./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/insertion_sort-2-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4f9af400 extending candidate: java ['java'] extending candidate: /usr/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/oracle-jdk-bin-*/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/openjdk-*/bin/java ['java', '/usr/bin/java'] extending candidate: /usr/lib/jvm/java-*-openjdk-amd64/bin/java ['java', '/usr/bin/java', '/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java', '/usr/lib/jvm/java-17-openjdk-amd64/bin/java', '/usr/lib/jvm/java-11-openjdk-amd64/bin/java', '/usr/lib/jvm/java-1.17.0-openjdk-amd64/bin/java'] ['/root/.sdkman/candidates/java/21.0.5-tem/bin/java', '-Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config', '-Xmx15G', '-Xms4m', '-jar', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar', '-data', '@noDefault', '-ultimatedata', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data', '-tc', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml', '-i', '../sv-benchmarks/c/loops/insertion_sort-2-2.c', '-s', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf', '--cacsl2boogietranslator.entry.function', 'main', '--witnessprinter.witness.directory', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux', '--witnessprinter.witness.filename', 'witness', '--witnessprinter.write.witness.besides.input.file', 'false', '--witnessprinter.graph.data.specification', 'CHECK( init(main()), LTL(G ! call(reach_error())) )\n\n', '--witnessprinter.graph.data.producer', 'Automizer', '--witnessprinter.graph.data.architecture', '32bit', '--witnessprinter.graph.data.programhash', 'f08b02f494e898be2e8c5098de245f701022f3f8b39ac6682b3bca3a03512826'] 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/loops/insertion_sort-2-2.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f08b02f494e898be2e8c5098de245f701022f3f8b39ac6682b3bca3a03512826 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-06 22:32:15,581 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 22:32:15,667 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-06 22:32:15,673 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 22:32:15,674 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 22:32:15,697 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 22:32:15,698 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 22:32:15,698 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 22:32:15,698 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 22:32:15,698 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 22:32:15,698 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 22:32:15,698 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 22:32:15,698 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 22:32:15,698 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 22:32:15,699 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 22:32:15,699 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 22:32:15,699 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 22:32:15,699 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-06 22:32:15,699 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-06 22:32:15,699 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-06 22:32:15,699 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 22:32:15,699 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 22:32:15,699 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 22:32:15,699 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 22:32:15,699 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 22:32:15,699 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-06 22:32:15,699 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 22:32:15,699 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 22:32:15,700 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 22:32:15,700 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 22:32:15,700 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 22:32:15,700 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 22:32:15,700 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 22:32:15,700 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 22:32:15,700 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 22:32:15,700 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 22:32:15,700 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-06 22:32:15,700 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-06 22:32:15,700 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 22:32:15,700 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 22:32:15,700 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 22:32:15,701 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 22:32:15,701 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 -> f08b02f494e898be2e8c5098de245f701022f3f8b39ac6682b3bca3a03512826 [2024-11-06 22:32:15,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 22:32:15,979 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 22:32:15,980 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 22:32:15,982 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 22:32:15,982 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 22:32:15,984 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/insertion_sort-2-2.c [2024-11-06 22:32:17,285 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 22:32:17,487 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 22:32:17,488 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/loops/insertion_sort-2-2.c [2024-11-06 22:32:17,493 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a3c93ec69/e2585263f6f943928ad9edab0e01fc30/FLAG3315df550 [2024-11-06 22:32:17,509 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a3c93ec69/e2585263f6f943928ad9edab0e01fc30 [2024-11-06 22:32:17,512 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 22:32:17,514 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-06 22:32:17,515 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 22:32:17,515 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 22:32:17,518 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 22:32:17,519 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:32:17" (1/1) ... [2024-11-06 22:32:17,521 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e10ccaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:32:17, skipping insertion in model container [2024-11-06 22:32:17,521 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:32:17" (1/1) ... [2024-11-06 22:32:17,534 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 22:32:17,653 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/loops/insertion_sort-2-2.c[330,343] [2024-11-06 22:32:17,674 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 22:32:17,683 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 22:32:17,690 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/loops/insertion_sort-2-2.c[330,343] [2024-11-06 22:32:17,697 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 22:32:17,712 INFO L204 MainTranslator]: Completed translation [2024-11-06 22:32:17,713 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:32:17 WrapperNode [2024-11-06 22:32:17,713 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 22:32:17,714 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 22:32:17,714 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 22:32:17,715 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 22:32:17,720 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:32:17" (1/1) ... [2024-11-06 22:32:17,728 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:32:17" (1/1) ... [2024-11-06 22:32:17,749 INFO L138 Inliner]: procedures = 15, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 83 [2024-11-06 22:32:17,752 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 22:32:17,752 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 22:32:17,752 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 22:32:17,752 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 22:32:17,761 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:32:17" (1/1) ... [2024-11-06 22:32:17,761 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:32:17" (1/1) ... [2024-11-06 22:32:17,764 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:32:17" (1/1) ... [2024-11-06 22:32:17,780 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-06 22:32:17,781 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:32:17" (1/1) ... [2024-11-06 22:32:17,781 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:32:17" (1/1) ... [2024-11-06 22:32:17,788 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:32:17" (1/1) ... [2024-11-06 22:32:17,794 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:32:17" (1/1) ... [2024-11-06 22:32:17,795 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:32:17" (1/1) ... [2024-11-06 22:32:17,797 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:32:17" (1/1) ... [2024-11-06 22:32:17,798 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 22:32:17,803 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 22:32:17,803 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 22:32:17,803 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 22:32:17,804 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:32:17" (1/1) ... [2024-11-06 22:32:17,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 22:32:17,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:32:17,838 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-06 22:32:17,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-06 22:32:17,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 22:32:17,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-06 22:32:17,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-06 22:32:17,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-06 22:32:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-06 22:32:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-06 22:32:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 22:32:17,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 22:32:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-06 22:32:17,866 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-06 22:32:17,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-06 22:32:17,933 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 22:32:17,935 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 22:32:18,066 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-11-06 22:32:18,067 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 22:32:18,073 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 22:32:18,074 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-06 22:32:18,074 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:32:18 BoogieIcfgContainer [2024-11-06 22:32:18,074 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 22:32:18,077 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 22:32:18,077 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 22:32:18,081 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 22:32:18,081 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:32:17" (1/3) ... [2024-11-06 22:32:18,082 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a641c88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:32:18, skipping insertion in model container [2024-11-06 22:32:18,082 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:32:17" (2/3) ... [2024-11-06 22:32:18,082 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a641c88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:32:18, skipping insertion in model container [2024-11-06 22:32:18,083 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:32:18" (3/3) ... [2024-11-06 22:32:18,084 INFO L112 eAbstractionObserver]: Analyzing ICFG insertion_sort-2-2.c [2024-11-06 22:32:18,097 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 22:32:18,097 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-06 22:32:18,147 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 22:32:18,160 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;@62092af5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 22:32:18,161 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-06 22:32:18,165 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:32:18,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-06 22:32:18,170 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:32:18,170 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:32:18,170 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:32:18,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:32:18,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1467561831, now seen corresponding path program 1 times [2024-11-06 22:32:18,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:32:18,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447805076] [2024-11-06 22:32:18,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:32:18,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:32:18,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:32:18,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:32:18,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:32:18,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447805076] [2024-11-06 22:32:18,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447805076] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 22:32:18,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 22:32:18,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 22:32:18,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861768557] [2024-11-06 22:32:18,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 22:32:18,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-06 22:32:18,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:32:18,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-06 22:32:18,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-06 22:32:18,341 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:32:18,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:32:18,353 INFO L93 Difference]: Finished difference Result 41 states and 58 transitions. [2024-11-06 22:32:18,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-06 22:32:18,355 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-06 22:32:18,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:32:18,362 INFO L225 Difference]: With dead ends: 41 [2024-11-06 22:32:18,362 INFO L226 Difference]: Without dead ends: 19 [2024-11-06 22:32:18,365 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 [2024-11-06 22:32:18,368 INFO L432 NwaCegarLoop]: 28 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, 28 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 22:32:18,369 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 22:32:18,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-11-06 22:32:18,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-11-06 22:32:18,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:32:18,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2024-11-06 22:32:18,394 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 10 [2024-11-06 22:32:18,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:32:18,395 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2024-11-06 22:32:18,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:32:18,395 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2024-11-06 22:32:18,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-06 22:32:18,395 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:32:18,396 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:32:18,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-06 22:32:18,396 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:32:18,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:32:18,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1773339129, now seen corresponding path program 1 times [2024-11-06 22:32:18,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:32:18,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553363406] [2024-11-06 22:32:18,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:32:18,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:32:18,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:32:18,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:32:18,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:32:18,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553363406] [2024-11-06 22:32:18,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553363406] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 22:32:18,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 22:32:18,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-06 22:32:18,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509047848] [2024-11-06 22:32:18,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 22:32:18,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 22:32:18,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:32:18,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 22:32:18,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-06 22:32:18,659 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:32:18,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:32:18,696 INFO L93 Difference]: Finished difference Result 33 states and 40 transitions. [2024-11-06 22:32:18,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 22:32:18,697 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-06 22:32:18,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:32:18,697 INFO L225 Difference]: With dead ends: 33 [2024-11-06 22:32:18,698 INFO L226 Difference]: Without dead ends: 25 [2024-11-06 22:32:18,698 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-06 22:32:18,700 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 7 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 22:32:18,700 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 49 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 22:32:18,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-06 22:32:18,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 20. [2024-11-06 22:32:18,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:32:18,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2024-11-06 22:32:18,705 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 10 [2024-11-06 22:32:18,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:32:18,705 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2024-11-06 22:32:18,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:32:18,706 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2024-11-06 22:32:18,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-06 22:32:18,706 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:32:18,706 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:32:18,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-06 22:32:18,706 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:32:18,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:32:18,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1732647764, now seen corresponding path program 1 times [2024-11-06 22:32:18,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:32:18,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242558083] [2024-11-06 22:32:18,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:32:18,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:32:18,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:32:18,941 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:32:18,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:32:18,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242558083] [2024-11-06 22:32:18,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242558083] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 22:32:18,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 22:32:18,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-06 22:32:18,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738552754] [2024-11-06 22:32:18,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 22:32:18,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 22:32:18,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:32:18,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 22:32:18,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-06 22:32:18,943 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:32:18,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:32:18,977 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2024-11-06 22:32:18,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 22:32:18,979 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-06 22:32:18,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:32:18,979 INFO L225 Difference]: With dead ends: 37 [2024-11-06 22:32:18,979 INFO L226 Difference]: Without dead ends: 22 [2024-11-06 22:32:18,980 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-06 22:32:18,980 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 1 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 22:32:18,980 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 49 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 22:32:18,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-06 22:32:18,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2024-11-06 22:32:18,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:32:18,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2024-11-06 22:32:18,986 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 16 [2024-11-06 22:32:18,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:32:18,986 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2024-11-06 22:32:18,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:32:18,986 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2024-11-06 22:32:18,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-06 22:32:18,987 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:32:18,987 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:32:18,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-06 22:32:18,987 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:32:18,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:32:18,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1155103498, now seen corresponding path program 1 times [2024-11-06 22:32:18,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:32:18,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214600234] [2024-11-06 22:32:18,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:32:18,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:32:19,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:32:19,213 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:32:19,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:32:19,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214600234] [2024-11-06 22:32:19,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214600234] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:32:19,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720846195] [2024-11-06 22:32:19,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:32:19,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:32:19,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:32:19,218 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:32:19,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-06 22:32:19,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:32:19,296 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-06 22:32:19,302 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:32:19,346 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:32:19,346 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:32:19,435 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:32:19,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720846195] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:32:19,435 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:32:19,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-06 22:32:19,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17883155] [2024-11-06 22:32:19,436 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:32:19,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-06 22:32:19,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:32:19,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-06 22:32:19,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-06 22:32:19,437 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:32:19,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:32:19,504 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2024-11-06 22:32:19,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-06 22:32:19,505 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-06 22:32:19,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:32:19,505 INFO L225 Difference]: With dead ends: 44 [2024-11-06 22:32:19,505 INFO L226 Difference]: Without dead ends: 29 [2024-11-06 22:32:19,506 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-06 22:32:19,508 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 24 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:32:19,508 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 87 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:32:19,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-06 22:32:19,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 23. [2024-11-06 22:32:19,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:32:19,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2024-11-06 22:32:19,514 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 18 [2024-11-06 22:32:19,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:32:19,514 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2024-11-06 22:32:19,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:32:19,515 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2024-11-06 22:32:19,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-06 22:32:19,516 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:32:19,516 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:32:19,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-06 22:32:19,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:32:19,717 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:32:19,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:32:19,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1735193064, now seen corresponding path program 2 times [2024-11-06 22:32:19,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:32:19,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218404609] [2024-11-06 22:32:19,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:32:19,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:32:19,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:32:20,545 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:32:20,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:32:20,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218404609] [2024-11-06 22:32:20,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218404609] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:32:20,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203518638] [2024-11-06 22:32:20,545 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 22:32:20,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:32:20,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:32:20,548 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:32:20,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-06 22:32:20,609 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 22:32:20,609 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:32:20,610 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-06 22:32:20,613 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:32:20,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-06 22:32:20,886 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-06 22:32:20,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2024-11-06 22:32:20,905 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 22:32:20,905 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:32:21,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 43 treesize of output 37 [2024-11-06 22:32:21,060 INFO L349 Elim1Store]: treesize reduction 5, result has 70.6 percent of original size [2024-11-06 22:32:21,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 73 treesize of output 66 [2024-11-06 22:32:21,152 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 22:32:21,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203518638] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:32:21,152 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:32:21,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 10] total 26 [2024-11-06 22:32:21,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031129181] [2024-11-06 22:32:21,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:32:21,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-06 22:32:21,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:32:21,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-06 22:32:21,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=522, Unknown=0, NotChecked=0, Total=650 [2024-11-06 22:32:21,154 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 26 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 26 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:32:21,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:32:21,754 INFO L93 Difference]: Finished difference Result 65 states and 83 transitions. [2024-11-06 22:32:21,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-06 22:32:21,755 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 26 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-06 22:32:21,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:32:21,756 INFO L225 Difference]: With dead ends: 65 [2024-11-06 22:32:21,757 INFO L226 Difference]: Without dead ends: 63 [2024-11-06 22:32:21,757 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=306, Invalid=1176, Unknown=0, NotChecked=0, Total=1482 [2024-11-06 22:32:21,758 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 72 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-06 22:32:21,760 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 136 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-06 22:32:21,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-06 22:32:21,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 36. [2024-11-06 22:32:21,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 35 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:32:21,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 46 transitions. [2024-11-06 22:32:21,770 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 46 transitions. Word has length 20 [2024-11-06 22:32:21,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:32:21,770 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 46 transitions. [2024-11-06 22:32:21,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 26 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:32:21,770 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 46 transitions. [2024-11-06 22:32:21,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-06 22:32:21,771 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:32:21,771 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:32:21,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-06 22:32:21,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:32:21,971 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:32:21,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:32:21,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1879715862, now seen corresponding path program 1 times [2024-11-06 22:32:21,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:32:21,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735405889] [2024-11-06 22:32:21,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:32:21,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:32:21,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:32:22,044 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 22:32:22,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:32:22,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735405889] [2024-11-06 22:32:22,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735405889] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 22:32:22,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 22:32:22,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-06 22:32:22,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735399695] [2024-11-06 22:32:22,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 22:32:22,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 22:32:22,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:32:22,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 22:32:22,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-06 22:32:22,046 INFO L87 Difference]: Start difference. First operand 36 states and 46 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:32:22,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:32:22,085 INFO L93 Difference]: Finished difference Result 74 states and 98 transitions. [2024-11-06 22:32:22,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 22:32:22,088 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-06 22:32:22,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:32:22,089 INFO L225 Difference]: With dead ends: 74 [2024-11-06 22:32:22,089 INFO L226 Difference]: Without dead ends: 48 [2024-11-06 22:32:22,089 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-06 22:32:22,089 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 11 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 22:32:22,090 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 55 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 22:32:22,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-06 22:32:22,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 38. [2024-11-06 22:32:22,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 37 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:32:22,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 48 transitions. [2024-11-06 22:32:22,096 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 48 transitions. Word has length 20 [2024-11-06 22:32:22,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:32:22,097 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 48 transitions. [2024-11-06 22:32:22,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:32:22,097 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 48 transitions. [2024-11-06 22:32:22,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-06 22:32:22,099 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:32:22,099 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:32:22,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-06 22:32:22,099 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:32:22,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:32:22,099 INFO L85 PathProgramCache]: Analyzing trace with hash -816173062, now seen corresponding path program 1 times [2024-11-06 22:32:22,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:32:22,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115497257] [2024-11-06 22:32:22,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:32:22,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:32:22,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:32:22,767 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:32:22,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:32:22,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115497257] [2024-11-06 22:32:22,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115497257] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:32:22,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834694227] [2024-11-06 22:32:22,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:32:22,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:32:22,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:32:22,770 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:32:22,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-06 22:32:22,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:32:22,829 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-06 22:32:22,832 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:32:22,924 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 42 treesize of output 22 [2024-11-06 22:32:23,048 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-06 22:32:23,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 22 [2024-11-06 22:32:23,135 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-06 22:32:23,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 12 [2024-11-06 22:32:23,159 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 22:32:23,159 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:32:23,451 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 64 treesize of output 56 [2024-11-06 22:32:23,462 INFO L349 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2024-11-06 22:32:23,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 334 treesize of output 282 [2024-11-06 22:32:27,553 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 22:32:27,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834694227] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:32:27,553 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:32:27,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 10] total 31 [2024-11-06 22:32:27,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971303907] [2024-11-06 22:32:27,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:32:27,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-06 22:32:27,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:32:27,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-06 22:32:27,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=806, Unknown=1, NotChecked=0, Total=930 [2024-11-06 22:32:27,555 INFO L87 Difference]: Start difference. First operand 38 states and 48 transitions. Second operand has 31 states, 31 states have (on average 1.7419354838709677) internal successors, (54), 31 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:32:28,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:32:28,936 INFO L93 Difference]: Finished difference Result 101 states and 134 transitions. [2024-11-06 22:32:28,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-06 22:32:28,937 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.7419354838709677) internal successors, (54), 31 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-06 22:32:28,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:32:28,937 INFO L225 Difference]: With dead ends: 101 [2024-11-06 22:32:28,938 INFO L226 Difference]: Without dead ends: 75 [2024-11-06 22:32:28,939 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 733 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=425, Invalid=2436, Unknown=1, NotChecked=0, Total=2862 [2024-11-06 22:32:28,940 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 105 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-06 22:32:28,940 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 153 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-06 22:32:28,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-06 22:32:28,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 31. [2024-11-06 22:32:28,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2) internal successors, (36), 30 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:32:28,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2024-11-06 22:32:28,949 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 23 [2024-11-06 22:32:28,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:32:28,949 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2024-11-06 22:32:28,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.7419354838709677) internal successors, (54), 31 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:32:28,950 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2024-11-06 22:32:28,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-06 22:32:28,950 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:32:28,950 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:32:28,967 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-06 22:32:29,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:32:29,151 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:32:29,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:32:29,151 INFO L85 PathProgramCache]: Analyzing trace with hash 726796030, now seen corresponding path program 1 times [2024-11-06 22:32:29,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:32:29,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424542363] [2024-11-06 22:32:29,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:32:29,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:32:29,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:32:29,303 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-06 22:32:29,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:32:29,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424542363] [2024-11-06 22:32:29,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424542363] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:32:29,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787083642] [2024-11-06 22:32:29,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:32:29,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:32:29,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:32:29,309 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:32:29,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-06 22:32:29,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:32:29,370 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-06 22:32:29,371 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:32:29,471 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-06 22:32:29,472 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:32:29,659 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-06 22:32:29,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787083642] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:32:29,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:32:29,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2024-11-06 22:32:29,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740549406] [2024-11-06 22:32:29,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:32:29,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-06 22:32:29,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:32:29,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-06 22:32:29,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-06 22:32:29,660 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:32:29,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:32:29,800 INFO L93 Difference]: Finished difference Result 74 states and 88 transitions. [2024-11-06 22:32:29,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-06 22:32:29,800 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-06 22:32:29,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:32:29,801 INFO L225 Difference]: With dead ends: 74 [2024-11-06 22:32:29,801 INFO L226 Difference]: Without dead ends: 42 [2024-11-06 22:32:29,801 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2024-11-06 22:32:29,802 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 60 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:32:29,802 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 143 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:32:29,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-06 22:32:29,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2024-11-06 22:32:29,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 35 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:32:29,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2024-11-06 22:32:29,806 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 24 [2024-11-06 22:32:29,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:32:29,806 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2024-11-06 22:32:29,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:32:29,806 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2024-11-06 22:32:29,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-06 22:32:29,807 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:32:29,807 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:32:29,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-06 22:32:30,011 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,SelfDestructingSolverStorable7 [2024-11-06 22:32:30,012 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:32:30,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:32:30,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1154473265, now seen corresponding path program 2 times [2024-11-06 22:32:30,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:32:30,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834209439] [2024-11-06 22:32:30,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:32:30,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:32:30,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:32:30,604 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:32:30,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:32:30,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834209439] [2024-11-06 22:32:30,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834209439] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:32:30,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081192952] [2024-11-06 22:32:30,605 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 22:32:30,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:32:30,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:32:30,608 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:32:30,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-06 22:32:30,674 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 22:32:30,675 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:32:30,676 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-06 22:32:30,678 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:32:30,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-06 22:32:31,002 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-06 22:32:31,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2024-11-06 22:32:31,024 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-06 22:32:31,024 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:32:31,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 45 treesize of output 39 [2024-11-06 22:32:31,174 INFO L349 Elim1Store]: treesize reduction 5, result has 70.6 percent of original size [2024-11-06 22:32:31,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 58 [2024-11-06 22:32:31,199 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-06 22:32:31,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081192952] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:32:31,199 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:32:31,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 11] total 26 [2024-11-06 22:32:31,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756792577] [2024-11-06 22:32:31,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:32:31,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-06 22:32:31,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:32:31,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-06 22:32:31,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=559, Unknown=0, NotChecked=0, Total=650 [2024-11-06 22:32:31,202 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand has 26 states, 26 states have (on average 2.769230769230769) internal successors, (72), 26 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:32:31,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:32:31,748 INFO L93 Difference]: Finished difference Result 77 states and 93 transitions. [2024-11-06 22:32:31,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-06 22:32:31,749 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.769230769230769) internal successors, (72), 26 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2024-11-06 22:32:31,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:32:31,749 INFO L225 Difference]: With dead ends: 77 [2024-11-06 22:32:31,749 INFO L226 Difference]: Without dead ends: 75 [2024-11-06 22:32:31,750 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=168, Invalid=954, Unknown=0, NotChecked=0, Total=1122 [2024-11-06 22:32:31,750 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 99 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-06 22:32:31,751 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 269 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-06 22:32:31,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-06 22:32:31,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 52. [2024-11-06 22:32:31,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.2352941176470589) internal successors, (63), 51 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:32:31,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 63 transitions. [2024-11-06 22:32:31,759 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 63 transitions. Word has length 32 [2024-11-06 22:32:31,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:32:31,760 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 63 transitions. [2024-11-06 22:32:31,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.769230769230769) internal successors, (72), 26 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:32:31,760 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 63 transitions. [2024-11-06 22:32:31,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-06 22:32:31,762 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:32:31,762 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:32:31,775 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-06 22:32:31,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:32:31,967 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:32:31,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:32:31,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1785652637, now seen corresponding path program 1 times [2024-11-06 22:32:31,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:32:31,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697556762] [2024-11-06 22:32:31,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:32:31,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:32:31,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:32:32,506 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:32:32,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:32:32,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697556762] [2024-11-06 22:32:32,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697556762] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:32:32,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881037613] [2024-11-06 22:32:32,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:32:32,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:32:32,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:32:32,509 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:32:32,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-06 22:32:32,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:32:32,585 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-06 22:32:32,588 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:32:32,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 20 [2024-11-06 22:32:32,898 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-06 22:32:32,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 20 [2024-11-06 22:32:33,043 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-06 22:32:33,044 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 12 [2024-11-06 22:32:33,066 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-06 22:32:33,067 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:32:33,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 74 treesize of output 66 [2024-11-06 22:32:33,415 INFO L349 Elim1Store]: treesize reduction 9, result has 47.1 percent of original size [2024-11-06 22:32:33,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 494 treesize of output 426 [2024-11-06 22:32:33,689 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-06 22:32:33,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881037613] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:32:33,690 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:32:33,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 13] total 35 [2024-11-06 22:32:33,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418943626] [2024-11-06 22:32:33,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:32:33,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-06 22:32:33,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:32:33,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-06 22:32:33,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1041, Unknown=0, NotChecked=0, Total=1190 [2024-11-06 22:32:33,693 INFO L87 Difference]: Start difference. First operand 52 states and 63 transitions. Second operand has 35 states, 35 states have (on average 2.657142857142857) internal successors, (93), 35 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:32:35,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:32:35,275 INFO L93 Difference]: Finished difference Result 147 states and 185 transitions. [2024-11-06 22:32:35,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-06 22:32:35,275 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.657142857142857) internal successors, (93), 35 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-06 22:32:35,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:32:35,276 INFO L225 Difference]: With dead ends: 147 [2024-11-06 22:32:35,276 INFO L226 Difference]: Without dead ends: 119 [2024-11-06 22:32:35,281 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1251 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=589, Invalid=3967, Unknown=0, NotChecked=0, Total=4556 [2024-11-06 22:32:35,281 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 167 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-06 22:32:35,282 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 282 Invalid, 806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-06 22:32:35,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-11-06 22:32:35,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 61. [2024-11-06 22:32:35,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.2833333333333334) internal successors, (77), 60 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:32:35,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 77 transitions. [2024-11-06 22:32:35,290 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 77 transitions. Word has length 35 [2024-11-06 22:32:35,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:32:35,290 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 77 transitions. [2024-11-06 22:32:35,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.657142857142857) internal successors, (93), 35 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:32:35,291 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 77 transitions. [2024-11-06 22:32:35,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-06 22:32:35,291 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:32:35,291 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:32:35,305 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-06 22:32:35,495 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,SelfDestructingSolverStorable9 [2024-11-06 22:32:35,496 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:32:35,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:32:35,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1766560667, now seen corresponding path program 3 times [2024-11-06 22:32:35,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:32:35,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458344069] [2024-11-06 22:32:35,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:32:35,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:32:35,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:32:35,808 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-06 22:32:35,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:32:35,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458344069] [2024-11-06 22:32:35,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458344069] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:32:35,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501804344] [2024-11-06 22:32:35,808 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-06 22:32:35,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:32:35,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:32:35,811 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:32:35,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-06 22:32:35,905 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-06 22:32:35,905 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:32:35,906 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-06 22:32:35,907 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:32:36,116 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-06 22:32:36,116 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:32:36,283 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-06 22:32:36,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501804344] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:32:36,283 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:32:36,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 20 [2024-11-06 22:32:36,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088581815] [2024-11-06 22:32:36,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:32:36,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-06 22:32:36,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:32:36,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-06 22:32:36,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2024-11-06 22:32:36,285 INFO L87 Difference]: Start difference. First operand 61 states and 77 transitions. Second operand has 20 states, 20 states have (on average 3.85) internal successors, (77), 20 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:32:36,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:32:36,549 INFO L93 Difference]: Finished difference Result 160 states and 203 transitions. [2024-11-06 22:32:36,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-06 22:32:36,549 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.85) internal successors, (77), 20 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-11-06 22:32:36,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:32:36,550 INFO L225 Difference]: With dead ends: 160 [2024-11-06 22:32:36,550 INFO L226 Difference]: Without dead ends: 116 [2024-11-06 22:32:36,551 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 61 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2024-11-06 22:32:36,551 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 49 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 22:32:36,551 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 297 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 22:32:36,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-06 22:32:36,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 99. [2024-11-06 22:32:36,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.2244897959183674) internal successors, (120), 98 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:32:36,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 120 transitions. [2024-11-06 22:32:36,564 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 120 transitions. Word has length 36 [2024-11-06 22:32:36,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:32:36,565 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 120 transitions. [2024-11-06 22:32:36,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.85) internal successors, (77), 20 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:32:36,565 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 120 transitions. [2024-11-06 22:32:36,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-06 22:32:36,566 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:32:36,566 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:32:36,582 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-06 22:32:36,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:32:36,770 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:32:36,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:32:36,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1073441519, now seen corresponding path program 1 times [2024-11-06 22:32:36,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:32:36,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480148830] [2024-11-06 22:32:36,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:32:36,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:32:36,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:32:37,992 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:32:37,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:32:37,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480148830] [2024-11-06 22:32:37,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480148830] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:32:37,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949597147] [2024-11-06 22:32:37,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:32:37,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:32:37,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:32:37,994 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:32:37,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-06 22:32:38,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:32:38,072 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-06 22:32:38,077 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:32:38,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-06 22:32:38,265 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-06 22:32:38,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 25 [2024-11-06 22:32:38,378 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-06 22:32:38,378 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 28 [2024-11-06 22:32:38,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 22:32:38,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 22:32:38,518 INFO L349 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2024-11-06 22:32:38,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 46 treesize of output 34 [2024-11-06 22:32:38,587 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-06 22:32:38,587 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2024-11-06 22:32:38,608 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-06 22:32:38,608 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:32:39,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 114 treesize of output 104 [2024-11-06 22:32:39,363 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-06 22:32:39,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 6946 treesize of output 6481 [2024-11-06 22:32:44,633 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 24 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-06 22:32:44,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949597147] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:32:44,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:32:44,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 21, 19] total 48 [2024-11-06 22:32:44,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671571417] [2024-11-06 22:32:44,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:32:44,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-06 22:32:44,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:32:44,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-06 22:32:44,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=1982, Unknown=1, NotChecked=0, Total=2256 [2024-11-06 22:32:44,635 INFO L87 Difference]: Start difference. First operand 99 states and 120 transitions. Second operand has 48 states, 48 states have (on average 1.7708333333333333) internal successors, (85), 48 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:32:54,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-06 22:32:58,088 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-06 22:33:02,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-06 22:33:06,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-06 22:33:10,180 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (* |c_ULTIMATE.start_main_~i~0#1| 4)) (.cse2 (select |c_#memory_int#1| |c_ULTIMATE.start_main_~#v~0#1.base|)) (.cse0 (= |c_ULTIMATE.start_main_~#v~0#1.offset| 0))) (and (or (not |c_ULTIMATE.start_main_#t~short9#1|) (and (= |c_ULTIMATE.start_main_~i~0#1| 0) (= |c_ULTIMATE.start_main_~j~0#1| 1) .cse0)) (= |c_ULTIMATE.start_main_~j~0#1| 2) (let ((.cse1 (store .cse2 (+ .cse3 4) |c_ULTIMATE.start_main_~key~0#1|))) (<= (select .cse1 4) (select .cse1 8))) (forall ((|ULTIMATE.start_main_~key~0#1| Int)) (let ((.cse4 (store .cse2 (+ .cse3 |c_ULTIMATE.start_main_~#v~0#1.offset| 4) |ULTIMATE.start_main_~key~0#1|))) (< (select .cse4 (+ |c_ULTIMATE.start_main_~#v~0#1.offset| 4)) (+ (select .cse4 (+ |c_ULTIMATE.start_main_~#v~0#1.offset| 8)) 1)))) (<= (select .cse2 4) (select .cse2 8)) .cse0)) is different from false [2024-11-06 22:33:14,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-06 22:33:18,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-06 22:33:22,293 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]