24,795 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 22:56:24,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-06 22:56:24,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2024-11-06 22:56:24,815 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 22:56:24,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 94 transitions. [2024-11-06 22:56:24,816 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 94 transitions. Word has length 38 [2024-11-06 22:56:24,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:56:24,816 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 94 transitions. [2024-11-06 22:56:24,816 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 22:56:24,816 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 94 transitions. [2024-11-06 22:56:24,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-06 22:56:24,817 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:56:24,817 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 22:56:24,834 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 22:56:25,017 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 22:56:25,018 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:56:25,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:56:25,018 INFO L85 PathProgramCache]: Analyzing trace with hash -376152117, now seen corresponding path program 1 times [2024-11-06 22:56:25,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:56:25,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443991814] [2024-11-06 22:56:25,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:56:25,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:56:25,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:25,157 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 22:56:25,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:25,160 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 22:56:25,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:25,186 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-06 22:56:25,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:25,197 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-06 22:56:25,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:25,201 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-06 22:56:25,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:56:25,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443991814] [2024-11-06 22:56:25,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443991814] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:56:25,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166205705] [2024-11-06 22:56:25,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:56:25,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:56:25,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:56:25,203 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 22:56:25,204 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 22:56:25,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:25,249 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-06 22:56:25,251 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:56:25,347 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-06 22:56:25,347 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:56:25,453 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-06 22:56:25,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166205705] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:56:25,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:56:25,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2024-11-06 22:56:25,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918977752] [2024-11-06 22:56:25,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:56:25,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-06 22:56:25,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:56:25,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-06 22:56:25,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-11-06 22:56:25,455 INFO L87 Difference]: Start difference. First operand 71 states and 94 transitions. Second operand has 13 states, 11 states have (on average 2.727272727272727) internal successors, (30), 9 states have internal predecessors, (30), 6 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-06 22:56:25,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:56:25,662 INFO L93 Difference]: Finished difference Result 98 states and 132 transitions. [2024-11-06 22:56:25,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-06 22:56:25,662 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.727272727272727) internal successors, (30), 9 states have internal predecessors, (30), 6 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 38 [2024-11-06 22:56:25,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:56:25,663 INFO L225 Difference]: With dead ends: 98 [2024-11-06 22:56:25,663 INFO L226 Difference]: Without dead ends: 60 [2024-11-06 22:56:25,663 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 76 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-11-06 22:56:25,664 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 56 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:56:25,664 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 163 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:56:25,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-06 22:56:25,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 52. [2024-11-06 22:56:25,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 35 states have internal predecessors, (40), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-06 22:56:25,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 65 transitions. [2024-11-06 22:56:25,673 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 65 transitions. Word has length 38 [2024-11-06 22:56:25,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:56:25,674 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 65 transitions. [2024-11-06 22:56:25,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.727272727272727) internal successors, (30), 9 states have internal predecessors, (30), 6 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-06 22:56:25,674 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 65 transitions. [2024-11-06 22:56:25,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-06 22:56:25,675 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:56:25,675 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 22:56:25,690 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 22:56:25,878 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 22:56:25,879 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:56:25,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:56:25,879 INFO L85 PathProgramCache]: Analyzing trace with hash 279172547, now seen corresponding path program 1 times [2024-11-06 22:56:25,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:56:25,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110264442] [2024-11-06 22:56:25,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:56:25,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:56:25,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 22:56:25,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [235427580] [2024-11-06 22:56:25,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:56:25,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:56:25,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:56:25,895 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 22:56:25,896 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 22:56:25,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:25,947 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-06 22:56:25,949 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:56:25,988 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 22:56:25,988 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 22:56:25,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:56:25,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110264442] [2024-11-06 22:56:25,989 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 22:56:25,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235427580] [2024-11-06 22:56:25,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235427580] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 22:56:25,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 22:56:25,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-06 22:56:25,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147376937] [2024-11-06 22:56:25,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 22:56:25,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 22:56:25,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:56:25,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 22:56:25,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 22:56:25,990 INFO L87 Difference]: Start difference. First operand 52 states and 65 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 22:56:26,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:56:26,050 INFO L93 Difference]: Finished difference Result 75 states and 98 transitions. [2024-11-06 22:56:26,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 22:56:26,051 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 22:56:26,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:56:26,052 INFO L225 Difference]: With dead ends: 75 [2024-11-06 22:56:26,052 INFO L226 Difference]: Without dead ends: 73 [2024-11-06 22:56:26,052 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 22:56:26,053 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 6 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 22:56:26,055 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 130 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 22:56:26,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-06 22:56:26,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 70. [2024-11-06 22:56:26,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 43 states have (on average 1.2093023255813953) internal successors, (52), 44 states have internal predecessors, (52), 21 states have call successors, (21), 5 states have call predecessors, (21), 5 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-06 22:56:26,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 93 transitions. [2024-11-06 22:56:26,075 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 93 transitions. Word has length 43 [2024-11-06 22:56:26,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:56:26,076 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 93 transitions. [2024-11-06 22:56:26,076 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 22:56:26,076 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 93 transitions. [2024-11-06 22:56:26,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-06 22:56:26,077 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:56:26,077 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 22:56:26,094 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 22:56:26,281 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 22:56:26,282 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:56:26,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:56:26,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1189241395, now seen corresponding path program 1 times [2024-11-06 22:56:26,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:56:26,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82016465] [2024-11-06 22:56:26,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:56:26,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:56:26,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 22:56:26,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1894127217] [2024-11-06 22:56:26,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:56:26,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:56:26,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:56:26,303 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 22:56:26,305 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 22:56:26,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:26,355 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-06 22:56:26,357 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:56:26,397 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 22:56:26,397 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 22:56:26,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:56:26,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82016465] [2024-11-06 22:56:26,397 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 22:56:26,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894127217] [2024-11-06 22:56:26,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894127217] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 22:56:26,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 22:56:26,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-06 22:56:26,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442376258] [2024-11-06 22:56:26,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 22:56:26,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 22:56:26,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:56:26,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 22:56:26,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 22:56:26,399 INFO L87 Difference]: Start difference. First operand 70 states and 93 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 22:56:26,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:56:26,451 INFO L93 Difference]: Finished difference Result 102 states and 144 transitions. [2024-11-06 22:56:26,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 22:56:26,451 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 22:56:26,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:56:26,452 INFO L225 Difference]: With dead ends: 102 [2024-11-06 22:56:26,452 INFO L226 Difference]: Without dead ends: 100 [2024-11-06 22:56:26,453 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 22:56:26,453 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 22:56:26,453 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 22:56:26,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-06 22:56:26,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 94. [2024-11-06 22:56:26,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 50 states have (on average 1.18) internal successors, (59), 55 states have internal predecessors, (59), 37 states have call successors, (37), 6 states have call predecessors, (37), 6 states have return successors, (36), 32 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-06 22:56:26,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 132 transitions. [2024-11-06 22:56:26,474 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 132 transitions. Word has length 48 [2024-11-06 22:56:26,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:56:26,474 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 132 transitions. [2024-11-06 22:56:26,475 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 22:56:26,475 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 132 transitions. [2024-11-06 22:56:26,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-06 22:56:26,476 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:56:26,476 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 22:56:26,491 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 22:56:26,676 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 22:56:26,676 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:56:26,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:56:26,677 INFO L85 PathProgramCache]: Analyzing trace with hash -828341661, now seen corresponding path program 1 times [2024-11-06 22:56:26,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:56:26,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299258294] [2024-11-06 22:56:26,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:56:26,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:56:26,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 22:56:26,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [551859468] [2024-11-06 22:56:26,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:56:26,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:56:26,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:56:26,704 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 22:56:26,706 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 22:56:26,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:26,759 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-06 22:56:26,762 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:56:27,606 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 14 proven. 10 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-06 22:56:27,606 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:56:29,118 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-06 22:56:29,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:56:29,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299258294] [2024-11-06 22:56:29,118 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 22:56:29,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551859468] [2024-11-06 22:56:29,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551859468] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:56:29,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 22:56:29,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 27 [2024-11-06 22:56:29,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213351342] [2024-11-06 22:56:29,119 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 22:56:29,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-06 22:56:29,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:56:29,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-06 22:56:29,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2024-11-06 22:56:29,120 INFO L87 Difference]: Start difference. First operand 94 states and 132 transitions. Second operand has 27 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 21 states have internal predecessors, (45), 9 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2024-11-06 22:56:32,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:56:32,794 INFO L93 Difference]: Finished difference Result 327 states and 506 transitions. [2024-11-06 22:56:32,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-06 22:56:32,796 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 21 states have internal predecessors, (45), 9 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) Word has length 60 [2024-11-06 22:56:32,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:56:32,803 INFO L225 Difference]: With dead ends: 327 [2024-11-06 22:56:32,803 INFO L226 Difference]: Without dead ends: 323 [2024-11-06 22:56:32,805 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 829 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=728, Invalid=2694, Unknown=0, NotChecked=0, Total=3422 [2024-11-06 22:56:32,806 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 299 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-06 22:56:32,808 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 482 Invalid, 842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-06 22:56:32,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2024-11-06 22:56:32,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 185. [2024-11-06 22:56:32,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 106 states have (on average 1.2358490566037736) internal successors, (131), 111 states have internal predecessors, (131), 69 states have call successors, (69), 9 states have call predecessors, (69), 9 states have return successors, (68), 64 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-06 22:56:32,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 268 transitions. [2024-11-06 22:56:32,883 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 268 transitions. Word has length 60 [2024-11-06 22:56:32,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:56:32,884 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 268 transitions. [2024-11-06 22:56:32,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 21 states have internal predecessors, (45), 9 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2024-11-06 22:56:32,884 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 268 transitions. [2024-11-06 22:56:32,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-06 22:56:32,885 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:56:32,885 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:56:32,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-06 22:56:33,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:56:33,087 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:56:33,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:56:33,087 INFO L85 PathProgramCache]: Analyzing trace with hash -492391883, now seen corresponding path program 1 times [2024-11-06 22:56:33,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:56:33,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262971964] [2024-11-06 22:56:33,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:56:33,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:56:33,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:33,168 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 22:56:33,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:33,171 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 22:56:33,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:33,173 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-06 22:56:33,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:33,175 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-06 22:56:33,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:33,176 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-06 22:56:33,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:33,180 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-06 22:56:33,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:33,184 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-06 22:56:33,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:33,189 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-06 22:56:33,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:33,193 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-06 22:56:33,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:33,195 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-06 22:56:33,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:33,197 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-06 22:56:33,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:56:33,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262971964] [2024-11-06 22:56:33,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262971964] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 22:56:33,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 22:56:33,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-06 22:56:33,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153468496] [2024-11-06 22:56:33,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 22:56:33,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 22:56:33,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:56:33,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 22:56:33,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 22:56:33,200 INFO L87 Difference]: Start difference. First operand 185 states and 268 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-06 22:56:33,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:56:33,286 INFO L93 Difference]: Finished difference Result 306 states and 440 transitions. [2024-11-06 22:56:33,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 22:56:33,286 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 68 [2024-11-06 22:56:33,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:56:33,288 INFO L225 Difference]: With dead ends: 306 [2024-11-06 22:56:33,288 INFO L226 Difference]: Without dead ends: 182 [2024-11-06 22:56:33,291 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 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 22:56:33,292 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 2 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 22:56:33,293 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 120 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 22:56:33,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-11-06 22:56:33,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 179. [2024-11-06 22:56:33,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 109 states have (on average 1.2201834862385321) internal successors, (133), 110 states have internal predecessors, (133), 61 states have call successors, (61), 8 states have call predecessors, (61), 8 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-06 22:56:33,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 254 transitions. [2024-11-06 22:56:33,345 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 254 transitions. Word has length 68 [2024-11-06 22:56:33,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:56:33,345 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 254 transitions. [2024-11-06 22:56:33,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-06 22:56:33,345 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 254 transitions. [2024-11-06 22:56:33,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-06 22:56:33,346 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:56:33,346 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:56:33,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-06 22:56:33,347 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:56:33,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:56:33,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1382204855, now seen corresponding path program 1 times [2024-11-06 22:56:33,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:56:33,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006069700] [2024-11-06 22:56:33,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:56:33,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:56:33,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:33,498 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 22:56:33,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:33,501 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 22:56:33,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:33,532 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-06 22:56:33,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:33,536 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-06 22:56:33,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:33,543 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-06 22:56:33,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:33,548 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-06 22:56:33,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:33,552 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-06 22:56:33,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:33,557 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-06 22:56:33,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:33,566 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-06 22:56:33,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:33,571 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-06 22:56:33,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:56:33,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006069700] [2024-11-06 22:56:33,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006069700] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:56:33,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57788764] [2024-11-06 22:56:33,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:56:33,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:56:33,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:56:33,574 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 22:56:33,578 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 22:56:33,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:33,629 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-06 22:56:33,631 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:56:33,709 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 36 proven. 8 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-06 22:56:33,709 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:56:33,843 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-06 22:56:33,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57788764] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:56:33,843 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:56:33,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 14 [2024-11-06 22:56:33,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852508048] [2024-11-06 22:56:33,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:56:33,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-06 22:56:33,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:56:33,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-06 22:56:33,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-11-06 22:56:33,844 INFO L87 Difference]: Start difference. First operand 179 states and 254 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 12 states have internal predecessors, (41), 6 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2024-11-06 22:56:34,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:56:34,026 INFO L93 Difference]: Finished difference Result 255 states and 358 transitions. [2024-11-06 22:56:34,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-06 22:56:34,026 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 12 states have internal predecessors, (41), 6 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) Word has length 68 [2024-11-06 22:56:34,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:56:34,028 INFO L225 Difference]: With dead ends: 255 [2024-11-06 22:56:34,028 INFO L226 Difference]: Without dead ends: 140 [2024-11-06 22:56:34,028 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 148 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2024-11-06 22:56:34,029 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 39 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:56:34,029 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 241 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:56:34,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-06 22:56:34,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2024-11-06 22:56:34,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 87 states have (on average 1.1954022988505748) internal successors, (104), 88 states have internal predecessors, (104), 45 states have call successors, (45), 7 states have call predecessors, (45), 7 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-06 22:56:34,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 193 transitions. [2024-11-06 22:56:34,065 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 193 transitions. Word has length 68 [2024-11-06 22:56:34,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:56:34,065 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 193 transitions. [2024-11-06 22:56:34,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 12 states have internal predecessors, (41), 6 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2024-11-06 22:56:34,065 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 193 transitions. [2024-11-06 22:56:34,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-06 22:56:34,066 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:56:34,066 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 22:56:34,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-06 22:56:34,266 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 22:56:34,267 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:56:34,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:56:34,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1607561902, now seen corresponding path program 1 times [2024-11-06 22:56:34,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:56:34,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423979829] [2024-11-06 22:56:34,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:56:34,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:56:34,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:34,411 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 22:56:34,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:34,438 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 22:56:34,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:34,443 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-06 22:56:34,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:34,446 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-06 22:56:34,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:34,460 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-06 22:56:34,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:34,466 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-06 22:56:34,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:34,470 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-06 22:56:34,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:34,475 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-06 22:56:34,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:34,478 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-06 22:56:34,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:34,482 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-11-06 22:56:34,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:34,484 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-06 22:56:34,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:34,486 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 25 proven. 6 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-06 22:56:34,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:56:34,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423979829] [2024-11-06 22:56:34,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423979829] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:56:34,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033973760] [2024-11-06 22:56:34,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:56:34,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:56:34,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:56:34,488 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 22:56:34,491 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 22:56:34,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:56:34,545 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-06 22:56:34,546 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:56:34,674 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 67 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-06 22:56:34,674 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:56:34,819 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 25 proven. 6 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-06 22:56:34,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033973760] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:56:34,819 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:56:34,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2024-11-06 22:56:34,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142908795] [2024-11-06 22:56:34,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:56:34,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-06 22:56:34,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:56:34,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-06 22:56:34,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2024-11-06 22:56:34,820 INFO L87 Difference]: Start difference. First operand 140 states and 193 transitions. Second operand has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 14 states have internal predecessors, (38), 6 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (23), 8 states have call predecessors, (23), 6 states have call successors, (23) [2024-11-06 22:56:34,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:56:34,935 INFO L93 Difference]: Finished difference Result 156 states and 205 transitions. [2024-11-06 22:56:34,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-06 22:56:34,935 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 14 states have internal predecessors, (38), 6 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (23), 8 states have call predecessors, (23), 6 states have call successors, (23) Word has length 70 [2024-11-06 22:56:34,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:56:34,936 INFO L225 Difference]: With dead ends: 156 [2024-11-06 22:56:34,936 INFO L226 Difference]: Without dead ends: 0 [2024-11-06 22:56:34,936 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 151 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2024-11-06 22:56:34,937 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 24 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:56:34,937 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 176 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:56:34,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-06 22:56:34,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-06 22:56:34,937 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 22:56:34,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-06 22:56:34,937 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 70 [2024-11-06 22:56:34,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:56:34,937 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-06 22:56:34,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 14 states have internal predecessors, (38), 6 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (23), 8 states have call predecessors, (23), 6 states have call successors, (23) [2024-11-06 22:56:34,938 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-06 22:56:34,938 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-06 22:56:34,940 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-06 22:56:34,956 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 22:56:35,141 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 22:56:35,144 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:56:35,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-06 22:56:35,617 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-06 22:56:35,634 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:56:35 BoogieIcfgContainer [2024-11-06 22:56:35,635 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-06 22:56:35,635 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-06 22:56:35,635 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-06 22:56:35,635 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-06 22:56:35,636 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:56:22" (3/4) ... [2024-11-06 22:56:35,638 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-06 22:56:35,642 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-11-06 22:56:35,642 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-06 22:56:35,645 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-11-06 22:56:35,645 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-06 22:56:35,646 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-06 22:56:35,646 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-06 22:56:35,712 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-06 22:56:35,715 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-06 22:56:35,715 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-06 22:56:35,716 INFO L158 Benchmark]: Toolchain (without parser) took 13893.03ms. Allocated memory was 142.6MB in the beginning and 218.1MB in the end (delta: 75.5MB). Free memory was 117.2MB in the beginning and 151.1MB in the end (delta: -33.9MB). Peak memory consumption was 38.4MB. Max. memory is 16.1GB. [2024-11-06 22:56:35,717 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 117.4MB. Free memory is still 81.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-06 22:56:35,717 INFO L158 Benchmark]: CACSL2BoogieTranslator took 196.77ms. Allocated memory is still 142.6MB. Free memory was 117.1MB in the beginning and 105.7MB in the end (delta: 11.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-06 22:56:35,717 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.88ms. Allocated memory is still 142.6MB. Free memory was 105.7MB in the beginning and 104.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-06 22:56:35,718 INFO L158 Benchmark]: Boogie Preprocessor took 48.73ms. Allocated memory is still 142.6MB. Free memory was 104.5MB in the beginning and 103.3MB in the end (delta: 1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-06 22:56:35,718 INFO L158 Benchmark]: RCFGBuilder took 239.48ms. Allocated memory is still 142.6MB. Free memory was 103.1MB in the beginning and 91.7MB in the end (delta: 11.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-06 22:56:35,718 INFO L158 Benchmark]: TraceAbstraction took 13293.77ms. Allocated memory was 142.6MB in the beginning and 218.1MB in the end (delta: 75.5MB). Free memory was 91.2MB in the beginning and 158.1MB in the end (delta: -66.8MB). Peak memory consumption was 98.0MB. Max. memory is 16.1GB. [2024-11-06 22:56:35,719 INFO L158 Benchmark]: Witness Printer took 80.34ms. Allocated memory is still 218.1MB. Free memory was 158.1MB in the beginning and 151.1MB in the end (delta: 7.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-06 22:56:35,720 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 117.4MB. Free memory is still 81.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 196.77ms. Allocated memory is still 142.6MB. Free memory was 117.1MB in the beginning and 105.7MB in the end (delta: 11.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.88ms. Allocated memory is still 142.6MB. Free memory was 105.7MB in the beginning and 104.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 48.73ms. Allocated memory is still 142.6MB. Free memory was 104.5MB in the beginning and 103.3MB in the end (delta: 1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 239.48ms. Allocated memory is still 142.6MB. Free memory was 103.1MB in the beginning and 91.7MB in the end (delta: 11.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 13293.77ms. Allocated memory was 142.6MB in the beginning and 218.1MB in the end (delta: 75.5MB). Free memory was 91.2MB in the beginning and 158.1MB in the end (delta: -66.8MB). Peak memory consumption was 98.0MB. Max. memory is 16.1GB. * Witness Printer took 80.34ms. Allocated memory is still 218.1MB. Free memory was 158.1MB in the beginning and 151.1MB in the end (delta: 7.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 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: 12.8s, OverallIterations: 12, TraceHistogramMax: 8, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 573 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 539 mSDsluCounter, 2089 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1676 mSDsCounter, 326 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1316 IncrementalHoareTripleChecker+Invalid, 1642 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 326 mSolverCounterUnsat, 413 mSDtfsCounter, 1316 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 885 GetRequests, 728 SyntacticMatches, 12 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 970 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=185occurred in iteration=9, InterpolantAutomatonStates: 112, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 12 MinimizatonAttempts, 196 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.8s InterpolantComputationTime, 993 NumberOfCodeBlocks, 993 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 1021 ConstructedInterpolants, 0 QuantifiedInterpolants, 3306 SizeOfPredicates, 23 NumberOfNonLiveVariables, 1143 ConjunctsInSsa, 136 ConjunctsInUnsatCore, 21 InterpolantComputations, 7 PerfectInterpolantSequences, 1097/1192 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) && (k == 1)) && (b == 1)) && (p == 1)) && (a == 1)) && (x == 1)) && (r == 0)) && (q == 0)) && (y == 1)) && (s == 1)) || ((((((((((b == 1) && (p == 1)) && (c == 1)) && (a == 1)) && (x == 1)) && (r == 0)) && (q == 0)) && (y == 1)) && (k == 0)) && (s == 1))) - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: (((((((((((((d == 1) && (p == 1)) && (c <= 1)) && (v == 1)) && (b == v)) && (x == 1)) && (r == 0)) && (q == 0)) && (y == 1)) && (k == 0)) && (b <= c)) && (a == x)) && (s == 1)) - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: ((((((((((p == 0) && (a <= 1)) && (b == 0)) && (q == 1)) && (y == 1)) && (1 <= x)) && (r == 1)) && (((long long) x + 1) <= ((__int128) 2 * a))) && (((__int128) s + 1) == 0)) || ((((((((b == 1) && (p == 1)) && (a == 1)) && (x == 1)) && (r == 0)) && (q == 0)) && (y == 1)) && (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 22:56:35,743 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