./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-1.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/uthash-2.0.2/uthash_BER_test10-1.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', '9885703216edf9cfe4bfb438db591a48e102e73a3e0423f90ce871c05fdf2b57'] 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/uthash-2.0.2/uthash_BER_test10-1.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 9885703216edf9cfe4bfb438db591a48e102e73a3e0423f90ce871c05fdf2b57 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 14:52:17,578 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 14:52:17,662 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-07 14:52:17,667 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 14:52:17,667 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 14:52:17,698 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 14:52:17,700 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 14:52:17,700 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 14:52:17,701 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 14:52:17,701 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 14:52:17,701 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 14:52:17,702 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 14:52:17,702 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 14:52:17,702 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 14:52:17,703 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 14:52:17,703 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 14:52:17,703 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-07 14:52:17,703 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 14:52:17,703 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 14:52:17,703 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 14:52:17,703 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 14:52:17,703 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-07 14:52:17,703 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 14:52:17,703 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-07 14:52:17,703 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 14:52:17,703 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 14:52:17,704 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-07 14:52:17,704 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 14:52:17,704 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 14:52:17,704 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 14:52:17,704 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 14:52:17,704 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 14:52:17,704 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 14:52:17,704 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 14:52:17,704 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 14:52:17,704 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-07 14:52:17,704 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 14:52:17,704 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 14:52:17,704 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 14:52:17,705 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 14:52:17,705 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 14:52:17,705 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 14:52:17,705 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 -> 9885703216edf9cfe4bfb438db591a48e102e73a3e0423f90ce871c05fdf2b57 [2024-11-07 14:52:18,028 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 14:52:18,038 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 14:52:18,040 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 14:52:18,041 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 14:52:18,041 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 14:52:18,043 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-1.i [2024-11-07 14:52:19,298 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 14:52:19,604 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 14:52:19,607 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-1.i [2024-11-07 14:52:19,625 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3daccc21a/c628d7978efb4254b1bef556184e9850/FLAG89ec5eb4f [2024-11-07 14:52:19,856 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3daccc21a/c628d7978efb4254b1bef556184e9850 [2024-11-07 14:52:19,858 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 14:52:19,860 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 14:52:19,861 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 14:52:19,861 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 14:52:19,864 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 14:52:19,865 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:52:19" (1/1) ... [2024-11-07 14:52:19,865 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b12c1ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:52:19, skipping insertion in model container [2024-11-07 14:52:19,866 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:52:19" (1/1) ... [2024-11-07 14:52:19,908 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 14:52:20,226 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/uthash-2.0.2/uthash_BER_test10-1.i[33022,33035] [2024-11-07 14:52:20,443 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 14:52:20,453 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 14:52:20,500 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/uthash-2.0.2/uthash_BER_test10-1.i[33022,33035] [2024-11-07 14:52:20,597 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 14:52:20,658 INFO L204 MainTranslator]: Completed translation [2024-11-07 14:52:20,659 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:52:20 WrapperNode [2024-11-07 14:52:20,659 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 14:52:20,660 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 14:52:20,660 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 14:52:20,660 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 14:52:20,665 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:52:20" (1/1) ... [2024-11-07 14:52:20,714 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:52:20" (1/1) ... [2024-11-07 14:52:20,839 INFO L138 Inliner]: procedures = 177, calls = 506, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 3410 [2024-11-07 14:52:20,839 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 14:52:20,840 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 14:52:20,840 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 14:52:20,840 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 14:52:20,849 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:52:20" (1/1) ... [2024-11-07 14:52:20,849 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:52:20" (1/1) ... [2024-11-07 14:52:20,866 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:52:20" (1/1) ... [2024-11-07 14:52:21,041 INFO L175 MemorySlicer]: Split 480 memory accesses to 3 slices as follows [2, 372, 106]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 86 writes are split as follows [0, 82, 4]. [2024-11-07 14:52:21,042 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:52:20" (1/1) ... [2024-11-07 14:52:21,043 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:52:20" (1/1) ... [2024-11-07 14:52:21,135 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:52:20" (1/1) ... [2024-11-07 14:52:21,170 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:52:20" (1/1) ... [2024-11-07 14:52:21,177 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:52:20" (1/1) ... [2024-11-07 14:52:21,188 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:52:20" (1/1) ... [2024-11-07 14:52:21,215 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 14:52:21,217 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 14:52:21,217 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 14:52:21,217 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 14:52:21,218 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:52:20" (1/1) ... [2024-11-07 14:52:21,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 14:52:21,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 14:52:21,250 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) [2024-11-07 14:52:21,255 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 [2024-11-07 14:52:21,279 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2024-11-07 14:52:21,280 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2024-11-07 14:52:21,280 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-07 14:52:21,280 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-07 14:52:21,280 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-07 14:52:21,280 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-07 14:52:21,280 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-07 14:52:21,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-07 14:52:21,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-07 14:52:21,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-07 14:52:21,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-07 14:52:21,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-07 14:52:21,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-07 14:52:21,281 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-07 14:52:21,281 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-07 14:52:21,281 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-07 14:52:21,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-07 14:52:21,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 14:52:21,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-07 14:52:21,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-07 14:52:21,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-07 14:52:21,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-07 14:52:21,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-07 14:52:21,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-07 14:52:21,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-07 14:52:21,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-07 14:52:21,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 14:52:21,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-07 14:52:21,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-07 14:52:21,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 14:52:21,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 14:52:21,599 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 14:52:21,601 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 14:52:24,484 INFO L? ?]: Removed 780 outVars from TransFormulas that were not future-live. [2024-11-07 14:52:24,484 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 14:52:24,529 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 14:52:24,529 INFO L316 CfgBuilder]: Removed 151 assume(true) statements. [2024-11-07 14:52:24,529 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:52:24 BoogieIcfgContainer [2024-11-07 14:52:24,530 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 14:52:24,532 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 14:52:24,532 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 14:52:24,538 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 14:52:24,538 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:52:19" (1/3) ... [2024-11-07 14:52:24,538 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@358f681a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:52:24, skipping insertion in model container [2024-11-07 14:52:24,538 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:52:20" (2/3) ... [2024-11-07 14:52:24,539 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@358f681a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:52:24, skipping insertion in model container [2024-11-07 14:52:24,539 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:52:24" (3/3) ... [2024-11-07 14:52:24,540 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_test10-1.i [2024-11-07 14:52:24,555 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 14:52:24,555 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-07 14:52:24,638 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 14:52:24,647 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;@7e6e1164, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 14:52:24,648 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-07 14:52:24,656 INFO L276 IsEmpty]: Start isEmpty. Operand has 1030 states, 1011 states have (on average 1.6280909990108803) internal successors, (1646), 1016 states have internal predecessors, (1646), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-07 14:52:24,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-07 14:52:24,663 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 14:52:24,663 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 14:52:24,663 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 14:52:24,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 14:52:24,667 INFO L85 PathProgramCache]: Analyzing trace with hash -2093043057, now seen corresponding path program 1 times [2024-11-07 14:52:24,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 14:52:24,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647928189] [2024-11-07 14:52:24,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 14:52:24,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 14:52:24,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:24,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 14:52:24,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 14:52:24,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647928189] [2024-11-07 14:52:24,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647928189] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 14:52:24,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 14:52:24,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 14:52:24,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667008538] [2024-11-07 14:52:24,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 14:52:24,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-07 14:52:24,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 14:52:24,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-07 14:52:24,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-07 14:52:24,866 INFO L87 Difference]: Start difference. First operand has 1030 states, 1011 states have (on average 1.6280909990108803) internal successors, (1646), 1016 states have internal predecessors, (1646), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 14:52:24,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 14:52:24,977 INFO L93 Difference]: Finished difference Result 2058 states and 3354 transitions. [2024-11-07 14:52:24,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-07 14:52:24,979 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-07 14:52:24,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 14:52:25,002 INFO L225 Difference]: With dead ends: 2058 [2024-11-07 14:52:25,003 INFO L226 Difference]: Without dead ends: 1026 [2024-11-07 14:52:25,011 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-07 14:52:25,014 INFO L432 NwaCegarLoop]: 1515 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, 1515 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 [2024-11-07 14:52:25,014 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1515 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 14:52:25,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2024-11-07 14:52:25,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 1026. [2024-11-07 14:52:25,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1026 states, 1008 states have (on average 1.4722222222222223) internal successors, (1484), 1013 states have internal predecessors, (1484), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-07 14:52:25,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1026 states to 1026 states and 1511 transitions. [2024-11-07 14:52:25,160 INFO L78 Accepts]: Start accepts. Automaton has 1026 states and 1511 transitions. Word has length 13 [2024-11-07 14:52:25,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 14:52:25,160 INFO L471 AbstractCegarLoop]: Abstraction has 1026 states and 1511 transitions. [2024-11-07 14:52:25,160 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 14:52:25,160 INFO L276 IsEmpty]: Start isEmpty. Operand 1026 states and 1511 transitions. [2024-11-07 14:52:25,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-07 14:52:25,170 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 14:52:25,170 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 14:52:25,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 14:52:25,171 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 14:52:25,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 14:52:25,172 INFO L85 PathProgramCache]: Analyzing trace with hash 883861861, now seen corresponding path program 1 times [2024-11-07 14:52:25,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 14:52:25,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516026302] [2024-11-07 14:52:25,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 14:52:25,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 14:52:25,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:25,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 14:52:25,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 14:52:25,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516026302] [2024-11-07 14:52:25,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516026302] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 14:52:25,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 14:52:25,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 14:52:25,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627449333] [2024-11-07 14:52:25,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 14:52:25,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 14:52:25,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 14:52:25,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 14:52:25,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 14:52:25,710 INFO L87 Difference]: Start difference. First operand 1026 states and 1511 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 14:52:25,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 14:52:25,949 INFO L93 Difference]: Finished difference Result 2046 states and 3016 transitions. [2024-11-07 14:52:25,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 14:52:25,949 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-07 14:52:25,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 14:52:25,960 INFO L225 Difference]: With dead ends: 2046 [2024-11-07 14:52:25,960 INFO L226 Difference]: Without dead ends: 1412 [2024-11-07 14:52:25,964 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-07 14:52:25,966 INFO L432 NwaCegarLoop]: 1550 mSDtfsCounter, 548 mSDsluCounter, 2991 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 4541 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 14:52:25,967 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [554 Valid, 4541 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 14:52:25,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1412 states. [2024-11-07 14:52:26,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1412 to 1028. [2024-11-07 14:52:26,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 1010 states have (on average 1.4712871287128713) internal successors, (1486), 1015 states have internal predecessors, (1486), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-07 14:52:26,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1513 transitions. [2024-11-07 14:52:26,009 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1513 transitions. Word has length 68 [2024-11-07 14:52:26,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 14:52:26,010 INFO L471 AbstractCegarLoop]: Abstraction has 1028 states and 1513 transitions. [2024-11-07 14:52:26,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 14:52:26,010 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1513 transitions. [2024-11-07 14:52:26,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-07 14:52:26,015 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 14:52:26,015 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 14:52:26,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 14:52:26,015 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 14:52:26,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 14:52:26,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1634856174, now seen corresponding path program 1 times [2024-11-07 14:52:26,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 14:52:26,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475981653] [2024-11-07 14:52:26,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 14:52:26,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 14:52:26,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:26,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 14:52:26,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 14:52:26,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475981653] [2024-11-07 14:52:26,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475981653] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 14:52:26,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 14:52:26,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-07 14:52:26,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157512719] [2024-11-07 14:52:26,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 14:52:26,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 14:52:26,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 14:52:26,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 14:52:26,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-07 14:52:26,731 INFO L87 Difference]: Start difference. First operand 1028 states and 1513 transitions. Second operand has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 14:52:27,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 14:52:27,001 INFO L93 Difference]: Finished difference Result 2436 states and 3581 transitions. [2024-11-07 14:52:27,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 14:52:27,002 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2024-11-07 14:52:27,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 14:52:27,009 INFO L225 Difference]: With dead ends: 2436 [2024-11-07 14:52:27,010 INFO L226 Difference]: Without dead ends: 1412 [2024-11-07 14:52:27,012 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-07 14:52:27,013 INFO L432 NwaCegarLoop]: 1553 mSDtfsCounter, 546 mSDsluCounter, 4980 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 6533 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-07 14:52:27,013 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [552 Valid, 6533 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-07 14:52:27,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1412 states. [2024-11-07 14:52:27,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1412 to 1031. [2024-11-07 14:52:27,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1031 states, 1013 states have (on average 1.4698914116485686) internal successors, (1489), 1018 states have internal predecessors, (1489), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-07 14:52:27,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1516 transitions. [2024-11-07 14:52:27,047 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1516 transitions. Word has length 145 [2024-11-07 14:52:27,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 14:52:27,047 INFO L471 AbstractCegarLoop]: Abstraction has 1031 states and 1516 transitions. [2024-11-07 14:52:27,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 14:52:27,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1516 transitions. [2024-11-07 14:52:27,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-11-07 14:52:27,055 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 14:52:27,055 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 14:52:27,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 14:52:27,056 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 14:52:27,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 14:52:27,058 INFO L85 PathProgramCache]: Analyzing trace with hash -348533310, now seen corresponding path program 1 times [2024-11-07 14:52:27,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 14:52:27,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907314358] [2024-11-07 14:52:27,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 14:52:27,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 14:52:27,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:27,496 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 14:52:27,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 14:52:27,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907314358] [2024-11-07 14:52:27,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907314358] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 14:52:27,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 14:52:27,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 14:52:27,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755913320] [2024-11-07 14:52:27,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 14:52:27,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 14:52:27,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 14:52:27,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 14:52:27,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 14:52:27,502 INFO L87 Difference]: Start difference. First operand 1031 states and 1516 transitions. Second operand has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 14:52:27,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 14:52:27,600 INFO L93 Difference]: Finished difference Result 2013 states and 2959 transitions. [2024-11-07 14:52:27,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 14:52:27,601 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 216 [2024-11-07 14:52:27,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 14:52:27,607 INFO L225 Difference]: With dead ends: 2013 [2024-11-07 14:52:27,607 INFO L226 Difference]: Without dead ends: 989 [2024-11-07 14:52:27,610 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-07 14:52:27,613 INFO L432 NwaCegarLoop]: 1409 mSDtfsCounter, 30 mSDsluCounter, 2799 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 4208 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 14:52:27,614 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 4208 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 14:52:27,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 989 states. [2024-11-07 14:52:27,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 989 to 989. [2024-11-07 14:52:27,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 989 states, 971 states have (on average 1.454170957775489) internal successors, (1412), 976 states have internal predecessors, (1412), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-07 14:52:27,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1439 transitions. [2024-11-07 14:52:27,642 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1439 transitions. Word has length 216 [2024-11-07 14:52:27,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 14:52:27,644 INFO L471 AbstractCegarLoop]: Abstraction has 989 states and 1439 transitions. [2024-11-07 14:52:27,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 14:52:27,644 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1439 transitions. [2024-11-07 14:52:27,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-11-07 14:52:27,650 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 14:52:27,650 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 14:52:27,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 14:52:27,650 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 14:52:27,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 14:52:27,651 INFO L85 PathProgramCache]: Analyzing trace with hash 902700470, now seen corresponding path program 1 times [2024-11-07 14:52:27,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 14:52:27,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402236001] [2024-11-07 14:52:27,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 14:52:27,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 14:52:27,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:27,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 14:52:27,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 14:52:27,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402236001] [2024-11-07 14:52:27,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402236001] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 14:52:27,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 14:52:27,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 14:52:27,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242716737] [2024-11-07 14:52:27,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 14:52:27,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 14:52:27,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 14:52:27,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 14:52:27,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 14:52:27,950 INFO L87 Difference]: Start difference. First operand 989 states and 1439 transitions. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 14:52:28,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 14:52:28,048 INFO L93 Difference]: Finished difference Result 2502 states and 3654 transitions. [2024-11-07 14:52:28,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 14:52:28,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 216 [2024-11-07 14:52:28,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 14:52:28,056 INFO L225 Difference]: With dead ends: 2502 [2024-11-07 14:52:28,056 INFO L226 Difference]: Without dead ends: 1520 [2024-11-07 14:52:28,058 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 14:52:28,060 INFO L432 NwaCegarLoop]: 1426 mSDtfsCounter, 716 mSDsluCounter, 1408 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 2834 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 14:52:28,060 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [719 Valid, 2834 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 14:52:28,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1520 states. [2024-11-07 14:52:28,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1520 to 1361. [2024-11-07 14:52:28,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1361 states, 1341 states have (on average 1.4571215510812827) internal successors, (1954), 1346 states have internal predecessors, (1954), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 12 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-07 14:52:28,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1361 states to 1361 states and 1985 transitions. [2024-11-07 14:52:28,110 INFO L78 Accepts]: Start accepts. Automaton has 1361 states and 1985 transitions. Word has length 216 [2024-11-07 14:52:28,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 14:52:28,111 INFO L471 AbstractCegarLoop]: Abstraction has 1361 states and 1985 transitions. [2024-11-07 14:52:28,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 14:52:28,113 INFO L276 IsEmpty]: Start isEmpty. Operand 1361 states and 1985 transitions. [2024-11-07 14:52:28,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-11-07 14:52:28,117 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 14:52:28,117 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 14:52:28,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-07 14:52:28,118 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 14:52:28,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 14:52:28,120 INFO L85 PathProgramCache]: Analyzing trace with hash 708780073, now seen corresponding path program 1 times [2024-11-07 14:52:28,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 14:52:28,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849167914] [2024-11-07 14:52:28,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 14:52:28,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 14:52:28,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:28,616 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-07 14:52:28,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:28,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-07 14:52:28,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:28,624 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-07 14:52:28,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 14:52:28,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849167914] [2024-11-07 14:52:28,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849167914] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 14:52:28,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 14:52:28,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 14:52:28,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593376199] [2024-11-07 14:52:28,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 14:52:28,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 14:52:28,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 14:52:28,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 14:52:28,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 14:52:28,627 INFO L87 Difference]: Start difference. First operand 1361 states and 1985 transitions. Second operand has 5 states, 5 states have (on average 44.4) internal successors, (222), 4 states have internal predecessors, (222), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-07 14:52:29,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 14:52:29,194 INFO L93 Difference]: Finished difference Result 2591 states and 3790 transitions. [2024-11-07 14:52:29,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 14:52:29,195 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 44.4) internal successors, (222), 4 states have internal predecessors, (222), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 231 [2024-11-07 14:52:29,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 14:52:29,203 INFO L225 Difference]: With dead ends: 2591 [2024-11-07 14:52:29,204 INFO L226 Difference]: Without dead ends: 1322 [2024-11-07 14:52:29,205 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-07 14:52:29,207 INFO L432 NwaCegarLoop]: 1301 mSDtfsCounter, 53 mSDsluCounter, 3751 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 5052 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-07 14:52:29,207 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 5052 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-07 14:52:29,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states. [2024-11-07 14:52:29,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 1319. [2024-11-07 14:52:29,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1319 states, 1299 states have (on average 1.4449576597382603) internal successors, (1877), 1304 states have internal predecessors, (1877), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 12 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-07 14:52:29,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 1908 transitions. [2024-11-07 14:52:29,245 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 1908 transitions. Word has length 231 [2024-11-07 14:52:29,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 14:52:29,246 INFO L471 AbstractCegarLoop]: Abstraction has 1319 states and 1908 transitions. [2024-11-07 14:52:29,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 44.4) internal successors, (222), 4 states have internal predecessors, (222), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-07 14:52:29,246 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 1908 transitions. [2024-11-07 14:52:29,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-11-07 14:52:29,249 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 14:52:29,249 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 14:52:29,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-07 14:52:29,250 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 14:52:29,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 14:52:29,250 INFO L85 PathProgramCache]: Analyzing trace with hash 332973109, now seen corresponding path program 1 times [2024-11-07 14:52:29,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 14:52:29,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966932918] [2024-11-07 14:52:29,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 14:52:29,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 14:52:29,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:29,603 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-07 14:52:29,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:29,608 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-07 14:52:29,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:29,618 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-07 14:52:29,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 14:52:29,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966932918] [2024-11-07 14:52:29,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966932918] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 14:52:29,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 14:52:29,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 14:52:29,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900540314] [2024-11-07 14:52:29,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 14:52:29,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 14:52:29,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 14:52:29,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 14:52:29,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 14:52:29,620 INFO L87 Difference]: Start difference. First operand 1319 states and 1908 transitions. Second operand has 4 states, 4 states have (on average 55.5) internal successors, (222), 3 states have internal predecessors, (222), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-07 14:52:30,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 14:52:30,133 INFO L93 Difference]: Finished difference Result 2549 states and 3702 transitions. [2024-11-07 14:52:30,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 14:52:30,134 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.5) internal successors, (222), 3 states have internal predecessors, (222), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 231 [2024-11-07 14:52:30,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 14:52:30,143 INFO L225 Difference]: With dead ends: 2549 [2024-11-07 14:52:30,144 INFO L226 Difference]: Without dead ends: 1322 [2024-11-07 14:52:30,146 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 14:52:30,147 INFO L432 NwaCegarLoop]: 1314 mSDtfsCounter, 24 mSDsluCounter, 2479 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 3793 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-07 14:52:30,147 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 3793 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-07 14:52:30,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states. [2024-11-07 14:52:30,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 1319. [2024-11-07 14:52:30,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1319 states, 1299 states have (on average 1.4426481909160893) internal successors, (1874), 1304 states have internal predecessors, (1874), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 12 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-07 14:52:30,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 1905 transitions. [2024-11-07 14:52:30,198 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 1905 transitions. Word has length 231 [2024-11-07 14:52:30,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 14:52:30,199 INFO L471 AbstractCegarLoop]: Abstraction has 1319 states and 1905 transitions. [2024-11-07 14:52:30,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.5) internal successors, (222), 3 states have internal predecessors, (222), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-07 14:52:30,200 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 1905 transitions. [2024-11-07 14:52:30,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-11-07 14:52:30,204 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 14:52:30,205 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 14:52:30,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-07 14:52:30,206 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 14:52:30,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 14:52:30,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1394171853, now seen corresponding path program 1 times [2024-11-07 14:52:30,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 14:52:30,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206944485] [2024-11-07 14:52:30,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 14:52:30,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 14:52:30,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:30,551 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-07 14:52:30,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:30,557 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-07 14:52:30,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:30,563 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-07 14:52:30,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 14:52:30,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206944485] [2024-11-07 14:52:30,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206944485] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 14:52:30,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 14:52:30,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 14:52:30,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050655040] [2024-11-07 14:52:30,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 14:52:30,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 14:52:30,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 14:52:30,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 14:52:30,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 14:52:30,567 INFO L87 Difference]: Start difference. First operand 1319 states and 1905 transitions. Second operand has 4 states, 4 states have (on average 55.5) internal successors, (222), 3 states have internal predecessors, (222), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-07 14:52:31,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 14:52:31,172 INFO L93 Difference]: Finished difference Result 3120 states and 4530 transitions. [2024-11-07 14:52:31,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 14:52:31,172 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.5) internal successors, (222), 3 states have internal predecessors, (222), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 231 [2024-11-07 14:52:31,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 14:52:31,181 INFO L225 Difference]: With dead ends: 3120 [2024-11-07 14:52:31,181 INFO L226 Difference]: Without dead ends: 1893 [2024-11-07 14:52:31,183 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 14:52:31,184 INFO L432 NwaCegarLoop]: 1548 mSDtfsCounter, 620 mSDsluCounter, 2710 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 628 SdHoareTripleChecker+Valid, 4258 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-07 14:52:31,184 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [628 Valid, 4258 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-07 14:52:31,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1893 states. [2024-11-07 14:52:31,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1893 to 1885. [2024-11-07 14:52:31,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1885 states, 1859 states have (on average 1.444862829478214) internal successors, (2686), 1864 states have internal predecessors, (2686), 22 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (21), 18 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-07 14:52:31,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1885 states to 1885 states and 2729 transitions. [2024-11-07 14:52:31,245 INFO L78 Accepts]: Start accepts. Automaton has 1885 states and 2729 transitions. Word has length 231 [2024-11-07 14:52:31,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 14:52:31,246 INFO L471 AbstractCegarLoop]: Abstraction has 1885 states and 2729 transitions. [2024-11-07 14:52:31,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.5) internal successors, (222), 3 states have internal predecessors, (222), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-07 14:52:31,246 INFO L276 IsEmpty]: Start isEmpty. Operand 1885 states and 2729 transitions. [2024-11-07 14:52:31,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2024-11-07 14:52:31,250 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 14:52:31,250 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 14:52:31,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-07 14:52:31,250 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 14:52:31,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 14:52:31,251 INFO L85 PathProgramCache]: Analyzing trace with hash 2134175325, now seen corresponding path program 1 times [2024-11-07 14:52:31,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 14:52:31,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872316290] [2024-11-07 14:52:31,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 14:52:31,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 14:52:31,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:31,670 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-07 14:52:31,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:31,676 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-07 14:52:31,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:31,680 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-07 14:52:31,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:31,685 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-07 14:52:31,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:31,691 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-07 14:52:31,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 14:52:31,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872316290] [2024-11-07 14:52:31,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872316290] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 14:52:31,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 14:52:31,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-07 14:52:31,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365277845] [2024-11-07 14:52:31,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 14:52:31,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 14:52:31,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 14:52:31,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 14:52:31,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-07 14:52:31,693 INFO L87 Difference]: Start difference. First operand 1885 states and 2729 transitions. Second operand has 6 states, 6 states have (on average 37.833333333333336) internal successors, (227), 5 states have internal predecessors, (227), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-07 14:52:32,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 14:52:32,797 INFO L93 Difference]: Finished difference Result 4073 states and 5947 transitions. [2024-11-07 14:52:32,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 14:52:32,798 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 37.833333333333336) internal successors, (227), 5 states have internal predecessors, (227), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 246 [2024-11-07 14:52:32,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 14:52:32,809 INFO L225 Difference]: With dead ends: 4073 [2024-11-07 14:52:32,809 INFO L226 Difference]: Without dead ends: 2426 [2024-11-07 14:52:32,813 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-07 14:52:32,814 INFO L432 NwaCegarLoop]: 1389 mSDtfsCounter, 4536 mSDsluCounter, 2679 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4547 SdHoareTripleChecker+Valid, 4068 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-07 14:52:32,814 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4547 Valid, 4068 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-07 14:52:32,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2426 states. [2024-11-07 14:52:32,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2426 to 1456. [2024-11-07 14:52:32,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1456 states, 1435 states have (on average 1.4292682926829268) internal successors, (2051), 1440 states have internal predecessors, (2051), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-07 14:52:32,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 2084 transitions. [2024-11-07 14:52:32,880 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 2084 transitions. Word has length 246 [2024-11-07 14:52:32,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 14:52:32,883 INFO L471 AbstractCegarLoop]: Abstraction has 1456 states and 2084 transitions. [2024-11-07 14:52:32,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.833333333333336) internal successors, (227), 5 states have internal predecessors, (227), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-07 14:52:32,883 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 2084 transitions. [2024-11-07 14:52:32,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2024-11-07 14:52:32,886 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 14:52:32,886 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 14:52:32,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-07 14:52:32,887 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 14:52:32,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 14:52:32,887 INFO L85 PathProgramCache]: Analyzing trace with hash 293493169, now seen corresponding path program 1 times [2024-11-07 14:52:32,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 14:52:32,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584649417] [2024-11-07 14:52:32,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 14:52:32,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 14:52:33,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:33,344 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-07 14:52:33,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:33,348 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-07 14:52:33,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:33,351 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-07 14:52:33,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:33,354 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-07 14:52:33,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:33,359 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-07 14:52:33,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 14:52:33,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584649417] [2024-11-07 14:52:33,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584649417] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 14:52:33,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 14:52:33,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 14:52:33,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193126431] [2024-11-07 14:52:33,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 14:52:33,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 14:52:33,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 14:52:33,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 14:52:33,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 14:52:33,363 INFO L87 Difference]: Start difference. First operand 1456 states and 2084 transitions. Second operand has 5 states, 5 states have (on average 47.2) internal successors, (236), 4 states have internal predecessors, (236), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-07 14:52:33,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 14:52:33,917 INFO L93 Difference]: Finished difference Result 2334 states and 3394 transitions. [2024-11-07 14:52:33,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 14:52:33,917 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 47.2) internal successors, (236), 4 states have internal predecessors, (236), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 256 [2024-11-07 14:52:33,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 14:52:33,924 INFO L225 Difference]: With dead ends: 2334 [2024-11-07 14:52:33,925 INFO L226 Difference]: Without dead ends: 1417 [2024-11-07 14:52:33,927 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-07 14:52:33,930 INFO L432 NwaCegarLoop]: 1215 mSDtfsCounter, 53 mSDsluCounter, 3494 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 4709 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-07 14:52:33,930 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 4709 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-07 14:52:33,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1417 states. [2024-11-07 14:52:33,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1417 to 1414. [2024-11-07 14:52:33,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1414 states, 1393 states have (on average 1.4170854271356783) internal successors, (1974), 1398 states have internal predecessors, (1974), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-07 14:52:33,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1414 states to 1414 states and 2007 transitions. [2024-11-07 14:52:33,975 INFO L78 Accepts]: Start accepts. Automaton has 1414 states and 2007 transitions. Word has length 256 [2024-11-07 14:52:33,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 14:52:33,976 INFO L471 AbstractCegarLoop]: Abstraction has 1414 states and 2007 transitions. [2024-11-07 14:52:33,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 47.2) internal successors, (236), 4 states have internal predecessors, (236), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-07 14:52:33,976 INFO L276 IsEmpty]: Start isEmpty. Operand 1414 states and 2007 transitions. [2024-11-07 14:52:33,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2024-11-07 14:52:33,980 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 14:52:33,980 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 14:52:33,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-07 14:52:33,981 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 14:52:33,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 14:52:33,983 INFO L85 PathProgramCache]: Analyzing trace with hash -484839325, now seen corresponding path program 1 times [2024-11-07 14:52:33,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 14:52:33,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456290534] [2024-11-07 14:52:33,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 14:52:33,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 14:52:34,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:34,358 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-07 14:52:34,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:34,361 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-07 14:52:34,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:34,363 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-07 14:52:34,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:34,366 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-07 14:52:34,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:34,368 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-07 14:52:34,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 14:52:34,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456290534] [2024-11-07 14:52:34,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456290534] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 14:52:34,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 14:52:34,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 14:52:34,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947908625] [2024-11-07 14:52:34,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 14:52:34,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 14:52:34,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 14:52:34,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 14:52:34,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 14:52:34,371 INFO L87 Difference]: Start difference. First operand 1414 states and 2007 transitions. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-07 14:52:34,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 14:52:34,860 INFO L93 Difference]: Finished difference Result 2267 states and 3277 transitions. [2024-11-07 14:52:34,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 14:52:34,861 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 256 [2024-11-07 14:52:34,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 14:52:34,868 INFO L225 Difference]: With dead ends: 2267 [2024-11-07 14:52:34,868 INFO L226 Difference]: Without dead ends: 1417 [2024-11-07 14:52:34,870 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 14:52:34,870 INFO L432 NwaCegarLoop]: 1229 mSDtfsCounter, 24 mSDsluCounter, 2306 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 3535 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-07 14:52:34,870 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 3535 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-07 14:52:34,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1417 states. [2024-11-07 14:52:34,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1417 to 1414. [2024-11-07 14:52:34,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1414 states, 1393 states have (on average 1.4149318018664752) internal successors, (1971), 1398 states have internal predecessors, (1971), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-07 14:52:34,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1414 states to 1414 states and 2004 transitions. [2024-11-07 14:52:34,915 INFO L78 Accepts]: Start accepts. Automaton has 1414 states and 2004 transitions. Word has length 256 [2024-11-07 14:52:34,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 14:52:34,916 INFO L471 AbstractCegarLoop]: Abstraction has 1414 states and 2004 transitions. [2024-11-07 14:52:34,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-07 14:52:34,917 INFO L276 IsEmpty]: Start isEmpty. Operand 1414 states and 2004 transitions. [2024-11-07 14:52:34,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2024-11-07 14:52:34,919 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 14:52:34,920 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 14:52:34,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-07 14:52:34,920 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 14:52:34,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 14:52:34,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1942921113, now seen corresponding path program 1 times [2024-11-07 14:52:34,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 14:52:34,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435556668] [2024-11-07 14:52:34,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 14:52:34,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 14:52:35,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:35,858 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-07 14:52:35,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:35,863 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-07 14:52:35,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:35,866 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-07 14:52:35,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:35,870 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-07 14:52:35,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:35,874 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-07 14:52:35,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 14:52:35,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435556668] [2024-11-07 14:52:35,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435556668] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 14:52:35,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339788336] [2024-11-07 14:52:35,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 14:52:35,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 14:52:35,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 14:52:35,878 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) [2024-11-07 14:52:35,880 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 [2024-11-07 14:52:36,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:36,555 INFO L255 TraceCheckSpWp]: Trace formula consists of 1263 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-07 14:52:36,566 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 14:52:36,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-07 14:52:37,026 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-07 14:52:37,042 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-07 14:52:37,042 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 14:52:37,370 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-07 14:52:37,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339788336] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 14:52:37,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 14:52:37,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 5] total 13 [2024-11-07 14:52:37,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332328294] [2024-11-07 14:52:37,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 14:52:37,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-07 14:52:37,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 14:52:37,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-07 14:52:37,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-11-07 14:52:37,374 INFO L87 Difference]: Start difference. First operand 1414 states and 2004 transitions. Second operand has 13 states, 13 states have (on average 43.15384615384615) internal successors, (561), 12 states have internal predecessors, (561), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-07 14:52:38,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 14:52:38,555 INFO L93 Difference]: Finished difference Result 3244 states and 4587 transitions. [2024-11-07 14:52:38,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-07 14:52:38,556 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 43.15384615384615) internal successors, (561), 12 states have internal predecessors, (561), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 256 [2024-11-07 14:52:38,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 14:52:38,566 INFO L225 Difference]: With dead ends: 3244 [2024-11-07 14:52:38,566 INFO L226 Difference]: Without dead ends: 2365 [2024-11-07 14:52:38,568 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 508 SyntacticMatches, 7 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2024-11-07 14:52:38,569 INFO L432 NwaCegarLoop]: 1548 mSDtfsCounter, 3602 mSDsluCounter, 6837 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3633 SdHoareTripleChecker+Valid, 8385 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-07 14:52:38,569 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3633 Valid, 8385 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-07 14:52:38,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2365 states. [2024-11-07 14:52:38,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2365 to 2068. [2024-11-07 14:52:38,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2068 states, 2035 states have (on average 1.3862407862407862) internal successors, (2821), 2040 states have internal predecessors, (2821), 28 states have call successors, (28), 4 states have call predecessors, (28), 4 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-07 14:52:38,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2068 states to 2068 states and 2876 transitions. [2024-11-07 14:52:38,648 INFO L78 Accepts]: Start accepts. Automaton has 2068 states and 2876 transitions. Word has length 256 [2024-11-07 14:52:38,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 14:52:38,650 INFO L471 AbstractCegarLoop]: Abstraction has 2068 states and 2876 transitions. [2024-11-07 14:52:38,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 43.15384615384615) internal successors, (561), 12 states have internal predecessors, (561), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-07 14:52:38,650 INFO L276 IsEmpty]: Start isEmpty. Operand 2068 states and 2876 transitions. [2024-11-07 14:52:38,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2024-11-07 14:52:38,658 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 14:52:38,658 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 14:52:38,680 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-07 14:52:38,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-07 14:52:38,860 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 14:52:38,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 14:52:38,860 INFO L85 PathProgramCache]: Analyzing trace with hash -15120626, now seen corresponding path program 1 times [2024-11-07 14:52:38,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 14:52:38,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775843208] [2024-11-07 14:52:38,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 14:52:38,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 14:52:39,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:40,671 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-07 14:52:40,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:40,675 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-07 14:52:40,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:40,678 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-07 14:52:40,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:40,681 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-07 14:52:40,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:40,684 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 234 proven. 5 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2024-11-07 14:52:40,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 14:52:40,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775843208] [2024-11-07 14:52:40,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775843208] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 14:52:40,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079564698] [2024-11-07 14:52:40,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 14:52:40,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 14:52:40,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 14:52:40,687 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) [2024-11-07 14:52:40,689 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 [2024-11-07 14:52:41,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:41,621 INFO L255 TraceCheckSpWp]: Trace formula consists of 2403 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-07 14:52:41,633 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 14:52:41,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-07 14:52:42,024 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-07 14:52:42,053 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 234 proven. 5 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2024-11-07 14:52:42,053 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 14:52:42,335 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 234 proven. 5 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2024-11-07 14:52:42,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079564698] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 14:52:42,336 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 14:52:42,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 5] total 14 [2024-11-07 14:52:42,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58712525] [2024-11-07 14:52:42,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 14:52:42,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-07 14:52:42,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 14:52:42,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-07 14:52:42,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-07 14:52:42,339 INFO L87 Difference]: Start difference. First operand 2068 states and 2876 transitions. Second operand has 14 states, 14 states have (on average 46.285714285714285) internal successors, (648), 13 states have internal predecessors, (648), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-07 14:52:43,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 14:52:43,413 INFO L93 Difference]: Finished difference Result 3985 states and 5573 transitions. [2024-11-07 14:52:43,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-07 14:52:43,414 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 46.285714285714285) internal successors, (648), 13 states have internal predecessors, (648), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 487 [2024-11-07 14:52:43,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 14:52:43,423 INFO L225 Difference]: With dead ends: 3985 [2024-11-07 14:52:43,424 INFO L226 Difference]: Without dead ends: 2365 [2024-11-07 14:52:43,427 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 996 GetRequests, 971 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2024-11-07 14:52:43,428 INFO L432 NwaCegarLoop]: 1574 mSDtfsCounter, 2571 mSDsluCounter, 8846 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2601 SdHoareTripleChecker+Valid, 10420 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-07 14:52:43,428 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2601 Valid, 10420 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-07 14:52:43,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2365 states. [2024-11-07 14:52:43,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2365 to 2071. [2024-11-07 14:52:43,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2071 states, 2038 states have (on average 1.3846908734052994) internal successors, (2822), 2043 states have internal predecessors, (2822), 28 states have call successors, (28), 4 states have call predecessors, (28), 4 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-07 14:52:43,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2071 states to 2071 states and 2877 transitions. [2024-11-07 14:52:43,501 INFO L78 Accepts]: Start accepts. Automaton has 2071 states and 2877 transitions. Word has length 487 [2024-11-07 14:52:43,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 14:52:43,502 INFO L471 AbstractCegarLoop]: Abstraction has 2071 states and 2877 transitions. [2024-11-07 14:52:43,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 46.285714285714285) internal successors, (648), 13 states have internal predecessors, (648), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-07 14:52:43,506 INFO L276 IsEmpty]: Start isEmpty. Operand 2071 states and 2877 transitions. [2024-11-07 14:52:43,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 701 [2024-11-07 14:52:43,521 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 14:52:43,522 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 14:52:43,547 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-07 14:52:43,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 14:52:43,727 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 14:52:43,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 14:52:43,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1772522056, now seen corresponding path program 1 times [2024-11-07 14:52:43,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 14:52:43,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611544215] [2024-11-07 14:52:43,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 14:52:43,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 14:52:44,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:48,090 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-07 14:52:48,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:48,094 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-07 14:52:48,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:48,097 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-07 14:52:48,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:48,100 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-07 14:52:48,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:48,104 INFO L134 CoverageAnalysis]: Checked inductivity of 908 backedges. 0 proven. 884 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-07 14:52:48,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 14:52:48,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611544215] [2024-11-07 14:52:48,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611544215] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 14:52:48,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726286073] [2024-11-07 14:52:48,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 14:52:48,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 14:52:48,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 14:52:48,107 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) [2024-11-07 14:52:48,109 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 [2024-11-07 14:52:49,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:49,212 INFO L255 TraceCheckSpWp]: Trace formula consists of 3384 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-07 14:52:49,223 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 14:52:49,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-07 14:52:49,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-07 14:52:49,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-07 14:52:50,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-07 14:52:50,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-07 14:52:50,243 INFO L134 CoverageAnalysis]: Checked inductivity of 908 backedges. 0 proven. 884 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-07 14:52:50,243 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 14:52:51,012 INFO L134 CoverageAnalysis]: Checked inductivity of 908 backedges. 0 proven. 884 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-07 14:52:51,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726286073] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 14:52:51,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 14:52:51,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 8] total 25 [2024-11-07 14:52:51,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850172842] [2024-11-07 14:52:51,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 14:52:51,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-07 14:52:51,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 14:52:51,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-07 14:52:51,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=416, Unknown=0, NotChecked=0, Total=600 [2024-11-07 14:52:51,019 INFO L87 Difference]: Start difference. First operand 2071 states and 2877 transitions. Second operand has 25 states, 25 states have (on average 75.72) internal successors, (1893), 24 states have internal predecessors, (1893), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-07 14:52:52,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 14:52:52,988 INFO L93 Difference]: Finished difference Result 5002 states and 6963 transitions. [2024-11-07 14:52:52,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-07 14:52:52,989 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 75.72) internal successors, (1893), 24 states have internal predecessors, (1893), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 700 [2024-11-07 14:52:52,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 14:52:53,010 INFO L225 Difference]: With dead ends: 5002 [2024-11-07 14:52:53,010 INFO L226 Difference]: Without dead ends: 4123 [2024-11-07 14:52:53,016 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1433 GetRequests, 1393 SyntacticMatches, 7 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=324, Invalid=866, Unknown=0, NotChecked=0, Total=1190 [2024-11-07 14:52:53,016 INFO L432 NwaCegarLoop]: 2682 mSDtfsCounter, 5449 mSDsluCounter, 21629 mSDsCounter, 0 mSdLazyCounter, 1531 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5528 SdHoareTripleChecker+Valid, 24311 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-07 14:52:53,016 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5528 Valid, 24311 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1531 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-07 14:52:53,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4123 states. [2024-11-07 14:52:53,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4123 to 3826. [2024-11-07 14:52:53,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3826 states, 3769 states have (on average 1.358981162111966) internal successors, (5122), 3774 states have internal predecessors, (5122), 52 states have call successors, (52), 4 states have call predecessors, (52), 4 states have return successors, (51), 48 states have call predecessors, (51), 51 states have call successors, (51) [2024-11-07 14:52:53,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3826 states to 3826 states and 5225 transitions. [2024-11-07 14:52:53,124 INFO L78 Accepts]: Start accepts. Automaton has 3826 states and 5225 transitions. Word has length 700 [2024-11-07 14:52:53,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 14:52:53,125 INFO L471 AbstractCegarLoop]: Abstraction has 3826 states and 5225 transitions. [2024-11-07 14:52:53,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 75.72) internal successors, (1893), 24 states have internal predecessors, (1893), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-07 14:52:53,126 INFO L276 IsEmpty]: Start isEmpty. Operand 3826 states and 5225 transitions. [2024-11-07 14:52:53,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1163 [2024-11-07 14:52:53,162 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 14:52:53,163 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 14:52:53,192 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-07 14:52:53,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 14:52:53,363 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 14:52:53,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 14:52:53,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1015195160, now seen corresponding path program 1 times [2024-11-07 14:52:53,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 14:52:53,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418462096] [2024-11-07 14:52:53,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 14:52:53,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 14:52:54,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:59,824 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-07 14:52:59,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:59,828 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-07 14:52:59,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:59,831 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-07 14:52:59,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:59,834 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-07 14:52:59,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:59,840 INFO L134 CoverageAnalysis]: Checked inductivity of 3911 backedges. 1851 proven. 896 refuted. 0 times theorem prover too weak. 1164 trivial. 0 not checked. [2024-11-07 14:52:59,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 14:52:59,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418462096] [2024-11-07 14:52:59,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418462096] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 14:52:59,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054983746] [2024-11-07 14:52:59,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 14:52:59,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 14:52:59,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 14:52:59,843 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) [2024-11-07 14:52:59,845 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 [2024-11-07 14:53:01,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:53:01,511 INFO L255 TraceCheckSpWp]: Trace formula consists of 5664 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-07 14:53:01,525 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 14:53:01,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-07 14:53:01,789 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-07 14:53:01,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-07 14:53:02,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-07 14:53:02,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-07 14:53:02,309 INFO L134 CoverageAnalysis]: Checked inductivity of 3911 backedges. 1851 proven. 896 refuted. 0 times theorem prover too weak. 1164 trivial. 0 not checked. [2024-11-07 14:53:02,310 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 14:53:02,992 INFO L134 CoverageAnalysis]: Checked inductivity of 3911 backedges. 1851 proven. 896 refuted. 0 times theorem prover too weak. 1164 trivial. 0 not checked. [2024-11-07 14:53:02,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054983746] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 14:53:02,992 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 14:53:02,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 8] total 26 [2024-11-07 14:53:02,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752508266] [2024-11-07 14:53:02,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 14:53:02,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-07 14:53:02,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 14:53:02,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-07 14:53:02,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=462, Unknown=0, NotChecked=0, Total=650 [2024-11-07 14:53:02,998 INFO L87 Difference]: Start difference. First operand 3826 states and 5225 transitions. Second operand has 26 states, 26 states have (on average 76.15384615384616) internal successors, (1980), 25 states have internal predecessors, (1980), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-07 14:53:05,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 14:53:05,201 INFO L93 Difference]: Finished difference Result 6622 states and 9122 transitions. [2024-11-07 14:53:05,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-07 14:53:05,202 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 76.15384615384616) internal successors, (1980), 25 states have internal predecessors, (1980), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 1162 [2024-11-07 14:53:05,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 14:53:05,214 INFO L225 Difference]: With dead ends: 6622 [2024-11-07 14:53:05,214 INFO L226 Difference]: Without dead ends: 4123 [2024-11-07 14:53:05,218 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2364 GetRequests, 2318 SyntacticMatches, 7 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=375, Invalid=1265, Unknown=0, NotChecked=0, Total=1640 [2024-11-07 14:53:05,219 INFO L432 NwaCegarLoop]: 2705 mSDtfsCounter, 4957 mSDsluCounter, 30661 mSDsCounter, 0 mSdLazyCounter, 1904 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5035 SdHoareTripleChecker+Valid, 33366 SdHoareTripleChecker+Invalid, 1987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-07 14:53:05,219 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5035 Valid, 33366 Invalid, 1987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1904 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-07 14:53:05,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4123 states. [2024-11-07 14:53:05,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4123 to 3829. [2024-11-07 14:53:05,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3829 states, 3772 states have (on average 1.357370095440085) internal successors, (5120), 3777 states have internal predecessors, (5120), 52 states have call successors, (52), 4 states have call predecessors, (52), 4 states have return successors, (51), 48 states have call predecessors, (51), 51 states have call successors, (51) [2024-11-07 14:53:05,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3829 states to 3829 states and 5223 transitions. [2024-11-07 14:53:05,317 INFO L78 Accepts]: Start accepts. Automaton has 3829 states and 5223 transitions. Word has length 1162 [2024-11-07 14:53:05,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 14:53:05,318 INFO L471 AbstractCegarLoop]: Abstraction has 3829 states and 5223 transitions. [2024-11-07 14:53:05,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 76.15384615384616) internal successors, (1980), 25 states have internal predecessors, (1980), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-07 14:53:05,319 INFO L276 IsEmpty]: Start isEmpty. Operand 3829 states and 5223 transitions. [2024-11-07 14:53:05,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1589 [2024-11-07 14:53:05,338 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 14:53:05,339 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 14:53:05,377 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-07 14:53:05,540 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,SelfDestructingSolverStorable14 [2024-11-07 14:53:05,540 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 14:53:05,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 14:53:05,541 INFO L85 PathProgramCache]: Analyzing trace with hash 808856026, now seen corresponding path program 2 times [2024-11-07 14:53:05,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 14:53:05,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688812540] [2024-11-07 14:53:05,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 14:53:05,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 14:53:06,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:53:09,561 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-07 14:53:09,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:53:09,563 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-07 14:53:09,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:53:09,566 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-07 14:53:09,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:53:09,568 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-07 14:53:09,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:53:09,574 INFO L134 CoverageAnalysis]: Checked inductivity of 6668 backedges. 1320 proven. 1 refuted. 0 times theorem prover too weak. 5347 trivial. 0 not checked. [2024-11-07 14:53:09,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 14:53:09,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688812540] [2024-11-07 14:53:09,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688812540] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 14:53:09,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822383454] [2024-11-07 14:53:09,575 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 14:53:09,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 14:53:09,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 14:53:09,579 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) [2024-11-07 14:53:09,581 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 [2024-11-07 14:53:10,876 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-07 14:53:10,876 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 14:53:10,883 INFO L255 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-07 14:53:10,906 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 14:53:10,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-07 14:53:11,604 INFO L134 CoverageAnalysis]: Checked inductivity of 6668 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6668 trivial. 0 not checked. [2024-11-07 14:53:11,605 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 14:53:11,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822383454] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 14:53:11,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 14:53:11,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [8] total 16 [2024-11-07 14:53:11,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476719302] [2024-11-07 14:53:11,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 14:53:11,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-07 14:53:11,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 14:53:11,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-07 14:53:11,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2024-11-07 14:53:11,608 INFO L87 Difference]: Start difference. First operand 3829 states and 5223 transitions. Second operand has 10 states, 10 states have (on average 24.2) internal successors, (242), 10 states have internal predecessors, (242), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-07 14:53:12,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 14:53:12,781 INFO L93 Difference]: Finished difference Result 4675 states and 6479 transitions. [2024-11-07 14:53:12,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 14:53:12,782 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 24.2) internal successors, (242), 10 states have internal predecessors, (242), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 1588 [2024-11-07 14:53:12,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 14:53:12,796 INFO L225 Difference]: With dead ends: 4675 [2024-11-07 14:53:12,797 INFO L226 Difference]: Without dead ends: 3835 [2024-11-07 14:53:12,800 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1610 GetRequests, 1589 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2024-11-07 14:53:12,801 INFO L432 NwaCegarLoop]: 1236 mSDtfsCounter, 388 mSDsluCounter, 8734 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 9970 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-07 14:53:12,801 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 9970 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 927 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-07 14:53:12,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3835 states. [2024-11-07 14:53:12,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3835 to 3832. [2024-11-07 14:53:12,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3832 states, 3775 states have (on average 1.3570860927152317) internal successors, (5123), 3780 states have internal predecessors, (5123), 52 states have call successors, (52), 4 states have call predecessors, (52), 4 states have return successors, (51), 48 states have call predecessors, (51), 51 states have call successors, (51) [2024-11-07 14:53:12,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3832 states to 3832 states and 5226 transitions. [2024-11-07 14:53:12,934 INFO L78 Accepts]: Start accepts. Automaton has 3832 states and 5226 transitions. Word has length 1588 [2024-11-07 14:53:12,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 14:53:12,937 INFO L471 AbstractCegarLoop]: Abstraction has 3832 states and 5226 transitions. [2024-11-07 14:53:12,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.2) internal successors, (242), 10 states have internal predecessors, (242), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-07 14:53:12,938 INFO L276 IsEmpty]: Start isEmpty. Operand 3832 states and 5226 transitions. [2024-11-07 14:53:12,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1589 [2024-11-07 14:53:12,974 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 14:53:12,974 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 14:53:12,996 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-07 14:53:13,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-07 14:53:13,176 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 14:53:13,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 14:53:13,176 INFO L85 PathProgramCache]: Analyzing trace with hash 386329554, now seen corresponding path program 1 times [2024-11-07 14:53:13,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 14:53:13,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233546779] [2024-11-07 14:53:13,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 14:53:13,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 14:53:13,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:53:15,088 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-07 14:53:15,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:53:15,090 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-07 14:53:15,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:53:15,091 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-07 14:53:15,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:53:15,092 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-07 14:53:15,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:53:15,097 INFO L134 CoverageAnalysis]: Checked inductivity of 6668 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6668 trivial. 0 not checked. [2024-11-07 14:53:15,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 14:53:15,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233546779] [2024-11-07 14:53:15,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233546779] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 14:53:15,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 14:53:15,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 14:53:15,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678425524] [2024-11-07 14:53:15,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 14:53:15,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 14:53:15,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 14:53:15,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 14:53:15,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 14:53:15,099 INFO L87 Difference]: Start difference. First operand 3832 states and 5226 transitions. Second operand has 5 states, 5 states have (on average 48.4) internal successors, (242), 4 states have internal predecessors, (242), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-07 14:53:15,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 14:53:15,619 INFO L93 Difference]: Finished difference Result 4681 states and 6526 transitions. [2024-11-07 14:53:15,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 14:53:15,619 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 48.4) internal successors, (242), 4 states have internal predecessors, (242), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 1588 [2024-11-07 14:53:15,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 14:53:15,628 INFO L225 Difference]: With dead ends: 4681 [2024-11-07 14:53:15,628 INFO L226 Difference]: Without dead ends: 3829 [2024-11-07 14:53:15,629 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-07 14:53:15,630 INFO L432 NwaCegarLoop]: 1214 mSDtfsCounter, 32 mSDsluCounter, 3490 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 4704 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-07 14:53:15,630 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 4704 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-07 14:53:15,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3829 states. [2024-11-07 14:53:15,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3829 to 3823. [2024-11-07 14:53:15,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3823 states, 3766 states have (on average 1.35740839086564) internal successors, (5112), 3771 states have internal predecessors, (5112), 52 states have call successors, (52), 4 states have call predecessors, (52), 4 states have return successors, (51), 48 states have call predecessors, (51), 51 states have call successors, (51) [2024-11-07 14:53:15,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3823 states to 3823 states and 5215 transitions. [2024-11-07 14:53:15,721 INFO L78 Accepts]: Start accepts. Automaton has 3823 states and 5215 transitions. Word has length 1588 [2024-11-07 14:53:15,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 14:53:15,724 INFO L471 AbstractCegarLoop]: Abstraction has 3823 states and 5215 transitions. [2024-11-07 14:53:15,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.4) internal successors, (242), 4 states have internal predecessors, (242), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-07 14:53:15,724 INFO L276 IsEmpty]: Start isEmpty. Operand 3823 states and 5215 transitions. [2024-11-07 14:53:15,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1590 [2024-11-07 14:53:15,743 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 14:53:15,745 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 14:53:15,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-07 14:53:15,745 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 14:53:15,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 14:53:15,746 INFO L85 PathProgramCache]: Analyzing trace with hash -976445934, now seen corresponding path program 1 times [2024-11-07 14:53:15,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 14:53:15,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573057438] [2024-11-07 14:53:15,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 14:53:15,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 14:53:16,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:53:19,572 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-07 14:53:19,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:53:19,574 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-07 14:53:19,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:53:19,575 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-07 14:53:19,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:53:19,576 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-07 14:53:19,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:53:19,581 INFO L134 CoverageAnalysis]: Checked inductivity of 6668 backedges. 1320 proven. 1 refuted. 0 times theorem prover too weak. 5347 trivial. 0 not checked. [2024-11-07 14:53:19,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 14:53:19,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573057438] [2024-11-07 14:53:19,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573057438] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 14:53:19,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704881413] [2024-11-07 14:53:19,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 14:53:19,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 14:53:19,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 14:53:19,584 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) [2024-11-07 14:53:19,585 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 [2024-11-07 14:53:21,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:53:21,971 INFO L255 TraceCheckSpWp]: Trace formula consists of 7627 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-07 14:53:21,994 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 14:53:21,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-07 14:53:22,290 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-07 14:53:22,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-07 14:53:22,587 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-07 14:53:22,739 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-07 14:53:22,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-07 14:53:23,044 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-07 14:53:23,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-07 14:53:23,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-07 14:53:23,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-07 14:53:23,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-07 14:53:23,696 INFO L134 CoverageAnalysis]: Checked inductivity of 6668 backedges. 0 proven. 6644 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-07 14:53:23,697 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 14:53:25,498 INFO L134 CoverageAnalysis]: Checked inductivity of 6668 backedges. 0 proven. 6644 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-07 14:53:25,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704881413] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 14:53:25,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 14:53:25,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 15, 14] total 32 [2024-11-07 14:53:25,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17865330] [2024-11-07 14:53:25,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 14:53:25,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-07 14:53:25,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 14:53:25,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-07 14:53:25,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=709, Unknown=0, NotChecked=0, Total=992 [2024-11-07 14:53:25,506 INFO L87 Difference]: Start difference. First operand 3823 states and 5215 transitions. Second operand has 32 states, 32 states have (on average 105.625) internal successors, (3380), 31 states have internal predecessors, (3380), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-07 14:53:30,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 14:53:30,264 INFO L93 Difference]: Finished difference Result 7286 states and 10032 transitions. [2024-11-07 14:53:30,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2024-11-07 14:53:30,266 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 105.625) internal successors, (3380), 31 states have internal predecessors, (3380), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 1589 [2024-11-07 14:53:30,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 14:53:30,288 INFO L225 Difference]: With dead ends: 7286 [2024-11-07 14:53:30,288 INFO L226 Difference]: Without dead ends: 6116 [2024-11-07 14:53:30,296 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3240 GetRequests, 3156 SyntacticMatches, 7 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1819 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1320, Invalid=4842, Unknown=0, NotChecked=0, Total=6162 [2024-11-07 14:53:30,297 INFO L432 NwaCegarLoop]: 4750 mSDtfsCounter, 13209 mSDsluCounter, 68523 mSDsCounter, 0 mSdLazyCounter, 3405 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13374 SdHoareTripleChecker+Valid, 73273 SdHoareTripleChecker+Invalid, 3559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 3405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-07 14:53:30,297 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13374 Valid, 73273 Invalid, 3559 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [154 Valid, 3405 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-07 14:53:30,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6116 states. [2024-11-07 14:53:30,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6116 to 5961. [2024-11-07 14:53:30,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5961 states, 5864 states have (on average 1.3415757162346522) internal successors, (7867), 5869 states have internal predecessors, (7867), 92 states have call successors, (92), 4 states have call predecessors, (92), 4 states have return successors, (91), 88 states have call predecessors, (91), 91 states have call successors, (91) [2024-11-07 14:53:30,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5961 states to 5961 states and 8050 transitions. [2024-11-07 14:53:30,510 INFO L78 Accepts]: Start accepts. Automaton has 5961 states and 8050 transitions. Word has length 1589 [2024-11-07 14:53:30,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 14:53:30,512 INFO L471 AbstractCegarLoop]: Abstraction has 5961 states and 8050 transitions. [2024-11-07 14:53:30,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 105.625) internal successors, (3380), 31 states have internal predecessors, (3380), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-07 14:53:30,514 INFO L276 IsEmpty]: Start isEmpty. Operand 5961 states and 8050 transitions. [2024-11-07 14:53:30,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2514 [2024-11-07 14:53:30,592 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 14:53:30,593 INFO L215 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 14:53:30,636 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-07 14:53:30,793 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,SelfDestructingSolverStorable17 [2024-11-07 14:53:30,794 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 14:53:30,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 14:53:30,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1587010478, now seen corresponding path program 1 times [2024-11-07 14:53:30,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 14:53:30,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353762598] [2024-11-07 14:53:30,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 14:53:30,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 14:53:32,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat