./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursified_loop-crafted/recursified_simple_array_index_value_4.i --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/recursified_loop-crafted/recursified_simple_array_index_value_4.i', '-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', '30b7823755366f973ac95243d129f8492129fd0a43fc3ddfb545e22ce84d0c90'] 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/recursified_loop-crafted/recursified_simple_array_index_value_4.i -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 30b7823755366f973ac95243d129f8492129fd0a43fc3ddfb545e22ce84d0c90 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-06 23:50:59,975 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 23:51:00,100 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-06 23:51:00,107 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 23:51:00,107 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 23:51:00,135 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 23:51:00,137 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 23:51:00,137 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 23:51:00,138 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 23:51:00,138 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 23:51:00,139 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 23:51:00,139 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 23:51:00,139 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 23:51:00,139 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 23:51:00,140 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 23:51:00,140 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 23:51:00,140 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 23:51:00,140 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-06 23:51:00,140 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-06 23:51:00,140 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-06 23:51:00,141 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 23:51:00,141 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 23:51:00,141 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 23:51:00,141 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 23:51:00,141 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 23:51:00,141 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-06 23:51:00,141 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 23:51:00,141 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 23:51:00,142 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 23:51:00,142 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 23:51:00,142 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 23:51:00,142 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 23:51:00,142 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 23:51:00,142 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 23:51:00,143 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 23:51:00,143 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 23:51:00,143 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-06 23:51:00,143 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-06 23:51:00,143 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 23:51:00,143 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 23:51:00,144 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 23:51:00,144 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 23:51:00,144 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 -> 30b7823755366f973ac95243d129f8492129fd0a43fc3ddfb545e22ce84d0c90 [2024-11-06 23:51:00,424 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 23:51:00,430 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 23:51:00,432 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 23:51:00,432 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 23:51:00,433 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 23:51:00,434 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursified_loop-crafted/recursified_simple_array_index_value_4.i [2024-11-06 23:51:01,672 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 23:51:01,872 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 23:51:01,873 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursified_loop-crafted/recursified_simple_array_index_value_4.i [2024-11-06 23:51:01,879 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ea2fb6277/4c380936737b47a79ccb991ec797a38b/FLAG6385f9d44 [2024-11-06 23:51:02,235 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ea2fb6277/4c380936737b47a79ccb991ec797a38b [2024-11-06 23:51:02,237 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 23:51:02,239 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-06 23:51:02,240 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 23:51:02,240 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 23:51:02,243 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 23:51:02,244 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:51:02" (1/1) ... [2024-11-06 23:51:02,245 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5aa26116 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:51:02, skipping insertion in model container [2024-11-06 23:51:02,245 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:51:02" (1/1) ... [2024-11-06 23:51:02,257 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 23:51:02,362 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/recursified_loop-crafted/recursified_simple_array_index_value_4.i[1803,1816] [2024-11-06 23:51:02,382 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 23:51:02,389 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 23:51:02,398 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/recursified_loop-crafted/recursified_simple_array_index_value_4.i[1803,1816] [2024-11-06 23:51:02,411 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 23:51:02,423 INFO L204 MainTranslator]: Completed translation [2024-11-06 23:51:02,423 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:51:02 WrapperNode [2024-11-06 23:51:02,424 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 23:51:02,424 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 23:51:02,424 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 23:51:02,425 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 23:51:02,430 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:51:02" (1/1) ... [2024-11-06 23:51:02,439 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:51:02" (1/1) ... [2024-11-06 23:51:02,462 INFO L138 Inliner]: procedures = 20, calls = 62, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 45 [2024-11-06 23:51:02,463 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 23:51:02,464 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 23:51:02,464 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 23:51:02,464 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 23:51:02,472 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:51:02" (1/1) ... [2024-11-06 23:51:02,473 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:51:02" (1/1) ... [2024-11-06 23:51:02,475 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:51:02" (1/1) ... [2024-11-06 23:51:02,493 INFO L175 MemorySlicer]: Split 37 memory accesses to 6 slices as follows [2, 3, 5, 11, 5, 11]. 30 percent of accesses are in the largest equivalence class. The 4 initializations are split as follows [2, 1, 1, 0, 0, 0]. The 9 writes are split as follows [0, 1, 1, 3, 1, 3]. [2024-11-06 23:51:02,499 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:51:02" (1/1) ... [2024-11-06 23:51:02,499 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:51:02" (1/1) ... [2024-11-06 23:51:02,509 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:51:02" (1/1) ... [2024-11-06 23:51:02,513 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:51:02" (1/1) ... [2024-11-06 23:51:02,518 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:51:02" (1/1) ... [2024-11-06 23:51:02,518 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:51:02" (1/1) ... [2024-11-06 23:51:02,524 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 23:51:02,525 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 23:51:02,529 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 23:51:02,529 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 23:51:02,530 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:51:02" (1/1) ... [2024-11-06 23:51:02,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 23:51:02,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:51:02,561 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-06 23:51:02,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-06 23:51:02,587 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_40_to_41_0 [2024-11-06 23:51:02,588 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_40_to_41_0 [2024-11-06 23:51:02,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 23:51:02,588 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_49_to_54_0 [2024-11-06 23:51:02,588 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_49_to_54_0 [2024-11-06 23:51:02,588 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-06 23:51:02,588 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-06 23:51:02,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-06 23:51:02,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-06 23:51:02,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-06 23:51:02,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-06 23:51:02,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-06 23:51:02,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-06 23:51:02,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-06 23:51:02,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-06 23:51:02,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-06 23:51:02,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-06 23:51:02,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-06 23:51:02,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-06 23:51:02,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-06 23:51:02,590 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_58_to_61_0 [2024-11-06 23:51:02,590 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_58_to_61_0 [2024-11-06 23:51:02,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 23:51:02,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 23:51:02,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-06 23:51:02,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-06 23:51:02,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-06 23:51:02,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-06 23:51:02,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-06 23:51:02,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-06 23:51:02,591 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-06 23:51:02,591 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-06 23:51:02,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-06 23:51:02,688 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 23:51:02,689 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 23:51:02,919 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-06 23:51:02,920 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 23:51:02,933 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 23:51:02,934 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-06 23:51:02,934 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:51:02 BoogieIcfgContainer [2024-11-06 23:51:02,934 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 23:51:02,936 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 23:51:02,938 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 23:51:02,942 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 23:51:02,943 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:51:02" (1/3) ... [2024-11-06 23:51:02,943 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@291c00a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:51:02, skipping insertion in model container [2024-11-06 23:51:02,943 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:51:02" (2/3) ... [2024-11-06 23:51:02,943 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@291c00a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:51:02, skipping insertion in model container [2024-11-06 23:51:02,944 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:51:02" (3/3) ... [2024-11-06 23:51:02,945 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_simple_array_index_value_4.i [2024-11-06 23:51:02,958 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 23:51:02,958 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-06 23:51:03,009 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 23:51:03,023 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;@7aab0ccc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 23:51:03,023 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-06 23:51:03,027 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 35 states have internal predecessors, (38), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-06 23:51:03,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-06 23:51:03,033 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:51:03,034 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:51:03,034 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:51:03,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:51:03,038 INFO L85 PathProgramCache]: Analyzing trace with hash 991491108, now seen corresponding path program 1 times [2024-11-06 23:51:03,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:51:03,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695335463] [2024-11-06 23:51:03,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:51:03,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:51:03,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:51:03,278 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:51:03,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:51:03,292 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 23:51:03,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:51:03,302 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-06 23:51:03,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:51:03,316 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 23:51:03,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:51:03,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695335463] [2024-11-06 23:51:03,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695335463] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 23:51:03,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 23:51:03,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 23:51:03,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908204560] [2024-11-06 23:51:03,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 23:51:03,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 23:51:03,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:51:03,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 23:51:03,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 23:51:03,340 INFO L87 Difference]: Start difference. First operand has 48 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 35 states have internal predecessors, (38), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-06 23:51:03,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:51:03,483 INFO L93 Difference]: Finished difference Result 88 states and 119 transitions. [2024-11-06 23:51:03,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 23:51:03,486 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2024-11-06 23:51:03,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:51:03,491 INFO L225 Difference]: With dead ends: 88 [2024-11-06 23:51:03,491 INFO L226 Difference]: Without dead ends: 44 [2024-11-06 23:51:03,493 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 23:51:03,495 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 29 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 23:51:03,496 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 36 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 23:51:03,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-06 23:51:03,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2024-11-06 23:51:03,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 29 states have internal predecessors, (30), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-06 23:51:03,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2024-11-06 23:51:03,524 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 28 [2024-11-06 23:51:03,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:51:03,525 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2024-11-06 23:51:03,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-06 23:51:03,525 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2024-11-06 23:51:03,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-06 23:51:03,526 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:51:03,526 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:51:03,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-06 23:51:03,527 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:51:03,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:51:03,527 INFO L85 PathProgramCache]: Analyzing trace with hash -744488160, now seen corresponding path program 1 times [2024-11-06 23:51:03,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:51:03,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269071775] [2024-11-06 23:51:03,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:51:03,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:51:03,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:51:03,829 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:51:03,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:51:03,921 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 23:51:03,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:51:03,928 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-06 23:51:03,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:51:03,936 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 23:51:03,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:51:03,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269071775] [2024-11-06 23:51:03,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269071775] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 23:51:03,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 23:51:03,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-06 23:51:03,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810318028] [2024-11-06 23:51:03,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 23:51:03,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-06 23:51:03,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:51:03,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-06 23:51:03,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-06 23:51:03,940 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-06 23:51:04,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:51:04,160 INFO L93 Difference]: Finished difference Result 78 states and 93 transitions. [2024-11-06 23:51:04,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-06 23:51:04,160 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2024-11-06 23:51:04,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:51:04,161 INFO L225 Difference]: With dead ends: 78 [2024-11-06 23:51:04,161 INFO L226 Difference]: Without dead ends: 44 [2024-11-06 23:51:04,162 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-06 23:51:04,162 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 27 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 23:51:04,163 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 55 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 23:51:04,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-06 23:51:04,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2024-11-06 23:51:04,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 30 states have internal predecessors, (31), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2024-11-06 23:51:04,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2024-11-06 23:51:04,174 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 28 [2024-11-06 23:51:04,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:51:04,175 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2024-11-06 23:51:04,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-06 23:51:04,175 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2024-11-06 23:51:04,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-06 23:51:04,176 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:51:04,176 INFO L215 NwaCegarLoop]: trace histogram [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 23:51:04,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-06 23:51:04,176 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:51:04,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:51:04,178 INFO L85 PathProgramCache]: Analyzing trace with hash 2084723388, now seen corresponding path program 1 times [2024-11-06 23:51:04,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:51:04,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288188386] [2024-11-06 23:51:04,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:51:04,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:51:04,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:51:04,547 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:51:04,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:51:04,732 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:51:04,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:51:04,806 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-06 23:51:04,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:51:04,809 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-06 23:51:04,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:51:04,811 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-06 23:51:04,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:51:04,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288188386] [2024-11-06 23:51:04,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288188386] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 23:51:04,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701587786] [2024-11-06 23:51:04,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:51:04,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:51:04,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:51:04,815 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 23:51:04,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-06 23:51:05,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:51:05,179 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-06 23:51:05,184 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:51:05,407 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-06 23:51:05,408 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:51:05,925 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 23:51:05,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701587786] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 23:51:05,926 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 23:51:05,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 23 [2024-11-06 23:51:05,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462374219] [2024-11-06 23:51:05,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 23:51:05,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-06 23:51:05,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:51:05,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-06 23:51:05,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2024-11-06 23:51:05,929 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand has 23 states, 18 states have (on average 2.0) internal successors, (36), 19 states have internal predecessors, (36), 6 states have call successors, (12), 6 states have call predecessors, (12), 8 states have return successors, (10), 4 states have call predecessors, (10), 6 states have call successors, (10) [2024-11-06 23:51:06,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:51:06,576 INFO L93 Difference]: Finished difference Result 89 states and 110 transitions. [2024-11-06 23:51:06,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-06 23:51:06,577 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 18 states have (on average 2.0) internal successors, (36), 19 states have internal predecessors, (36), 6 states have call successors, (12), 6 states have call predecessors, (12), 8 states have return successors, (10), 4 states have call predecessors, (10), 6 states have call successors, (10) Word has length 33 [2024-11-06 23:51:06,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:51:06,578 INFO L225 Difference]: With dead ends: 89 [2024-11-06 23:51:06,578 INFO L226 Difference]: Without dead ends: 55 [2024-11-06 23:51:06,579 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=167, Invalid=763, Unknown=0, NotChecked=0, Total=930 [2024-11-06 23:51:06,579 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 57 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-06 23:51:06,579 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 128 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-06 23:51:06,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-06 23:51:06,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2024-11-06 23:51:06,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 32 states have (on average 1.15625) internal successors, (37), 35 states have internal predecessors, (37), 12 states have call successors, (12), 6 states have call predecessors, (12), 8 states have return successors, (13), 12 states have call predecessors, (13), 10 states have call successors, (13) [2024-11-06 23:51:06,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 62 transitions. [2024-11-06 23:51:06,593 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 62 transitions. Word has length 33 [2024-11-06 23:51:06,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:51:06,593 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 62 transitions. [2024-11-06 23:51:06,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 18 states have (on average 2.0) internal successors, (36), 19 states have internal predecessors, (36), 6 states have call successors, (12), 6 states have call predecessors, (12), 8 states have return successors, (10), 4 states have call predecessors, (10), 6 states have call successors, (10) [2024-11-06 23:51:06,594 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2024-11-06 23:51:06,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-06 23:51:06,594 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:51:06,595 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 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 23:51:06,613 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 23:51:06,795 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 23:51:06,795 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:51:06,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:51:06,796 INFO L85 PathProgramCache]: Analyzing trace with hash -710152772, now seen corresponding path program 2 times [2024-11-06 23:51:06,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:51:06,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277218454] [2024-11-06 23:51:06,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:51:06,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:51:06,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:51:07,571 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:51:07,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:51:07,994 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:51:08,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:51:08,289 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:51:08,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:51:08,500 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:51:08,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:51:08,645 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:51:08,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:51:08,705 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-06 23:51:08,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:51:08,707 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-06 23:51:08,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:51:08,709 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-06 23:51:08,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:51:08,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277218454] [2024-11-06 23:51:08,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277218454] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 23:51:08,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42855150] [2024-11-06 23:51:08,709 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 23:51:08,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:51:08,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:51:08,711 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 23:51:08,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-06 23:51:08,847 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 23:51:08,847 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 23:51:08,850 INFO L255 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 75 conjuncts are in the unsatisfiable core [2024-11-06 23:51:08,854 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:51:09,340 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-06 23:51:09,340 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:51:35,423 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 23:51:35,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42855150] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 23:51:35,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 23:51:35,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 12, 22] total 48 [2024-11-06 23:51:35,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137911413] [2024-11-06 23:51:35,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 23:51:35,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-06 23:51:35,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:51:35,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-06 23:51:35,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=2008, Unknown=6, NotChecked=0, Total=2256 [2024-11-06 23:51:35,430 INFO L87 Difference]: Start difference. First operand 53 states and 62 transitions. Second operand has 48 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 41 states have internal predecessors, (58), 13 states have call successors, (18), 9 states have call predecessors, (18), 17 states have return successors, (19), 13 states have call predecessors, (19), 13 states have call successors, (19) [2024-11-06 23:51:40,005 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-06 23:51:44,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-06 23:51:48,021 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-06 23:51:52,030 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-06 23:51:56,034 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-06 23:52:00,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-06 23:52:28,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-06 23:52:32,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-06 23:52:36,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-06 23:52:40,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-06 23:52:44,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []