./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-cav19/array_tiling_tcpy.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/array-cav19/array_tiling_tcpy.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', '5446997f7b2d7b76d63a39784df785fb06bbab562e365ba547eeee8a855e283e'] 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/array-cav19/array_tiling_tcpy.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 5446997f7b2d7b76d63a39784df785fb06bbab562e365ba547eeee8a855e283e --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-06 18:38:19,171 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 18:38:19,250 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-06 18:38:19,254 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 18:38:19,255 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 18:38:19,283 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 18:38:19,285 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 18:38:19,285 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 18:38:19,286 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 18:38:19,286 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 18:38:19,287 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 18:38:19,287 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 18:38:19,287 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 18:38:19,287 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 18:38:19,288 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 18:38:19,288 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 18:38:19,288 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 18:38:19,288 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-06 18:38:19,288 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-06 18:38:19,288 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-06 18:38:19,288 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 18:38:19,289 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 18:38:19,289 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 18:38:19,289 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 18:38:19,289 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 18:38:19,289 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-06 18:38:19,289 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 18:38:19,289 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 18:38:19,290 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 18:38:19,290 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 18:38:19,291 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 18:38:19,291 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 18:38:19,291 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 18:38:19,291 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 18:38:19,291 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 18:38:19,291 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 18:38:19,292 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-06 18:38:19,292 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-06 18:38:19,292 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 18:38:19,292 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 18:38:19,292 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 18:38:19,292 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 18:38:19,292 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 -> 5446997f7b2d7b76d63a39784df785fb06bbab562e365ba547eeee8a855e283e [2024-11-06 18:38:19,564 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 18:38:19,574 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 18:38:19,576 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 18:38:19,577 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 18:38:19,578 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 18:38:19,580 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-cav19/array_tiling_tcpy.c [2024-11-06 18:38:20,835 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 18:38:21,083 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 18:38:21,084 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-cav19/array_tiling_tcpy.c [2024-11-06 18:38:21,095 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f04a07578/49ec0e39d0414eddba4bde5efe956084/FLAG9ec5a8a0a [2024-11-06 18:38:21,402 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f04a07578/49ec0e39d0414eddba4bde5efe956084 [2024-11-06 18:38:21,403 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 18:38:21,405 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-06 18:38:21,406 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 18:38:21,406 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 18:38:21,410 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 18:38:21,411 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:38:21" (1/1) ... [2024-11-06 18:38:21,411 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b13b48a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:38:21, skipping insertion in model container [2024-11-06 18:38:21,412 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:38:21" (1/1) ... [2024-11-06 18:38:21,423 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 18:38:21,537 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/array-cav19/array_tiling_tcpy.c[408,421] [2024-11-06 18:38:21,559 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 18:38:21,567 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 18:38:21,575 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/array-cav19/array_tiling_tcpy.c[408,421] [2024-11-06 18:38:21,581 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 18:38:21,593 INFO L204 MainTranslator]: Completed translation [2024-11-06 18:38:21,593 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:38:21 WrapperNode [2024-11-06 18:38:21,594 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 18:38:21,594 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 18:38:21,595 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 18:38:21,595 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 18:38:21,601 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:38:21" (1/1) ... [2024-11-06 18:38:21,607 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:38:21" (1/1) ... [2024-11-06 18:38:21,625 INFO L138 Inliner]: procedures = 15, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 58 [2024-11-06 18:38:21,626 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 18:38:21,626 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 18:38:21,627 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 18:38:21,627 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 18:38:21,634 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:38:21" (1/1) ... [2024-11-06 18:38:21,634 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:38:21" (1/1) ... [2024-11-06 18:38:21,640 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:38:21" (1/1) ... [2024-11-06 18:38:21,659 INFO L175 MemorySlicer]: Split 8 memory accesses to 3 slices as follows [2, 3, 3]. 38 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 2, 0]. [2024-11-06 18:38:21,661 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:38:21" (1/1) ... [2024-11-06 18:38:21,661 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:38:21" (1/1) ... [2024-11-06 18:38:21,666 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:38:21" (1/1) ... [2024-11-06 18:38:21,671 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:38:21" (1/1) ... [2024-11-06 18:38:21,677 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:38:21" (1/1) ... [2024-11-06 18:38:21,677 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:38:21" (1/1) ... [2024-11-06 18:38:21,679 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 18:38:21,680 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 18:38:21,683 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 18:38:21,683 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 18:38:21,684 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:38:21" (1/1) ... [2024-11-06 18:38:21,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 18:38:21,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:38:21,717 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 18:38:21,720 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 18:38:21,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 18:38:21,743 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-06 18:38:21,743 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-06 18:38:21,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-06 18:38:21,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-06 18:38:21,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-06 18:38:21,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-06 18:38:21,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-06 18:38:21,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-06 18:38:21,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-06 18:38:21,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 18:38:21,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 18:38:21,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-06 18:38:21,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-06 18:38:21,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-06 18:38:21,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-06 18:38:21,819 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 18:38:21,820 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 18:38:21,926 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-06 18:38:21,926 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 18:38:21,935 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 18:38:21,935 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-06 18:38:21,935 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:38:21 BoogieIcfgContainer [2024-11-06 18:38:21,935 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 18:38:21,937 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 18:38:21,937 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 18:38:21,941 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 18:38:21,942 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 06:38:21" (1/3) ... [2024-11-06 18:38:21,942 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33e72088 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:38:21, skipping insertion in model container [2024-11-06 18:38:21,943 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:38:21" (2/3) ... [2024-11-06 18:38:21,943 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33e72088 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:38:21, skipping insertion in model container [2024-11-06 18:38:21,944 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:38:21" (3/3) ... [2024-11-06 18:38:21,945 INFO L112 eAbstractionObserver]: Analyzing ICFG array_tiling_tcpy.c [2024-11-06 18:38:21,959 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 18:38:21,959 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-06 18:38:22,013 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 18:38:22,024 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;@4a36473b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 18:38:22,025 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-06 18:38:22,030 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-06 18:38:22,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-06 18:38:22,036 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:38:22,037 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:38:22,037 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:38:22,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:38:22,043 INFO L85 PathProgramCache]: Analyzing trace with hash 932171383, now seen corresponding path program 1 times [2024-11-06 18:38:22,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:38:22,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281719280] [2024-11-06 18:38:22,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:38:22,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:38:22,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:22,175 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:38:22,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:22,186 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-06 18:38:22,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:22,197 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 18:38:22,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:38:22,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281719280] [2024-11-06 18:38:22,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281719280] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:38:22,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:38:22,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 18:38:22,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507720735] [2024-11-06 18:38:22,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:38:22,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-06 18:38:22,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:38:22,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-06 18:38:22,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-06 18:38:22,231 INFO L87 Difference]: Start difference. First operand has 22 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-06 18:38:22,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:38:22,245 INFO L93 Difference]: Finished difference Result 41 states and 54 transitions. [2024-11-06 18:38:22,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-06 18:38:22,246 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2024-11-06 18:38:22,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:38:22,251 INFO L225 Difference]: With dead ends: 41 [2024-11-06 18:38:22,252 INFO L226 Difference]: Without dead ends: 18 [2024-11-06 18:38:22,254 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 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 18:38:22,257 INFO L432 NwaCegarLoop]: 24 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, 24 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 18:38:22,260 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 18:38:22,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-11-06 18:38:22,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-11-06 18:38:22,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-06 18:38:22,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2024-11-06 18:38:22,286 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 18 [2024-11-06 18:38:22,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:38:22,286 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2024-11-06 18:38:22,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-06 18:38:22,287 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2024-11-06 18:38:22,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-06 18:38:22,288 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:38:22,288 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:38:22,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-06 18:38:22,288 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:38:22,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:38:22,289 INFO L85 PathProgramCache]: Analyzing trace with hash 601112503, now seen corresponding path program 1 times [2024-11-06 18:38:22,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:38:22,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848202453] [2024-11-06 18:38:22,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:38:22,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:38:22,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:22,473 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:38:22,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:22,482 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-06 18:38:22,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:22,489 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 18:38:22,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:38:22,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848202453] [2024-11-06 18:38:22,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848202453] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:38:22,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:38:22,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-06 18:38:22,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352294992] [2024-11-06 18:38:22,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:38:22,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 18:38:22,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:38:22,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 18:38:22,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-06 18:38:22,493 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-06 18:38:22,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:38:22,539 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2024-11-06 18:38:22,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 18:38:22,540 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2024-11-06 18:38:22,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:38:22,542 INFO L225 Difference]: With dead ends: 34 [2024-11-06 18:38:22,542 INFO L226 Difference]: Without dead ends: 26 [2024-11-06 18:38:22,543 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-06 18:38:22,544 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 6 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:38:22,544 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 40 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 18:38:22,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-06 18:38:22,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 19. [2024-11-06 18:38:22,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-06 18:38:22,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2024-11-06 18:38:22,550 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 18 [2024-11-06 18:38:22,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:38:22,551 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2024-11-06 18:38:22,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-06 18:38:22,551 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2024-11-06 18:38:22,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-06 18:38:22,552 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:38:22,552 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:38:22,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-06 18:38:22,552 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:38:22,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:38:22,553 INFO L85 PathProgramCache]: Analyzing trace with hash -506086443, now seen corresponding path program 1 times [2024-11-06 18:38:22,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:38:22,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64554107] [2024-11-06 18:38:22,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:38:22,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:38:22,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:23,059 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:38:23,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:23,066 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-06 18:38:23,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:23,072 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 18:38:23,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:38:23,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64554107] [2024-11-06 18:38:23,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64554107] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:38:23,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564375321] [2024-11-06 18:38:23,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:38:23,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:38:23,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:38:23,077 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 18:38:23,079 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 18:38:23,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:23,156 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-06 18:38:23,162 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:38:23,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 31 [2024-11-06 18:38:23,418 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 18:38:23,418 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:38:23,515 INFO L349 Elim1Store]: treesize reduction 10, result has 52.4 percent of original size [2024-11-06 18:38:23,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 49 treesize of output 36 [2024-11-06 18:38:23,548 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 18:38:23,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564375321] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:38:23,551 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:38:23,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-06 18:38:23,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124995063] [2024-11-06 18:38:23,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:38:23,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-06 18:38:23,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:38:23,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-06 18:38:23,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-11-06 18:38:23,552 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-06 18:38:23,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:38:23,666 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2024-11-06 18:38:23,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-06 18:38:23,667 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2024-11-06 18:38:23,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:38:23,667 INFO L225 Difference]: With dead ends: 26 [2024-11-06 18:38:23,667 INFO L226 Difference]: Without dead ends: 24 [2024-11-06 18:38:23,668 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2024-11-06 18:38:23,669 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 20 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:38:23,669 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 97 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:38:23,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-06 18:38:23,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2024-11-06 18:38:23,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-06 18:38:23,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2024-11-06 18:38:23,673 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 20 [2024-11-06 18:38:23,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:38:23,674 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2024-11-06 18:38:23,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-06 18:38:23,674 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2024-11-06 18:38:23,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-06 18:38:23,676 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:38:23,676 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:38:23,693 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 18:38:23,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:38:23,877 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:38:23,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:38:23,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1327390603, now seen corresponding path program 1 times [2024-11-06 18:38:23,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:38:23,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646246810] [2024-11-06 18:38:23,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:38:23,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:38:23,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:23,987 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:38:23,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:24,012 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-06 18:38:24,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:24,017 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-06 18:38:24,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:38:24,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646246810] [2024-11-06 18:38:24,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646246810] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:38:24,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668267040] [2024-11-06 18:38:24,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:38:24,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:38:24,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:38:24,023 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 18:38:24,024 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 18:38:24,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:24,093 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-06 18:38:24,095 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:38:24,162 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-06 18:38:24,162 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:38:24,238 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-06 18:38:24,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668267040] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:38:24,238 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:38:24,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-06 18:38:24,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328012228] [2024-11-06 18:38:24,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:38:24,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-06 18:38:24,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:38:24,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-06 18:38:24,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-06 18:38:24,239 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-06 18:38:24,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:38:24,343 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2024-11-06 18:38:24,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-06 18:38:24,344 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2024-11-06 18:38:24,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:38:24,344 INFO L225 Difference]: With dead ends: 41 [2024-11-06 18:38:24,344 INFO L226 Difference]: Without dead ends: 32 [2024-11-06 18:38:24,345 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-11-06 18:38:24,345 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 20 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:38:24,345 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 76 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:38:24,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-06 18:38:24,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 23. [2024-11-06 18:38:24,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-06 18:38:24,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2024-11-06 18:38:24,354 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 24 [2024-11-06 18:38:24,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:38:24,354 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2024-11-06 18:38:24,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-06 18:38:24,355 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2024-11-06 18:38:24,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-06 18:38:24,357 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:38:24,357 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:38:24,373 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-06 18:38:24,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:38:24,558 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:38:24,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:38:24,558 INFO L85 PathProgramCache]: Analyzing trace with hash -2146579159, now seen corresponding path program 2 times [2024-11-06 18:38:24,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:38:24,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179214739] [2024-11-06 18:38:24,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:38:24,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:38:24,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:24,978 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:38:24,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:24,982 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-06 18:38:24,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:24,985 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 18:38:24,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:38:24,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179214739] [2024-11-06 18:38:24,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179214739] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:38:24,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147455405] [2024-11-06 18:38:24,985 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 18:38:24,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:38:24,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:38:24,989 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 18:38:24,991 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 18:38:25,054 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 18:38:25,055 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:38:25,057 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-06 18:38:25,059 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:38:25,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 31 [2024-11-06 18:38:25,548 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-06 18:38:25,548 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:38:25,658 INFO L349 Elim1Store]: treesize reduction 10, result has 52.4 percent of original size [2024-11-06 18:38:25,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 53 treesize of output 38 [2024-11-06 18:38:25,760 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 18:38:25,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147455405] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:38:25,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:38:25,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 8] total 23 [2024-11-06 18:38:25,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461835973] [2024-11-06 18:38:25,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:38:25,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-06 18:38:25,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:38:25,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-06 18:38:25,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2024-11-06 18:38:25,762 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 23 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 22 states have internal predecessors, (47), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:38:26,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:38:26,083 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2024-11-06 18:38:26,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-06 18:38:26,083 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 22 states have internal predecessors, (47), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 26 [2024-11-06 18:38:26,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:38:26,084 INFO L225 Difference]: With dead ends: 32 [2024-11-06 18:38:26,085 INFO L226 Difference]: Without dead ends: 30 [2024-11-06 18:38:26,086 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=151, Invalid=661, Unknown=0, NotChecked=0, Total=812 [2024-11-06 18:38:26,086 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 49 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:38:26,088 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 114 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:38:26,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-06 18:38:26,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2024-11-06 18:38:26,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 23 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-06 18:38:26,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2024-11-06 18:38:26,099 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 26 [2024-11-06 18:38:26,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:38:26,099 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2024-11-06 18:38:26,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 22 states have internal predecessors, (47), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:38:26,100 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2024-11-06 18:38:26,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-06 18:38:26,101 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:38:26,101 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:38:26,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-06 18:38:26,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:38:26,303 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:38:26,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:38:26,303 INFO L85 PathProgramCache]: Analyzing trace with hash 92645087, now seen corresponding path program 3 times [2024-11-06 18:38:26,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:38:26,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951257007] [2024-11-06 18:38:26,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:38:26,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:38:26,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:26,869 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:38:26,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:26,872 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-06 18:38:26,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:26,874 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 18:38:26,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:38:26,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951257007] [2024-11-06 18:38:26,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951257007] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:38:26,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900587511] [2024-11-06 18:38:26,874 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-06 18:38:26,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:38:26,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:38:26,877 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 18:38:26,878 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 18:38:26,954 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-06 18:38:26,954 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:38:26,960 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-06 18:38:26,963 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:38:27,024 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2024-11-06 18:38:27,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:38:27,526 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-06 18:38:27,530 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-06 18:38:27,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 73 treesize of output 51 [2024-11-06 18:38:27,536 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-06 18:38:27,538 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-06 18:38:27,539 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 46 treesize of output 20 [2024-11-06 18:38:27,560 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 18:38:27,561 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:38:27,871 INFO L349 Elim1Store]: treesize reduction 10, result has 52.4 percent of original size [2024-11-06 18:38:27,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 53 treesize of output 38 [2024-11-06 18:38:27,942 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 18:38:27,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900587511] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:38:27,943 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:38:27,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2024-11-06 18:38:27,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488543559] [2024-11-06 18:38:27,943 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:38:27,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-06 18:38:27,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:38:27,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-06 18:38:27,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=616, Unknown=0, NotChecked=0, Total=756 [2024-11-06 18:38:27,947 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand has 28 states, 28 states have (on average 2.0) internal successors, (56), 28 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-06 18:38:29,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:38:29,330 INFO L93 Difference]: Finished difference Result 87 states and 94 transitions. [2024-11-06 18:38:29,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-06 18:38:29,330 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.0) internal successors, (56), 28 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30 [2024-11-06 18:38:29,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:38:29,331 INFO L225 Difference]: With dead ends: 87 [2024-11-06 18:38:29,331 INFO L226 Difference]: Without dead ends: 85 [2024-11-06 18:38:29,332 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 692 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=612, Invalid=2468, Unknown=0, NotChecked=0, Total=3080 [2024-11-06 18:38:29,333 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 132 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 18:38:29,333 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 221 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 18:38:29,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-06 18:38:29,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 51. [2024-11-06 18:38:29,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 47 states have (on average 1.1063829787234043) internal successors, (52), 47 states have internal predecessors, (52), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-06 18:38:29,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2024-11-06 18:38:29,344 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 30 [2024-11-06 18:38:29,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:38:29,344 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2024-11-06 18:38:29,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.0) internal successors, (56), 28 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-06 18:38:29,347 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2024-11-06 18:38:29,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-06 18:38:29,348 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:38:29,348 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:38:29,364 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-06 18:38:29,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-06 18:38:29,553 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:38:29,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:38:29,553 INFO L85 PathProgramCache]: Analyzing trace with hash -210913899, now seen corresponding path program 4 times [2024-11-06 18:38:29,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:38:29,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298745052] [2024-11-06 18:38:29,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:38:29,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:38:29,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:30,142 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:38:30,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:30,147 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-06 18:38:30,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:30,149 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 18:38:30,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:38:30,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298745052] [2024-11-06 18:38:30,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298745052] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:38:30,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196929134] [2024-11-06 18:38:30,150 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-06 18:38:30,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:38:30,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:38:30,153 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 18:38:30,155 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 18:38:30,247 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-06 18:38:30,247 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:38:30,248 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-06 18:38:30,251 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:38:30,263 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 31 [2024-11-06 18:38:30,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:38:30,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:38:30,338 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-06 18:38:30,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 67 [2024-11-06 18:38:30,849 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 18:38:30,849 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:38:31,142 INFO L349 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2024-11-06 18:38:31,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 81 treesize of output 53 [2024-11-06 18:38:31,186 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 18:38:31,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196929134] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:38:31,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:38:31,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 14] total 35 [2024-11-06 18:38:31,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406469147] [2024-11-06 18:38:31,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:38:31,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-06 18:38:31,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:38:31,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-06 18:38:31,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=971, Unknown=0, NotChecked=0, Total=1190 [2024-11-06 18:38:31,188 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand has 35 states, 35 states have (on average 1.9142857142857144) internal successors, (67), 35 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-06 18:38:32,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:38:32,110 INFO L93 Difference]: Finished difference Result 100 states and 108 transitions. [2024-11-06 18:38:32,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-06 18:38:32,111 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.9142857142857144) internal successors, (67), 35 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 34 [2024-11-06 18:38:32,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:38:32,112 INFO L225 Difference]: With dead ends: 100 [2024-11-06 18:38:32,112 INFO L226 Difference]: Without dead ends: 71 [2024-11-06 18:38:32,114 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1009 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=734, Invalid=2806, Unknown=0, NotChecked=0, Total=3540 [2024-11-06 18:38:32,114 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 103 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-06 18:38:32,115 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 275 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-06 18:38:32,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-06 18:38:32,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 55. [2024-11-06 18:38:32,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 51 states have (on average 1.1176470588235294) internal successors, (57), 51 states have internal predecessors, (57), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-06 18:38:32,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 61 transitions. [2024-11-06 18:38:32,134 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 61 transitions. Word has length 34 [2024-11-06 18:38:32,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:38:32,134 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 61 transitions. [2024-11-06 18:38:32,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.9142857142857144) internal successors, (67), 35 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-06 18:38:32,134 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 61 transitions. [2024-11-06 18:38:32,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-06 18:38:32,135 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:38:32,135 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:38:32,147 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 18:38:32,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:38:32,336 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:38:32,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:38:32,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1409886821, now seen corresponding path program 5 times [2024-11-06 18:38:32,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:38:32,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866863104] [2024-11-06 18:38:32,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:38:32,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:38:32,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:32,845 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:38:32,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:32,848 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-06 18:38:32,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:32,849 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 18:38:32,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:38:32,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866863104] [2024-11-06 18:38:32,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866863104] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:38:32,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305218876] [2024-11-06 18:38:32,850 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-06 18:38:32,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:38:32,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:38:32,852 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 18:38:32,854 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 18:38:32,945 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-06 18:38:32,945 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:38:32,947 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-06 18:38:32,950 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:38:32,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 31 [2024-11-06 18:38:33,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:38:33,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:38:33,055 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-06 18:38:33,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 67 [2024-11-06 18:38:33,431 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 18:38:33,431 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:38:33,597 INFO L349 Elim1Store]: treesize reduction 40, result has 34.4 percent of original size [2024-11-06 18:38:33,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 93 treesize of output 67 [2024-11-06 18:38:33,684 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 18:38:33,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305218876] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:38:33,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:38:33,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 29 [2024-11-06 18:38:33,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600287587] [2024-11-06 18:38:33,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:38:33,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-06 18:38:33,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:38:33,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-06 18:38:33,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=667, Unknown=0, NotChecked=0, Total=812 [2024-11-06 18:38:33,686 INFO L87 Difference]: Start difference. First operand 55 states and 61 transitions. Second operand has 29 states, 29 states have (on average 2.1724137931034484) internal successors, (63), 29 states have internal predecessors, (63), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-06 18:38:34,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:38:34,110 INFO L93 Difference]: Finished difference Result 85 states and 92 transitions. [2024-11-06 18:38:34,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-06 18:38:34,111 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.1724137931034484) internal successors, (63), 29 states have internal predecessors, (63), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 34 [2024-11-06 18:38:34,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:38:34,112 INFO L225 Difference]: With dead ends: 85 [2024-11-06 18:38:34,113 INFO L226 Difference]: Without dead ends: 83 [2024-11-06 18:38:34,114 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=255, Invalid=1151, Unknown=0, NotChecked=0, Total=1406 [2024-11-06 18:38:34,114 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 65 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 18:38:34,114 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 304 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 18:38:34,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-06 18:38:34,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 37. [2024-11-06 18:38:34,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 33 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-06 18:38:34,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2024-11-06 18:38:34,126 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 34 [2024-11-06 18:38:34,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:38:34,126 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2024-11-06 18:38:34,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.1724137931034484) internal successors, (63), 29 states have internal predecessors, (63), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-06 18:38:34,127 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2024-11-06 18:38:34,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-06 18:38:34,127 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:38:34,127 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:38:34,140 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 18:38:34,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-06 18:38:34,328 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:38:34,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:38:34,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1057244567, now seen corresponding path program 6 times [2024-11-06 18:38:34,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:38:34,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599397952] [2024-11-06 18:38:34,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:38:34,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:38:34,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:34,924 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:38:34,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:34,926 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-06 18:38:34,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:34,928 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 18:38:34,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:38:34,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599397952] [2024-11-06 18:38:34,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599397952] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:38:34,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504770913] [2024-11-06 18:38:34,928 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-06 18:38:34,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:38:34,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:38:34,930 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 18:38:34,932 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 18:38:35,008 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-06 18:38:35,009 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:38:35,010 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-06 18:38:35,012 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:38:35,032 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 31 [2024-11-06 18:38:35,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:38:35,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:38:35,117 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-06 18:38:35,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 67 [2024-11-06 18:38:35,624 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 18:38:35,625 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:38:35,905 INFO L349 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2024-11-06 18:38:35,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 81 treesize of output 53 [2024-11-06 18:38:35,967 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 18:38:35,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504770913] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:38:35,967 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:38:35,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 38 [2024-11-06 18:38:35,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67892646] [2024-11-06 18:38:35,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:38:35,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-06 18:38:35,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:38:35,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-06 18:38:35,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=1186, Unknown=0, NotChecked=0, Total=1406 [2024-11-06 18:38:35,968 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand has 38 states, 38 states have (on average 2.1842105263157894) internal successors, (83), 38 states have internal predecessors, (83), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-06 18:38:36,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:38:36,867 INFO L93 Difference]: Finished difference Result 102 states and 109 transitions. [2024-11-06 18:38:36,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-06 18:38:36,867 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.1842105263157894) internal successors, (83), 38 states have internal predecessors, (83), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 40 [2024-11-06 18:38:36,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:38:36,868 INFO L225 Difference]: With dead ends: 102 [2024-11-06 18:38:36,868 INFO L226 Difference]: Without dead ends: 100 [2024-11-06 18:38:36,869 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 919 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=615, Invalid=3045, Unknown=0, NotChecked=0, Total=3660 [2024-11-06 18:38:36,869 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 135 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-06 18:38:36,869 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 320 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-06 18:38:36,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-06 18:38:36,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 50. [2024-11-06 18:38:36,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 46 states have (on average 1.1304347826086956) internal successors, (52), 46 states have internal predecessors, (52), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-06 18:38:36,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 56 transitions. [2024-11-06 18:38:36,884 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 56 transitions. Word has length 40 [2024-11-06 18:38:36,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:38:36,884 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 56 transitions. [2024-11-06 18:38:36,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.1842105263157894) internal successors, (83), 38 states have internal predecessors, (83), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-06 18:38:36,884 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 56 transitions. [2024-11-06 18:38:36,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-06 18:38:36,885 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:38:36,885 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:38:36,898 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 18:38:37,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:38:37,086 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:38:37,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:38:37,086 INFO L85 PathProgramCache]: Analyzing trace with hash 389739551, now seen corresponding path program 7 times [2024-11-06 18:38:37,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:38:37,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752011376] [2024-11-06 18:38:37,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:38:37,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:38:37,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:37,751 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:38:37,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:37,753 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-06 18:38:37,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:37,754 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 18:38:37,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:38:37,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752011376] [2024-11-06 18:38:37,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752011376] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:38:37,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677391274] [2024-11-06 18:38:37,754 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-06 18:38:37,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:38:37,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:38:37,757 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 18:38:37,758 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 18:38:37,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:37,831 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-06 18:38:37,833 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:38:37,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 31 [2024-11-06 18:38:37,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:38:37,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:38:37,998 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-06 18:38:37,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 67 [2024-11-06 18:38:38,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:38:38,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:38:38,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:38:38,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:38:38,131 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-06 18:38:38,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 91 treesize of output 103 [2024-11-06 18:38:38,918 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-06 18:38:38,918 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:38:39,358 INFO L349 Elim1Store]: treesize reduction 126, result has 17.6 percent of original size [2024-11-06 18:38:39,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 125 treesize of output 88 [2024-11-06 18:38:39,412 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 18:38:39,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677391274] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:38:39,412 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:38:39,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 20, 17] total 48 [2024-11-06 18:38:39,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945623648] [2024-11-06 18:38:39,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:38:39,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-06 18:38:39,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:38:39,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-06 18:38:39,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=397, Invalid=1859, Unknown=0, NotChecked=0, Total=2256 [2024-11-06 18:38:39,414 INFO L87 Difference]: Start difference. First operand 50 states and 56 transitions. Second operand has 48 states, 48 states have (on average 2.1041666666666665) internal successors, (101), 47 states have internal predecessors, (101), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:38:40,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:38:40,892 INFO L93 Difference]: Finished difference Result 163 states and 172 transitions. [2024-11-06 18:38:40,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-06 18:38:40,892 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.1041666666666665) internal successors, (101), 47 states have internal predecessors, (101), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 44 [2024-11-06 18:38:40,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:38:40,893 INFO L225 Difference]: With dead ends: 163 [2024-11-06 18:38:40,893 INFO L226 Difference]: Without dead ends: 161 [2024-11-06 18:38:40,896 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2317 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1406, Invalid=6250, Unknown=0, NotChecked=0, Total=7656 [2024-11-06 18:38:40,897 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 198 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-06 18:38:40,897 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 387 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 726 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-06 18:38:40,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-11-06 18:38:40,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 75. [2024-11-06 18:38:40,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 71 states have (on average 1.1126760563380282) internal successors, (79), 71 states have internal predecessors, (79), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-06 18:38:40,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 83 transitions. [2024-11-06 18:38:40,921 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 83 transitions. Word has length 44 [2024-11-06 18:38:40,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:38:40,921 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 83 transitions. [2024-11-06 18:38:40,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.1041666666666665) internal successors, (101), 47 states have internal predecessors, (101), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:38:40,922 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 83 transitions. [2024-11-06 18:38:40,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-06 18:38:40,922 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:38:40,922 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:38:40,935 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-06 18:38:41,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:38:41,124 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:38:41,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:38:41,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1664770773, now seen corresponding path program 8 times [2024-11-06 18:38:41,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:38:41,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722303196] [2024-11-06 18:38:41,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:38:41,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:38:41,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:41,297 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:38:41,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:41,299 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-06 18:38:41,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:41,300 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 51 proven. 30 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 18:38:41,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:38:41,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722303196] [2024-11-06 18:38:41,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722303196] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:38:41,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28910660] [2024-11-06 18:38:41,301 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 18:38:41,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:38:41,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:38:41,303 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:38:41,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-06 18:38:41,385 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 18:38:41,385 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:38:41,386 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-06 18:38:41,388 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:38:41,562 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 72 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 18:38:41,562 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:38:41,680 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 72 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 18:38:41,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28910660] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:38:41,680 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:38:41,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 23 [2024-11-06 18:38:41,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918315426] [2024-11-06 18:38:41,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:38:41,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-06 18:38:41,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:38:41,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-06 18:38:41,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=368, Unknown=0, NotChecked=0, Total=506 [2024-11-06 18:38:41,681 INFO L87 Difference]: Start difference. First operand 75 states and 83 transitions. Second operand has 23 states, 23 states have (on average 3.260869565217391) internal successors, (75), 23 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-06 18:38:41,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:38:41,822 INFO L93 Difference]: Finished difference Result 123 states and 131 transitions. [2024-11-06 18:38:41,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-06 18:38:41,823 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.260869565217391) internal successors, (75), 23 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 48 [2024-11-06 18:38:41,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:38:41,823 INFO L225 Difference]: With dead ends: 123 [2024-11-06 18:38:41,823 INFO L226 Difference]: Without dead ends: 91 [2024-11-06 18:38:41,824 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 81 SyntacticMatches, 10 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=171, Invalid=479, Unknown=0, NotChecked=0, Total=650 [2024-11-06 18:38:41,824 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 31 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:38:41,824 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 202 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:38:41,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-06 18:38:41,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 75. [2024-11-06 18:38:41,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 71 states have (on average 1.0985915492957747) internal successors, (78), 71 states have internal predecessors, (78), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-06 18:38:41,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 82 transitions. [2024-11-06 18:38:41,849 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 82 transitions. Word has length 48 [2024-11-06 18:38:41,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:38:41,849 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 82 transitions. [2024-11-06 18:38:41,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.260869565217391) internal successors, (75), 23 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-06 18:38:41,849 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 82 transitions. [2024-11-06 18:38:41,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-06 18:38:41,851 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:38:41,851 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 5, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:38:41,871 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-06 18:38:42,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:38:42,051 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:38:42,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:38:42,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1255578655, now seen corresponding path program 9 times [2024-11-06 18:38:42,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:38:42,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874044325] [2024-11-06 18:38:42,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:38:42,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:38:42,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:42,716 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:38:42,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:42,717 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-06 18:38:42,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:42,719 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 1 proven. 80 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 18:38:42,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:38:42,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874044325] [2024-11-06 18:38:42,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874044325] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:38:42,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100036155] [2024-11-06 18:38:42,720 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-06 18:38:42,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:38:42,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:38:42,722 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:38:42,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-06 18:38:42,920 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-06 18:38:42,920 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:38:42,922 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-06 18:38:42,925 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:38:43,038 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 34 [2024-11-06 18:38:43,127 INFO L349 Elim1Store]: treesize reduction 136, result has 13.9 percent of original size [2024-11-06 18:38:43,128 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 3 case distinctions, treesize of input 77 treesize of output 83 [2024-11-06 18:38:43,266 INFO L349 Elim1Store]: treesize reduction 327, result has 12.8 percent of original size [2024-11-06 18:38:43,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 120 treesize of output 132 [2024-11-06 18:38:44,191 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 1 proven. 80 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 18:38:44,191 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:38:44,793 INFO L349 Elim1Store]: treesize reduction 156, result has 16.6 percent of original size [2024-11-06 18:38:44,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 129 treesize of output 94 [2024-11-06 18:38:45,021 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 6 proven. 75 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 18:38:45,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100036155] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:38:45,021 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:38:45,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 18] total 48 [2024-11-06 18:38:45,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888162464] [2024-11-06 18:38:45,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:38:45,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-06 18:38:45,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:38:45,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-06 18:38:45,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=2018, Unknown=0, NotChecked=0, Total=2256 [2024-11-06 18:38:45,023 INFO L87 Difference]: Start difference. First operand 75 states and 82 transitions. Second operand has 48 states, 48 states have (on average 2.2916666666666665) internal successors, (110), 48 states have internal predecessors, (110), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-06 18:38:46,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:38:46,876 INFO L93 Difference]: Finished difference Result 136 states and 143 transitions. [2024-11-06 18:38:46,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-06 18:38:46,877 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.2916666666666665) internal successors, (110), 48 states have internal predecessors, (110), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 48 [2024-11-06 18:38:46,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:38:46,877 INFO L225 Difference]: With dead ends: 136 [2024-11-06 18:38:46,877 INFO L226 Difference]: Without dead ends: 134 [2024-11-06 18:38:46,879 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 68 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1149 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=568, Invalid=4402, Unknown=0, NotChecked=0, Total=4970 [2024-11-06 18:38:46,879 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 77 mSDsluCounter, 1021 mSDsCounter, 0 mSdLazyCounter, 1472 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 1072 SdHoareTripleChecker+Invalid, 1493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-06 18:38:46,879 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 1072 Invalid, 1493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1472 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-06 18:38:46,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-11-06 18:38:46,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 56. [2024-11-06 18:38:46,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-06 18:38:46,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 62 transitions. [2024-11-06 18:38:46,897 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 62 transitions. Word has length 48 [2024-11-06 18:38:46,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:38:46,898 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 62 transitions. [2024-11-06 18:38:46,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.2916666666666665) internal successors, (110), 48 states have internal predecessors, (110), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-06 18:38:46,898 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 62 transitions. [2024-11-06 18:38:46,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-06 18:38:46,898 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:38:46,899 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:38:46,915 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-06 18:38:47,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-06 18:38:47,099 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:38:47,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:38:47,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1648208269, now seen corresponding path program 10 times [2024-11-06 18:38:47,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:38:47,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838860349] [2024-11-06 18:38:47,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:38:47,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:38:47,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:47,926 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:38:47,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:47,928 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-06 18:38:47,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:47,929 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 18:38:47,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:38:47,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838860349] [2024-11-06 18:38:47,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838860349] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:38:47,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070591241] [2024-11-06 18:38:47,930 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-06 18:38:47,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:38:47,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:38:47,932 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:38:47,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-06 18:38:48,167 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-06 18:38:48,167 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:38:48,172 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-06 18:38:48,175 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:38:48,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 31 [2024-11-06 18:38:48,269 INFO L349 Elim1Store]: treesize reduction 48, result has 28.4 percent of original size [2024-11-06 18:38:48,269 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 3 case distinctions, treesize of input 61 treesize of output 67 [2024-11-06 18:38:48,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:38:48,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:38:48,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:38:48,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:38:48,363 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-06 18:38:48,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 91 treesize of output 103 [2024-11-06 18:38:49,209 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 18:38:49,209 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:38:49,684 INFO L349 Elim1Store]: treesize reduction 30, result has 38.8 percent of original size [2024-11-06 18:38:49,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 115 treesize of output 75 [2024-11-06 18:38:49,783 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 18:38:49,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070591241] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:38:49,783 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:38:49,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 19] total 49 [2024-11-06 18:38:49,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87703349] [2024-11-06 18:38:49,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:38:49,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-06 18:38:49,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:38:49,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-06 18:38:49,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=346, Invalid=2006, Unknown=0, NotChecked=0, Total=2352 [2024-11-06 18:38:49,785 INFO L87 Difference]: Start difference. First operand 56 states and 62 transitions. Second operand has 49 states, 49 states have (on average 2.306122448979592) internal successors, (113), 49 states have internal predecessors, (113), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-06 18:38:51,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:38:51,500 INFO L93 Difference]: Finished difference Result 153 states and 162 transitions. [2024-11-06 18:38:51,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-06 18:38:51,501 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.306122448979592) internal successors, (113), 49 states have internal predecessors, (113), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 50 [2024-11-06 18:38:51,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:38:51,502 INFO L225 Difference]: With dead ends: 153 [2024-11-06 18:38:51,502 INFO L226 Difference]: Without dead ends: 151 [2024-11-06 18:38:51,503 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 72 SyntacticMatches, 2 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1785 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1042, Invalid=5600, Unknown=0, NotChecked=0, Total=6642 [2024-11-06 18:38:51,504 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 199 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-06 18:38:51,504 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 481 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-06 18:38:51,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2024-11-06 18:38:51,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 87. [2024-11-06 18:38:51,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 83 states have (on average 1.108433734939759) internal successors, (92), 83 states have internal predecessors, (92), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-06 18:38:51,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 96 transitions. [2024-11-06 18:38:51,537 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 96 transitions. Word has length 50 [2024-11-06 18:38:51,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:38:51,538 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 96 transitions. [2024-11-06 18:38:51,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.306122448979592) internal successors, (113), 49 states have internal predecessors, (113), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-06 18:38:51,538 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 96 transitions. [2024-11-06 18:38:51,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-06 18:38:51,539 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:38:51,539 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:38:51,557 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-06 18:38:51,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-06 18:38:51,743 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:38:51,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:38:51,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1210025175, now seen corresponding path program 11 times [2024-11-06 18:38:51,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:38:51,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295511424] [2024-11-06 18:38:51,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:38:51,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:38:51,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:52,561 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:38:52,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:52,563 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-06 18:38:52,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:52,565 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 18:38:52,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:38:52,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295511424] [2024-11-06 18:38:52,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295511424] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:38:52,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96058382] [2024-11-06 18:38:52,565 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-06 18:38:52,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:38:52,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:38:52,568 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:38:52,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-06 18:38:52,697 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-11-06 18:38:52,697 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:38:52,699 INFO L255 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-06 18:38:52,701 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:38:52,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 31 [2024-11-06 18:38:52,782 INFO L349 Elim1Store]: treesize reduction 48, result has 28.4 percent of original size [2024-11-06 18:38:52,782 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 3 case distinctions, treesize of input 61 treesize of output 67 [2024-11-06 18:38:52,894 INFO L349 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2024-11-06 18:38:52,895 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 91 treesize of output 103 [2024-11-06 18:38:53,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:38:53,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:38:53,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:38:53,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:38:53,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:38:53,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:38:53,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:38:53,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:38:53,037 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-06 18:38:53,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 28 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 121 treesize of output 139 [2024-11-06 18:38:54,278 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 18:38:54,278 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:38:55,011 INFO L349 Elim1Store]: treesize reduction 40, result has 38.5 percent of original size [2024-11-06 18:38:55,011 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 149 treesize of output 97 [2024-11-06 18:38:55,065 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 18:38:55,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96058382] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:38:55,066 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:38:55,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 22, 22] total 57 [2024-11-06 18:38:55,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754813199] [2024-11-06 18:38:55,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:38:55,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-11-06 18:38:55,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:38:55,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-11-06 18:38:55,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=444, Invalid=2748, Unknown=0, NotChecked=0, Total=3192 [2024-11-06 18:38:55,068 INFO L87 Difference]: Start difference. First operand 87 states and 96 transitions. Second operand has 57 states, 57 states have (on average 2.2280701754385963) internal successors, (127), 57 states have internal predecessors, (127), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-06 18:38:57,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:38:57,233 INFO L93 Difference]: Finished difference Result 161 states and 170 transitions. [2024-11-06 18:38:57,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-11-06 18:38:57,234 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.2280701754385963) internal successors, (127), 57 states have internal predecessors, (127), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 54 [2024-11-06 18:38:57,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:38:57,235 INFO L225 Difference]: With dead ends: 161 [2024-11-06 18:38:57,235 INFO L226 Difference]: Without dead ends: 159 [2024-11-06 18:38:57,237 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 74 SyntacticMatches, 2 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2302 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1292, Invalid=7080, Unknown=0, NotChecked=0, Total=8372 [2024-11-06 18:38:57,237 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 222 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 1097 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 1163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-06 18:38:57,237 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 670 Invalid, 1163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1097 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-06 18:38:57,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-11-06 18:38:57,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 91. [2024-11-06 18:38:57,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 87 states have (on average 1.103448275862069) internal successors, (96), 87 states have internal predecessors, (96), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-06 18:38:57,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2024-11-06 18:38:57,268 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 54 [2024-11-06 18:38:57,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:38:57,268 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions. [2024-11-06 18:38:57,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 2.2280701754385963) internal successors, (127), 57 states have internal predecessors, (127), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-06 18:38:57,268 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions. [2024-11-06 18:38:57,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-06 18:38:57,269 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:38:57,269 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 6, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:38:57,283 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-06 18:38:57,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:38:57,469 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:38:57,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:38:57,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1995434443, now seen corresponding path program 12 times [2024-11-06 18:38:57,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:38:57,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823513242] [2024-11-06 18:38:57,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:38:57,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:38:57,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:58,090 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:38:58,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:58,092 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-06 18:38:58,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:38:58,094 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 1 proven. 113 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 18:38:58,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:38:58,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823513242] [2024-11-06 18:38:58,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823513242] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:38:58,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353673316] [2024-11-06 18:38:58,094 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-06 18:38:58,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:38:58,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:38:58,097 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:38:58,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-06 18:38:58,432 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-06 18:38:58,432 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:38:58,435 INFO L255 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-06 18:38:58,437 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:38:58,490 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 31 [2024-11-06 18:38:58,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:38:58,563 INFO L349 Elim1Store]: treesize reduction 106, result has 15.2 percent of original size [2024-11-06 18:38:58,564 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 3 case distinctions, treesize of input 71 treesize of output 77 [2024-11-06 18:38:58,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:38:58,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:38:58,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:38:58,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:38:58,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:38:58,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:38:58,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:38:58,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:38:58,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:38:58,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:38:58,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:38:58,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:38:58,671 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-06 18:38:58,671 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 111 treesize of output 123 [2024-11-06 18:38:59,916 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 1 proven. 113 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 18:38:59,916 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:39:00,405 INFO L349 Elim1Store]: treesize reduction 156, result has 16.6 percent of original size [2024-11-06 18:39:00,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 129 treesize of output 94 [2024-11-06 18:39:00,607 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 6 proven. 108 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 18:39:00,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353673316] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:39:00,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:39:00,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20, 20] total 47 [2024-11-06 18:39:00,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677951216] [2024-11-06 18:39:00,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:39:00,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-06 18:39:00,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:39:00,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-06 18:39:00,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=1863, Unknown=0, NotChecked=0, Total=2162 [2024-11-06 18:39:00,609 INFO L87 Difference]: Start difference. First operand 91 states and 100 transitions. Second operand has 47 states, 47 states have (on average 2.4893617021276597) internal successors, (117), 47 states have internal predecessors, (117), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-06 18:39:01,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:39:01,665 INFO L93 Difference]: Finished difference Result 168 states and 177 transitions. [2024-11-06 18:39:01,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-06 18:39:01,665 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.4893617021276597) internal successors, (117), 47 states have internal predecessors, (117), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 54 [2024-11-06 18:39:01,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:39:01,666 INFO L225 Difference]: With dead ends: 168 [2024-11-06 18:39:01,666 INFO L226 Difference]: Without dead ends: 166 [2024-11-06 18:39:01,667 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 83 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1005 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=415, Invalid=2891, Unknown=0, NotChecked=0, Total=3306 [2024-11-06 18:39:01,668 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 76 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 1270 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 919 SdHoareTripleChecker+Invalid, 1288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-06 18:39:01,668 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 919 Invalid, 1288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1270 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-06 18:39:01,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-11-06 18:39:01,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 68. [2024-11-06 18:39:01,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 64 states have (on average 1.125) internal successors, (72), 64 states have internal predecessors, (72), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-06 18:39:01,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 76 transitions. [2024-11-06 18:39:01,700 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 76 transitions. Word has length 54 [2024-11-06 18:39:01,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:39:01,700 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 76 transitions. [2024-11-06 18:39:01,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.4893617021276597) internal successors, (117), 47 states have internal predecessors, (117), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-06 18:39:01,701 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 76 transitions. [2024-11-06 18:39:01,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-06 18:39:01,701 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:39:01,701 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:39:01,717 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-06 18:39:01,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:39:01,902 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:39:01,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:39:01,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1739500321, now seen corresponding path program 13 times [2024-11-06 18:39:01,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:39:01,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278253323] [2024-11-06 18:39:01,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:39:01,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:39:01,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:39:02,108 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:39:02,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:39:02,111 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-06 18:39:02,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:39:02,112 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 99 proven. 45 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 18:39:02,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:39:02,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278253323] [2024-11-06 18:39:02,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278253323] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:39:02,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180338936] [2024-11-06 18:39:02,113 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-06 18:39:02,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:39:02,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:39:02,115 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:39:02,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-06 18:39:02,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:39:02,230 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-06 18:39:02,231 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:39:02,480 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 128 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 18:39:02,480 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:39:02,596 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 128 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 18:39:02,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180338936] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:39:02,596 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:39:02,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 28 [2024-11-06 18:39:02,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810642525] [2024-11-06 18:39:02,596 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:39:02,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-06 18:39:02,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:39:02,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-06 18:39:02,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=553, Unknown=0, NotChecked=0, Total=756 [2024-11-06 18:39:02,598 INFO L87 Difference]: Start difference. First operand 68 states and 76 transitions. Second operand has 28 states, 28 states have (on average 3.3214285714285716) internal successors, (93), 28 states have internal predecessors, (93), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-06 18:39:02,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:39:02,727 INFO L93 Difference]: Finished difference Result 128 states and 136 transitions. [2024-11-06 18:39:02,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-06 18:39:02,727 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.3214285714285716) internal successors, (93), 28 states have internal predecessors, (93), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 58 [2024-11-06 18:39:02,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:39:02,728 INFO L225 Difference]: With dead ends: 128 [2024-11-06 18:39:02,728 INFO L226 Difference]: Without dead ends: 88 [2024-11-06 18:39:02,729 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 96 SyntacticMatches, 13 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 502 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=253, Invalid=739, Unknown=0, NotChecked=0, Total=992 [2024-11-06 18:39:02,729 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 37 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:39:02,730 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 212 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:39:02,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-06 18:39:02,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 68. [2024-11-06 18:39:02,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 64 states have (on average 1.109375) internal successors, (71), 64 states have internal predecessors, (71), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-06 18:39:02,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 75 transitions. [2024-11-06 18:39:02,751 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 75 transitions. Word has length 58 [2024-11-06 18:39:02,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:39:02,752 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 75 transitions. [2024-11-06 18:39:02,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.3214285714285716) internal successors, (93), 28 states have internal predecessors, (93), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-06 18:39:02,752 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 75 transitions. [2024-11-06 18:39:02,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-06 18:39:02,752 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:39:02,752 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:39:02,764 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-06 18:39:02,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-06 18:39:02,953 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:39:02,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:39:02,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1863591171, now seen corresponding path program 14 times [2024-11-06 18:39:02,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:39:02,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316724039] [2024-11-06 18:39:02,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:39:02,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:39:02,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:39:03,779 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:39:03,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:39:03,781 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-06 18:39:03,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:39:03,782 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 18:39:03,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:39:03,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316724039] [2024-11-06 18:39:03,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316724039] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:39:03,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52937842] [2024-11-06 18:39:03,782 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 18:39:03,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:39:03,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:39:03,785 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:39:03,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-06 18:39:03,896 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 18:39:03,897 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:39:03,905 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-06 18:39:03,908 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:39:03,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 31 [2024-11-06 18:39:04,007 INFO L349 Elim1Store]: treesize reduction 48, result has 28.4 percent of original size [2024-11-06 18:39:04,007 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 3 case distinctions, treesize of input 61 treesize of output 67 [2024-11-06 18:39:04,104 INFO L349 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2024-11-06 18:39:04,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 91 treesize of output 103 [2024-11-06 18:39:04,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:04,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:04,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:04,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:04,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:04,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:04,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:04,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:04,229 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-06 18:39:04,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 28 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 121 treesize of output 139 [2024-11-06 18:39:05,494 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 18:39:05,494 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:39:06,276 INFO L349 Elim1Store]: treesize reduction 40, result has 38.5 percent of original size [2024-11-06 18:39:06,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 149 treesize of output 97 [2024-11-06 18:39:06,419 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 18:39:06,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [52937842] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:39:06,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:39:06,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 23, 23] total 60 [2024-11-06 18:39:06,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236852826] [2024-11-06 18:39:06,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:39:06,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-06 18:39:06,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:39:06,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-06 18:39:06,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=3073, Unknown=0, NotChecked=0, Total=3540 [2024-11-06 18:39:06,421 INFO L87 Difference]: Start difference. First operand 68 states and 75 transitions. Second operand has 60 states, 60 states have (on average 2.3833333333333333) internal successors, (143), 60 states have internal predecessors, (143), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-06 18:39:08,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:39:08,975 INFO L93 Difference]: Finished difference Result 187 states and 197 transitions. [2024-11-06 18:39:08,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-11-06 18:39:08,976 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.3833333333333333) internal successors, (143), 60 states have internal predecessors, (143), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 60 [2024-11-06 18:39:08,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:39:08,976 INFO L225 Difference]: With dead ends: 187 [2024-11-06 18:39:08,976 INFO L226 Difference]: Without dead ends: 185 [2024-11-06 18:39:08,977 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 84 SyntacticMatches, 3 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2606 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1383, Invalid=8319, Unknown=0, NotChecked=0, Total=9702 [2024-11-06 18:39:08,978 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 193 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 1156 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 1217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-06 18:39:08,978 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 719 Invalid, 1217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1156 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-06 18:39:08,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-11-06 18:39:09,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 107. [2024-11-06 18:39:09,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 103 states have (on average 1.1067961165048543) internal successors, (114), 103 states have internal predecessors, (114), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-06 18:39:09,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 118 transitions. [2024-11-06 18:39:09,016 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 118 transitions. Word has length 60 [2024-11-06 18:39:09,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:39:09,017 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 118 transitions. [2024-11-06 18:39:09,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 2.3833333333333333) internal successors, (143), 60 states have internal predecessors, (143), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-06 18:39:09,017 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 118 transitions. [2024-11-06 18:39:09,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-06 18:39:09,017 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:39:09,018 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 7, 6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:39:09,030 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-06 18:39:09,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-06 18:39:09,218 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:39:09,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:39:09,218 INFO L85 PathProgramCache]: Analyzing trace with hash -141523289, now seen corresponding path program 15 times [2024-11-06 18:39:09,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:39:09,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113580497] [2024-11-06 18:39:09,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:39:09,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:39:09,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:39:10,119 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:39:10,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:39:10,121 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-06 18:39:10,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:39:10,122 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 3 proven. 169 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 18:39:10,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:39:10,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113580497] [2024-11-06 18:39:10,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113580497] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:39:10,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890592219] [2024-11-06 18:39:10,123 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-06 18:39:10,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:39:10,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:39:10,125 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:39:10,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-06 18:39:10,471 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-06 18:39:10,471 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:39:10,473 INFO L255 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-06 18:39:10,475 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:39:10,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 31 [2024-11-06 18:39:10,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:10,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:10,727 INFO L349 Elim1Store]: treesize reduction 69, result has 21.6 percent of original size [2024-11-06 18:39:10,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 71 treesize of output 77 [2024-11-06 18:39:10,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:10,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:10,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:10,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:10,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:10,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:10,882 INFO L349 Elim1Store]: treesize reduction 171, result has 19.7 percent of original size [2024-11-06 18:39:10,882 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 111 treesize of output 123 [2024-11-06 18:39:11,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:11,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:11,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:11,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:11,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:11,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:11,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:11,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:11,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:11,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:11,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:11,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:11,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:11,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:11,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:11,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:11,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:11,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:11,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:11,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:11,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:11,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:11,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:11,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:11,085 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-06 18:39:11,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 28 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 151 treesize of output 169 [2024-11-06 18:39:19,076 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 4 proven. 168 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 18:39:19,076 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:39:20,067 INFO L349 Elim1Store]: treesize reduction 292, result has 12.3 percent of original size [2024-11-06 18:39:20,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 167 treesize of output 122 [2024-11-06 18:39:21,096 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 12 proven. 160 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 18:39:21,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890592219] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:39:21,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:39:21,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 26, 26] total 67 [2024-11-06 18:39:21,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117225755] [2024-11-06 18:39:21,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:39:21,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-11-06 18:39:21,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:39:21,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-11-06 18:39:21,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=440, Invalid=3981, Unknown=1, NotChecked=0, Total=4422 [2024-11-06 18:39:21,098 INFO L87 Difference]: Start difference. First operand 107 states and 118 transitions. Second operand has 67 states, 67 states have (on average 2.2238805970149254) internal successors, (149), 67 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-06 18:39:22,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-06 18:39:25,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:39:25,254 INFO L93 Difference]: Finished difference Result 194 states and 205 transitions. [2024-11-06 18:39:25,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-06 18:39:25,255 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 2.2238805970149254) internal successors, (149), 67 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 62 [2024-11-06 18:39:25,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:39:25,256 INFO L225 Difference]: With dead ends: 194 [2024-11-06 18:39:25,256 INFO L226 Difference]: Without dead ends: 192 [2024-11-06 18:39:25,257 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 83 SyntacticMatches, 2 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2410 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=875, Invalid=7866, Unknown=1, NotChecked=0, Total=8742 [2024-11-06 18:39:25,257 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 178 mSDsluCounter, 1444 mSDsCounter, 0 mSdLazyCounter, 2226 mSolverCounterSat, 50 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 1512 SdHoareTripleChecker+Invalid, 2277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 2226 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-06 18:39:25,257 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 1512 Invalid, 2277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 2226 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2024-11-06 18:39:25,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-11-06 18:39:25,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 107. [2024-11-06 18:39:25,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 103 states have (on average 1.0970873786407767) internal successors, (113), 103 states have internal predecessors, (113), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-06 18:39:25,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 117 transitions. [2024-11-06 18:39:25,306 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 117 transitions. Word has length 62 [2024-11-06 18:39:25,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:39:25,306 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 117 transitions. [2024-11-06 18:39:25,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 2.2238805970149254) internal successors, (149), 67 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-06 18:39:25,306 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 117 transitions. [2024-11-06 18:39:25,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-06 18:39:25,306 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:39:25,306 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:39:25,320 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-06 18:39:25,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-06 18:39:25,507 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:39:25,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:39:25,507 INFO L85 PathProgramCache]: Analyzing trace with hash 977316531, now seen corresponding path program 16 times [2024-11-06 18:39:25,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:39:25,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885691338] [2024-11-06 18:39:25,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:39:25,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:39:25,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:39:26,515 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:39:26,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:39:26,517 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-06 18:39:26,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:39:26,518 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 18:39:26,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:39:26,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885691338] [2024-11-06 18:39:26,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885691338] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:39:26,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979222981] [2024-11-06 18:39:26,519 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-06 18:39:26,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:39:26,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:39:26,522 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:39:26,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-06 18:39:26,791 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-06 18:39:26,791 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:39:26,793 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-06 18:39:26,795 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:39:26,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 31 [2024-11-06 18:39:26,886 INFO L349 Elim1Store]: treesize reduction 48, result has 28.4 percent of original size [2024-11-06 18:39:26,886 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 3 case distinctions, treesize of input 61 treesize of output 67 [2024-11-06 18:39:26,992 INFO L349 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2024-11-06 18:39:26,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 91 treesize of output 103 [2024-11-06 18:39:27,134 INFO L349 Elim1Store]: treesize reduction 128, result has 22.4 percent of original size [2024-11-06 18:39:27,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 19 case distinctions, treesize of input 121 treesize of output 139 [2024-11-06 18:39:27,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:27,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:27,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:27,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:27,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:27,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:27,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:27,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:27,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:27,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:27,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:27,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:27,308 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-06 18:39:27,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 45 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 151 treesize of output 175 [2024-11-06 18:39:29,078 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 18:39:29,078 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:39:30,121 INFO L349 Elim1Store]: treesize reduction 50, result has 38.3 percent of original size [2024-11-06 18:39:30,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 183 treesize of output 119 [2024-11-06 18:39:30,193 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 18:39:30,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979222981] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:39:30,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:39:30,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 25, 25] total 66 [2024-11-06 18:39:30,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813963135] [2024-11-06 18:39:30,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:39:30,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-11-06 18:39:30,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:39:30,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-11-06 18:39:30,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=554, Invalid=3736, Unknown=0, NotChecked=0, Total=4290 [2024-11-06 18:39:30,195 INFO L87 Difference]: Start difference. First operand 107 states and 117 transitions. Second operand has 66 states, 66 states have (on average 2.378787878787879) internal successors, (157), 66 states have internal predecessors, (157), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-06 18:39:33,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:39:33,491 INFO L93 Difference]: Finished difference Result 197 states and 207 transitions. [2024-11-06 18:39:33,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-11-06 18:39:33,491 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.378787878787879) internal successors, (157), 66 states have internal predecessors, (157), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 64 [2024-11-06 18:39:33,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:39:33,492 INFO L225 Difference]: With dead ends: 197 [2024-11-06 18:39:33,492 INFO L226 Difference]: Without dead ends: 195 [2024-11-06 18:39:33,493 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 87 SyntacticMatches, 4 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3186 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1679, Invalid=9877, Unknown=0, NotChecked=0, Total=11556 [2024-11-06 18:39:33,493 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 412 mSDsluCounter, 825 mSDsCounter, 0 mSdLazyCounter, 1557 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 1671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:39:33,494 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [412 Valid, 850 Invalid, 1671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1557 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-06 18:39:33,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-11-06 18:39:33,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 111. [2024-11-06 18:39:33,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 107 states have (on average 1.0934579439252337) internal successors, (117), 107 states have internal predecessors, (117), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-06 18:39:33,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 121 transitions. [2024-11-06 18:39:33,546 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 121 transitions. Word has length 64 [2024-11-06 18:39:33,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:39:33,546 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 121 transitions. [2024-11-06 18:39:33,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.378787878787879) internal successors, (157), 66 states have internal predecessors, (157), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-06 18:39:33,546 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 121 transitions. [2024-11-06 18:39:33,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-06 18:39:33,546 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:39:33,547 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 8, 7, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:39:33,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-06 18:39:33,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:39:33,747 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:39:33,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:39:33,748 INFO L85 PathProgramCache]: Analyzing trace with hash 569602397, now seen corresponding path program 17 times [2024-11-06 18:39:33,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:39:33,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430227269] [2024-11-06 18:39:33,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:39:33,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:39:33,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:39:34,517 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:39:34,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:39:34,518 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-06 18:39:34,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:39:34,519 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 1 proven. 197 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 18:39:34,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:39:34,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430227269] [2024-11-06 18:39:34,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430227269] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:39:34,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961771357] [2024-11-06 18:39:34,520 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-06 18:39:34,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:39:34,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:39:34,522 INFO L229 MonitoredProcess]: Starting monitored process 19 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 18:39:34,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-06 18:39:34,842 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-06 18:39:34,842 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:39:34,845 INFO L255 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-06 18:39:34,847 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:39:34,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 31 [2024-11-06 18:39:34,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:34,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:34,973 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-06 18:39:34,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 67 [2024-11-06 18:39:35,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:35,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:35,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:35,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:35,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:35,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:35,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:35,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:35,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:35,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:35,086 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-06 18:39:35,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 101 treesize of output 113 [2024-11-06 18:39:36,414 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 18:39:36,415 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:39:37,182 INFO L349 Elim1Store]: treesize reduction 138, result has 18.3 percent of original size [2024-11-06 18:39:37,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 131 treesize of output 95 [2024-11-06 18:39:37,484 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 6 proven. 192 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 18:39:37,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961771357] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:39:37,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:39:37,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 25, 25] total 60 [2024-11-06 18:39:37,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53603435] [2024-11-06 18:39:37,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:39:37,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-06 18:39:37,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:39:37,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-06 18:39:37,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=369, Invalid=3171, Unknown=0, NotChecked=0, Total=3540 [2024-11-06 18:39:37,486 INFO L87 Difference]: Start difference. First operand 111 states and 121 transitions. Second operand has 60 states, 60 states have (on average 2.4833333333333334) internal successors, (149), 60 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-06 18:39:39,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:39:39,769 INFO L93 Difference]: Finished difference Result 208 states and 219 transitions. [2024-11-06 18:39:39,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-06 18:39:39,769 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.4833333333333334) internal successors, (149), 60 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 66 [2024-11-06 18:39:39,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:39:39,770 INFO L225 Difference]: With dead ends: 208 [2024-11-06 18:39:39,770 INFO L226 Difference]: Without dead ends: 206 [2024-11-06 18:39:39,771 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1893 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=709, Invalid=7123, Unknown=0, NotChecked=0, Total=7832 [2024-11-06 18:39:39,772 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 215 mSDsluCounter, 1527 mSDsCounter, 0 mSdLazyCounter, 2437 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 1594 SdHoareTripleChecker+Invalid, 2494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-06 18:39:39,772 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 1594 Invalid, 2494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2437 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-06 18:39:39,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2024-11-06 18:39:39,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 80. [2024-11-06 18:39:39,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 76 states have (on average 1.118421052631579) internal successors, (85), 76 states have internal predecessors, (85), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-06 18:39:39,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 89 transitions. [2024-11-06 18:39:39,832 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 89 transitions. Word has length 66 [2024-11-06 18:39:39,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:39:39,832 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 89 transitions. [2024-11-06 18:39:39,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 2.4833333333333334) internal successors, (149), 60 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-06 18:39:39,832 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 89 transitions. [2024-11-06 18:39:39,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-06 18:39:39,833 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:39:39,833 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:39:39,846 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-06 18:39:40,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:39:40,033 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:39:40,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:39:40,034 INFO L85 PathProgramCache]: Analyzing trace with hash -2003128471, now seen corresponding path program 18 times [2024-11-06 18:39:40,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:39:40,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643094810] [2024-11-06 18:39:40,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:39:40,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:39:40,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:39:40,292 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:39:40,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:39:40,293 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-06 18:39:40,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:39:40,294 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 163 proven. 62 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 18:39:40,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:39:40,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643094810] [2024-11-06 18:39:40,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643094810] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:39:40,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787356871] [2024-11-06 18:39:40,295 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-06 18:39:40,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:39:40,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:39:40,297 INFO L229 MonitoredProcess]: Starting monitored process 20 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 18:39:40,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-06 18:39:40,675 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-06 18:39:40,675 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:39:40,677 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-06 18:39:40,678 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:39:40,933 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 200 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 18:39:40,933 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:39:41,090 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 200 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 18:39:41,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787356871] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:39:41,090 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:39:41,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 33 [2024-11-06 18:39:41,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572503893] [2024-11-06 18:39:41,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:39:41,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-06 18:39:41,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:39:41,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-06 18:39:41,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=775, Unknown=0, NotChecked=0, Total=1056 [2024-11-06 18:39:41,092 INFO L87 Difference]: Start difference. First operand 80 states and 89 transitions. Second operand has 33 states, 33 states have (on average 3.3636363636363638) internal successors, (111), 33 states have internal predecessors, (111), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-06 18:39:41,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:39:41,299 INFO L93 Difference]: Finished difference Result 152 states and 161 transitions. [2024-11-06 18:39:41,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-06 18:39:41,300 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.3636363636363638) internal successors, (111), 33 states have internal predecessors, (111), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 68 [2024-11-06 18:39:41,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:39:41,301 INFO L225 Difference]: With dead ends: 152 [2024-11-06 18:39:41,301 INFO L226 Difference]: Without dead ends: 104 [2024-11-06 18:39:41,301 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 111 SyntacticMatches, 16 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 727 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=351, Invalid=1055, Unknown=0, NotChecked=0, Total=1406 [2024-11-06 18:39:41,302 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 61 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:39:41,302 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 200 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:39:41,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-06 18:39:41,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 80. [2024-11-06 18:39:41,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 76 states have (on average 1.105263157894737) internal successors, (84), 76 states have internal predecessors, (84), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-06 18:39:41,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions. [2024-11-06 18:39:41,349 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 68 [2024-11-06 18:39:41,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:39:41,350 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 88 transitions. [2024-11-06 18:39:41,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.3636363636363638) internal successors, (111), 33 states have internal predecessors, (111), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-06 18:39:41,350 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions. [2024-11-06 18:39:41,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-06 18:39:41,350 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:39:41,350 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:39:41,366 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-06 18:39:41,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:39:41,551 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:39:41,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:39:41,551 INFO L85 PathProgramCache]: Analyzing trace with hash 823306247, now seen corresponding path program 19 times [2024-11-06 18:39:41,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:39:41,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879061053] [2024-11-06 18:39:41,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:39:41,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:39:41,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:39:42,569 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:39:42,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:39:42,570 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-06 18:39:42,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:39:42,572 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 236 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 18:39:42,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:39:42,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879061053] [2024-11-06 18:39:42,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879061053] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:39:42,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858007777] [2024-11-06 18:39:42,573 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-06 18:39:42,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:39:42,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:39:42,575 INFO L229 MonitoredProcess]: Starting monitored process 21 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 18:39:42,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-06 18:39:42,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:39:42,739 INFO L255 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-06 18:39:42,741 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:39:42,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 31 [2024-11-06 18:39:42,976 INFO L349 Elim1Store]: treesize reduction 48, result has 28.4 percent of original size [2024-11-06 18:39:42,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 67 [2024-11-06 18:39:43,105 INFO L349 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2024-11-06 18:39:43,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 91 treesize of output 103 [2024-11-06 18:39:43,281 INFO L349 Elim1Store]: treesize reduction 128, result has 22.4 percent of original size [2024-11-06 18:39:43,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 20 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 19 case distinctions, treesize of input 121 treesize of output 139 [2024-11-06 18:39:43,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:43,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:43,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:43,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:43,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:43,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:43,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:43,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:43,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:43,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:43,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:43,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 18:39:43,462 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-06 18:39:43,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 45 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 151 treesize of output 175 [2024-11-06 18:39:45,431 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 239 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-06 18:39:45,431 INFO L311 TraceCheckSpWp]: Computing backward predicates...